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CONTROLLER
, CONCEPTS
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1985 CO.TROLLER CONCEPTS
VOLUME I
Peripheral Concepts, Inc.
18003-G2 Skypark Circle
Irvine, California 92714
(714)250-9510
GD
1
1985 Peripheral Concepts, Incorporated. All Rights Reserved. Reproduction by any
means,electronic or mechanical, is strictly prohibited. Disclosure to other
parties, in whole or in part, other than Peripheral Concepts original subscriber or
client requires prior written permission. All information is believed to be reliable
but no guarantee is expressed or implied as to its accuracy and/or completeness.
Q
Peripheral Concepts
FOREWORD
The 1985 peripheral controller market has expanded into new areas, and
so has this year's edition of Controller Concepts. New sections
included this year cover SCSI Host Adapters and Imbedded controllers.
The Host Adapter market is certainly going through a metamorphosis. As
higher performance SCSI controllers and disk drives are coming of age,
Host Adapters are no longer restricted to a simple "hardware
conversion". By the end of next year, we will likely see a totally new
(and rapid growing) Host Adapter marketplace.
Imbedded controllers, or the use of controller chips in disk drives,
made their debut in 1985. A lot of changes will occur as this new
market begins to stru~ture itself. The development of new controller
chips. specifically designed for drive use will be one of its segments.
As these products become available, we will expand and structure
Controller Concepts in tune with changing market conditions.
c
We are grateful for the many suggestions we received concerning last
year's report (our first edition) and have incorporated most of them
in this year's report. As we neared completion, we realized that the
book had to be split into two volumes. Rather than splitting it by
"Low-end vs. High-end" or "Micro vs. Mini", we looked at all of the
suppliers and their product lines and essentially followed the same
division as the industry. Volume two contains coverage of the
DEC-Compatible, Multibus 1/11, VMEbus, and other minicomputer busses.
We have changed some of our forecasting categories this ye.r. For
example, SASI/SCSI is now forecasted by interface type (XSASI, Full
SCSI, etc.) rather than the "old" method of winchester, tape, and
multifunction. We have also added additional breakdowns of the
foreca~ts, specifically by drive ~nterface in the SCSI section( (i.e.,
forecasts of ST506/412, ESDI, SMD) and in the IBM-PC section (OEM vs.
Captive vs. IBM shipments).
Please give us a call if you have any suggestions, questions, or need
additional information. We can also provide "custom" reports or do
further investigation into a particular niche market.
Joe Jaworski
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Peripheral Concepts
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TABLE OF COITEITS
INTRODUCTION
How the Report is Organized ••••••••••••••••••••••••••••••• INTRO-l
A Guide to Interpreting the Numbers ••••••••••••••••••••••• INTRO-3
Market Trends ••••••••••••••••••••••••••••••••••••••••••••• INTRO-4
Total Revenue Forecasts • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • INTRO-7
Total Shipment Forecasts • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • INTRO-8
Revenue Share •••••••••••••••••••••••••••••••••••••••••••••• INTRO-9
THE SASI/SCSI INTERFACE
(
In t r n.d u c t ion •••••••••••••••••••••••••••••••••••••••••••••• SCSI-I
Historical Background ••••••••••••••••••••••••••••••••••••• SCSI-4
SASI vs SCSI • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • SCSI-5
Technical Background •••••••••••••••••••••••••••••••••••••• SCSI-7
A Changing Market ••••••••••••••••••••••••••••••••••••••••• SCSI-12
Product Definition •••••••••••••••••••••••••••••••••••••••• SCSI-16
Market Trends ••••••••••••••••••••••••••••••••••••••••••••• SCSI-17
Technology Trends ••••••••••••••••••••••••••••••••••••••••• SCSI-18
Key Assumptions ••••••••••••••••••••••••••••••••••••••••••• SCSI-22
Revenue Forecasts ••••••••••••••••••••••••••••••••••••••••• SCSI-23
Shipment Forecasts •••••••••••••••••••••••••••••••••••••••• SCSI-24
Revenues by Function •••••••••••••••••••••••••••••••••••••• SCSI-25
Revenues by Drive Interface ••••••••••••••••••••••••••••••• SCSI-25
THE IBM-PC/XT/AT HOST INTERFACE
Introduction •••••.••••••••...••••••••••.•••••••••••••••..• IBMPC-I
Historical Background •••••••••• ~ •••••••••••••••••••••••••• IBMPC-2
Product Evolution •••••••••••••••••••••••••••••••••••••
•• IBMPC-3
Speculation/Strategies •••••••••••••••••••••••••••••••••••• IBMPC-5
Market Overview ••••••••••••••••••••••••••••••••••••••••••• IBMPC-6
Product Definition •••••••••••••••••••••••••••••••••••••••• IBMPC-8
Market Trends ••••••••••••••••••••••••••••••••••••••••••••• IBMPC-9
Key Assumptions ••••••••••••••••••••••••••••••••••••••••••• IBMPC-12
Revenue Forecasts ••••••••••••••••••••••••••••••••••••••••• IBMPC-13
Shipment Forecasts •••••••••••••••••••••••••••••••••••••••• IBMPC-14
Revenues by Destination ••••••••••••••••••••••••••••••••••• IBHPC-15
SCSI HOST ADAPTERS
Introduction •••••••••••••••••••••••••••••••••••••••••••••• HOST-I
An Interim Market? •••••••••••••••••••••••••••••••••••••••• HOST-3
Levels of Support ••••••••••••••••••••••••••••••••••••••••• HOST-4
Product Definition •••••••••••••••••••••••••••••••••••••••• HOST-6
Market Trends ••••••••••••••••••••••••••••••••••••••••••••• HOST-7
@ Peripheral Concepts
tey Assumptions •••••••••••••••••••••••••••••••••••••••••••
Revenue Forecasts •••••••••••••••••••••••••••••••••••••••••
Shipment Forecasts ••••••••••••••••••••••••••••••••••••••••
Revenues by Interface •••••••••••••••••••••••••••••••••••••
HOST-9
HOST-IO
HOST-II
HOST-12
SEMICONDUCTOR CONTROLLERS
Introduction •••••••••..••.••••••••••.•.•.••.•..••••••••••• SEMI-I
Floppy Disk Controllers ••••••••••••••••••••••••••••••••••• SEMI-2
Winchester Controllers •••••••••••••••••••••••••••••••••••• SEMI-4
Single Chip vs Chip-Sets • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • SEMI-6
Tape Controllers •••••••••••••••••••••••••••••••••••••••••• SEMI-9
Product Definition •••••••••••••••••••••••••••••••••••••••• SEMI-IO
Market Trends ••••••••••••••••••••••••••••••••••••••••••••• SEMI-II
Key Assumptions ••••••••••••••••••••••••••••••••••••••••••• SEMI-I4
Revenue Forecasts ••••••••••••••••••••••••••••••••••••••••• SEMI-IS
Shipment Forecasts •••••••••••••••••••••••••••••••••••••••• SEMI-16
IMBED~ED
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CONTROLLERS
Introduction •••••••••••••••••••••••••••••••••••••••••• IMBEDDED-I
The Need For Imbedding •••••••••••••••••••••••••••••••• IMBEDDED-3
Market Structure Analysis ••••••••••••••••••••••••••••• IMBEDDED-6
Product Definition •••••••••••••••••••••••••••••••••• 1. IMBEDDED-8
Market Trends ••••••••••••••••••••••••••••••••••••••••• IMBEDDED-9
Key Assumptions ••••••••••••••••••••••••••••••••••••••• IMBEDDED-IO
Revenue Forecasts ••••••••••••••••••••••••••••••••••••• IMBEDDED-II
Shipment Forecasts •••••••••••••••••••••••••••••••••••• IMBEDDED-12
PRODUCT MATRIX
Introduction • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
SCSI • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
IBM-PC • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Host Adapters • • • • • • • • • • • • • • • • • • ••• • • • • • • • • • • • • • • • • • • • • •
LSI • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Manufacturers' Index • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
PRODUCTS-I
PRODUCTS-3
PRODUCTS-22
PRODUCTS-31
PRODUCTS-39
PRODUCTS-56
MANUFACTURERS' PROFILES • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • MAN-I
IBM, IBM-PC, PC/IT, and PC AT are trademarks of International Business Machines
Corporation.
NOVA is a trademark of Data General Corporation.
XSASI is a trademark of Adaptive Data Systems, Inc.
(
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Multibus, Multibus II are trademarks of Intel Corporation.
o
Peripheral Concepts
IRTKODUCTIOR
How the Report is Organized
Controller Concepts is partitioned by host interface. All controllers,
regardless of the type of peripherals they control (i.e.', Winchester,
Floppy, Tape, etc.) are grouped within a section by the type of
computer or host interface they support. Each chapter also presents
its data independently, so you can skip around or start at any chapter
without missing any pertinent information on the interface of
interest. The Total Forecast section contains a numerical and
analytical summary of all the chapters. Also included in this section
are the total market numbers from Controller Concepts Volume 2, which
contains Multibus, Multibus II, VMEbus, Qbus, Unibus, and other
minicpmputer controllers. In this way, the reader can get an idea of
the total controller market as well as the impact of the individual
markets listed in this volume.
.
The host interfaces covered in Controller Concepts (Vol 1) are:
SASI!SCSI-
These peripheral controllers are board-level products
which support the "older" SASI, ISASI, and SA1403
interfaces, as well as SCSI products adhering to
various levels of the SCSI specification developed by
the ANSI I3T9 subcommittee. Controller Concepts
partitions SCSI products into three types:
1) ISASI!SASI 2)Basic SCSI and 3) Full SCSI (This
partitioning method is described on page SCSI-6).
IBM-PC!IT!AT-
These peripheral controllers are board-level products
which support IBM!s line of personal computers. Since
IBM continues to buy controllers as an OEM, these
shipments are included along with other OEM purchases.
(
Host Adapters- These board-level products convert a computer specific
host interface (IBM-PC, Apple II, Multibus, VMEbus,
etc.) into a SASI!SCSI interface. Although host
adapters are not technically controllers, they are an
essential part of the integration of SCSI to many
computer systems. This chapter contains host adapters
for both microcomputer and minicomputer systems.
INTRO-l
(9 Peripheral Concepts
Semiconductor Controllers- These controllers consist of single-chip,
chip-sets, and support devices sold on an OEM basis for
developing peripheral controller board-level products.
Imbedded Controllers- This new chapter of Controller Concepts
addresses semiconductors products intended for use
within the peripheral and are typically sold directly
to the peripheral vendor for use in manufacturing
intelligent drives. Today's controller chips used on
board-level )roducts are also used for imbedding.
Forecasts for this section includes conventional and
unique controller chips used for this purpose.
Most sections are then further divided into the types of peripherals
that the controller supports:
C
Winchester-
Controller products supporting one or more winchester
or rigid disk drives of various form factors.
Floppy-
Controller products which support only floppy disk
interfaces of various capacities and form factors.
Tape-
Controller products which support 1/4 inch, 1/2 inch,
data cassette, or any other sequential access streaming
or start/stop tape drive.
Multifunction- Controller products which support more than one type of
peripheral such as Floppy/Winchester, Winchester/ Tape,
and Winchester/Floppy/Tape controllers.
Some sections have further breakdowns unique to that interface. These
breakdowns are described in the associated chapters.
There are also two other sections:
Product Matrix- A detailed list of all controller products in
production or scheduled for production by the first
quarter of 1986. The products are again grouped by
host interface.
Manufacturers' Profiles- A brief description of each supplier and the
product lines manufactured.
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INTRO-2
Peripheral Concepts
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A Guide to Interpreting the Numbers
To save time in analyzing revenue and shipment numbers, keep the
following points in mind:
Constant Dollars- All revenues are. listed in 1985 Dollars with no
discount rates applied.
Calendar Years- All revenues/shipments are reported in calendar years,
not fiscal years. Make appropriate adjustments to your
situation.
c
Manufacturers- All revenues/shipments represent products manufactured
by U.S. companies for world-wide consumption, regardless
of the physical location of the manufacturing facility.
Included are imports by overseas manufacturers intended
for U.S. consumption. In other words, the destination of
product is always the U.S.
Market Shares- All market share data is listed in revenues for
calendar year 1984.
,
Captive Products- Captive products·listed are those controllers used
in other products manufactured by the same supplier for
internal consumption. For example, a board-level
controller supplier who also manufactures subsystems, will
ship some of their board-level production "buried" in the
subsystems. Likewise, an OEM semiconductor supplier who
also sells board-level products will ship some devices
captively, or on their own board-level products •
•
.
~
!
INTRO-3
(9 Peripheral Concepts·
Market Trends
Peripheral Concepts estimates the total controller market/all"
categories to be:
REVE"NUES ($)
SHIPMENTS
1984
1985
1986
1987
1988
512.4M
581.9M
693.1M
826.3M
979.2M
12.1M
15.2M
18.6M
22.0M
26.1M
Revenues of the peripheral controller market are expected to produce a
compo~nd
annual growth of 17.6% from 1984 to 1988. From 1984 to 1985,
revenue growth was 13.6%, down significantly from the 1983-84 period.
The sluggish growth experienced in the computer industry certainly
affected the overall controller market growth, but their was also a
lag of 6-9 months before most suppliers experienced a downturn in new
~
and existing orders. With few exceptions, the second quarter of 1985
""
revealed the strongest decline. Flat growth is now occuring during the
third quarter, so it is likely that the worst is over.
A
mode~~te
recovery is expected during the second and third quarters
~
of 1986, with an estimated 19.1% annual growth rate from 1985 levels.
Year-to-year revenue growth is expected to stabilize within the 19.0%
to 19.5% range through 1987. Unit shipments are a different story. An
impressive 22.8% increase over 1984 levels are projected for 1985,
increasing to 36.4% annually by 1988. The main driving factor is the
introduction of many new semiconductor controller products. both in
OEM and imbedded controller segments. Compound unit growth rate for
o
INTRO-4
Peripheral Concepts
I
\.
the forecast period is estimated at 19.4% for chips, 29.6% for
board-level products. By 1989, total revenues for all controller
products will break the Billion Dollar mark.
The IBM-PC controller segment will account for 37.1% of all revenues
generated in 1985, or roughly $216.1 Million. The second strongest
market is expected to be semiconductors at 18.9%, with revenues of
$109.9 Million. In third place is the SASI/SCSI board-level market,
which will actually decline in overall revenue share from 1984 to
1985~
from 15.0% to 14.4%. The strong growth of IBM shipments and
semiconductors will account for SCSI's loss of share. But actual
;;.
revenues for this market will increase from $76.7 Million to $83.7
~
Million during this period.
The two .ignificant growth markets over the forecast (1984 to 1988)
are Host Adapters and SASI/SCSI controllers. Host Adapters will
experience a strong compound annual growth in revenues of 69.2%, but
the total market is relatively small; remaining below the $50 Million
mark in 1988. SASI/SCSI products will grow at.a compound rate of
•
20.8%, from 1984 revenues of $76.7 Million to 1988's projected $163.1
Million. Semiconductor peripheral controllers are becoming more of an
OEM product rather than mostly captive (shipped on board-level
controllers), as traditional microprocessor and merchant-market
suppliers introduced new products during 1985. There is also some
indication that the "build vs buy" decision is reverting back to a
"build" status (over the last three years, this market has seen many
OEMs 'specifying complete board products instead of purchasing
.
I
INTRO-5
@periPheral Concepts
controller chips). However, a strong shift from captive to OEM will
not occur until late 1986, when volume production and second-sources
(
are established for these new suppliers. The compound growth rate for
all semiconductors over the forecast period is expected to be 17.0%,
from $89.7 Million in 1984 to $168.1 Million in 1988. Approximately
62.6% of 1984's chip revenues came from shipments of floppy controller
devices. By 1988, only 51.7% of revenues will be derived from this
source, indicating almost a double growth rate for LSI winchester
controllers. Nevertheless, over 11 million floppy controller chips
will ship in 1985.
The imbedded controller market is a new segment for the industry. This
market, with virtually no shipments in 1984, is expected to increase
to 817,000 units by 1988. Reienues (which are on an "if-sold" basis,
since product is really shipped within a disk or tape drive) are
(
expected to be $33.2 Million by 1988, primarily coming from purchases
by drive manufacturers.
Finally, the markets covered in this volume (SASI/SCSI, IBM-PC, Host
Adapters, Semiconductor, and Imbedded)
will account for 70.3% of the
,
controller market in 1985, or $360.26 Million. the remaining 29.7%
($152.14 Million) is shared among the DEC-compatible, Multibus,
VMEbus, Data General NOVA, Perkin-Elmer, and Texas Instruments
minicomputer controller markets. And like most other markets in the
electronics industry, IBM will remain the largest customer in the
foreseeable future.
INTRO-6
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Peripheral Concepts
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188
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TOTAL CXlNTROU.EIIS -ALL CATPmRIES
IIEVEN\JE SUIIWIY
IEVEIIIJES BY PRODUCT TYPE ($000)
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lCruAL
>
POU:AST
~
1984
>
1985
1986
1987
1988
:984-88
CONTROlJ.ER TYPE:
WI/SCSI
I!M-PC
HOST ADAPTERS
SlHICO!IlJUcrOR [1]
CAGR:
REV(s()
(%)
lEV(n)
76,689
15.0
83,714
14.4 108,613
15.7 139,984
16.9 163,076
16.7
20.8%
36.8 216,170
37.1 234,5'P.l
33.8 255,350
30.9 279,900
28.6
10.4%
42,250
4.3
69.2%
18.6 168,055
17.2
17.0%
188,720
5,151
89,704
0
DGEDDED
0'l'BER [2]
'l"OTAL REVE!Ill!S ($000)
1.0
7,027
17.5 109,998
0.0
937'
(X)
1.2
IEV(Sl)
13,080
18.9 135,800
.2
3,425
(X)
1.9
lEV(n)
24,280
19.6 153,984
.5
12,910
(%)
2.9
1.6
REV(St)
(%)
33,lSO
3.4
152,141
29.7 164,086
28.2 197,569
28.5 239,840
29.0 292.716
29.9
17.8%
S512,405
100% $581.932
100% $693,057
100% $826,348
100% 5979,177
100%
17.6%
13.6%
AllNUAL GROWTH lATE
" 19.1X
19.2%
SOURCE:
18.5%
PERIPIIERAL CONCEPTS.
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aDd otber tliAicaaputll"
(Vol II).
INTRO-7
(9 Peripheral Concepts
p
..'.TOTAL COIrI'ROu.ERS -ALL CATPmRIBS
SIIIl'HI!II'1' SUIMAIY
<
ACl'UAL
1984
BO~
SllIPtIEIITS Bf PRODUCT TYPE (000)
>
<
>
PUBCAST
1985
1986
1987
1988
1~
CACR:
PROOOC'lSt
lIfITS(l)
SASI/SCSI
338.7
IIlM-PC
1,325.2
HOST ADAPTDS
OTHER [2J
18.9
404.8
74.0 1,625.5
(%) IIIII'I'S(I)
579.4
18.6
74.6 1,910.8
(%) IIIII'I'S{r)
(I)
UNITS{r)
(I)
834.2
24.4 1,107.5
26.1
34.5%
70.6 2,241.2
65.6 2,577.6
60.8
18.1%
21.4
22.4
1.3
29.4
1.3
64.2
2.4
141.2
4.1
295.4
7.0
90.6%
105.2
5.9
119.6
S.S
IS2.4
5.6
199.6
5.8
259.0
6.1
25.3%
100% 4,239.5
100%
24.0%
1,791.5
TOTAL SHIPtIEIITS (000)
(%) IIIIITS(r)
1001 2.179.3
100% 2.706.8
21.6%
AIOOIAL GIOImI RAT!
1001 3,416.2
24.2%
26.2%
24.1%
SEMICOIfDIX."l'OI PRODUC'1'S:
UIfITS(I)
CHIPS/CHIP
'--
sm
10,339.1
0.0
D!BEDDED
TOTAL SRIPtIEIITS (000)
10,339.1
e%) mrITS(I)
100.0 13,006.0
0.0
19.8
1001 13,025.8
(%) UNITS(I)
99.8 15,740.7
71.7
.2
100% 15,812.4
26.0%
ANHUAL GIOImI RAT!
(%)
IIIIITS(I) , (%) UNITS(I)
99.5 18,271.7
.5
290.9
100% 18,562.6
21.41
98.4 21,014.3
1.6
(%)
CACR:
96.3
19.4%
817.5
3.7
100% 21,831.8
100%
17.41
20.5%
17.6%
ALL PRODOCl'S:
tIII'l'S(I)
SEMICOtIDUCmI
BOARD-LE'IIL
TOTAL MAID'l' (000)
.ooru.u.
[lJ
(I)
UNITS(I)
(%)
CAGR:
as.7 15,812.4
as.4 18,562.6
84.5 21,831.8
83.7
20.5%
1,791.5
14.8 '2.179.3
14.3 2.706.8
14.6 3,416.2
15.5 4,239.5
16.3
24.0%
12,130.6
100% 15,205.1
100% 18,519.2
100% 21,978.8
100% 26,071.3
1001
21.1%
1lIfITS(1)
(%)
25.3%
ah1,..ate.
and other Min1ca.putara (Vol II).
INTRO-8
( ) Peripheral Concepts
21.8%
(%)
18.7%
SOURCE:
[21 IN1Ubas, DI!C-c:.,aUb1e, 'lMEbua,
(
(%) UNITS (I)
85.2 13,025.8
GROWTH RAT!
lfol1~pt1Ye
UNITS (I)
10,339.1
18.6%
PERIPHERAL CONC!PTS, life.
IIM-PC
(52.• 4\)
2D
I
IIJS'l' ADAPl'ERS
(1.4\)
SASI/SCSI
I
(21.3\)
1984 MIu:tcet &bare
'1'otal ReY8meez
$360.311
.(
o
t
IIM-PC
(40.8\)
10
"~------------~.r
DEI'DlED
1984-88 CAGRI
17.5\ .
(4.8\)
to
1988 MIu:tcet bre
$686. SM
'1'otal RevwlU88I
INTRO-9
@periPheral Concepts
THE SASI/SCSI IKTERFACE
Introduction
The SCSI (Small Computer Systems Interface) is an attempt to
standardize a generic, dedicated I/O (Input/Output) bus for small
systems.
The concept of the I/O bus is not new. Minicomputer and mainframe
manufacturers have been using I/O busses for at least ten years. The
most prominent example is the IBM I/O Channel, which is really where
SCSI got its start.
The need for I/O busses stems from the unique characteristics of
peripherals. Minicomputer and mainframe manufacturers, long-time users
of I/O busses, realized long ago that large peripherals (such as an
SMD disk drive or a reel-to-reel tape unit) have unique operating
requirements relative to the other CPU oriented system functions. The
internal host busses of these larser
computers were designed for use
,
by memory boards, DMA controllers, co-processors, etc. They did not
operate efficiently with the serial, sector block protocols of .
peripherals. The high-end manufacturer found that by creating a
separate I/O bus, based upon the requirements of these peripherals,
data transfers between computer and peripheral could be done more
efficiently. As an added bonus, future systems (which normally used an
advanced but incompatible CPU bus) could still use the same
-
peripherals as its previous model, saving development time. Even
SCSI-l
(9 Peripheral Concepts
today, the most costly and time consuming development phase of a new
l
computer design remains in peripheral support and efficient I/O
handling.
SCSI goes one step further than the older I/O bus designs. On larger
systems, the I/O bus was captive (i.e., the computer manufacturer
developed the bus for use only on their own machines). SCSI is an I/O
bus that is designed to be generic. That is, it operates in the same
manner independent of the type of computer or host connected to it.
Although SCSI certainly enjoys the benefits of I/O bus efficiencies,
~
this was not the motive for its creation.
SCSI was originally developed by peripheral and controller
manufacturers, not by anyone computer maker. Even in its early days,
(
the goal of SCSI was to ultimately use it as a disk drive bus. These
"intelligent" or SCSI bus peripherals would be sold directly to the
computer manufacturer on an OEM basis. However, this assumes that
computer manufacturers will adopt and implement SCSI, regardless of
the maka or model of computer. Such universal standards do exist
today, like the RS-232 interface. ~owever, so far, SCSI has not been
widely accepted by the major computer OEMs. Until it does, SCSI will
be limited to the systems integrator and the add-on market. But there
is "evaluation" activity occuring at many computer OEMs .including
Apple, AT&T, Data General, Datapoint, Digital Equipment, NCR, Sperry,
and Texas Instruments.
o
SCSI-2
Peripheral Concepts
1
i
I
!
!
I
k
,~
Obviously, many factors will determine the long-range success of SCSI.
Probably the most important is the availability of controller products
which meet the ANSI specification for SCSI. Odd as it may seem, the
t"
majority of products shipped today (called "ISASI" or "SASI") are not
SCSI at all. While it is true that these products represent a
detriment to the growth of SCSI, they are also the cause of
standardization efforts by ANSI and the industry.
Most controller
companies now have "SCSI-compliant" products available, which now
offer
~
better price/performance than the older ISASI/SASI
c·ontro11ers.
SCSI-3
(9 Peripheral Concepts
/
Historical Background
l
The original SCSI, called SASI (Shugart Associates Systems Int~rface)
was developed as a way to interface winchester disk drives (of varying
device-level interfaces) to computers. In a sense, SASI was intended
as a "cushion" to the rapid changes expected in winchester disk
technology. In particular, changes in data transfer rates.
In 1979, floppy disk manufacturer Shugart Associates, in conjunction
with controller manufacturer Data Technology Corporation, developed
the first SASI product. This effort was prompted by Shugart's entry
into the small winchester business. The interface requirements for
Shugart's new winchester drive, the model SA1000, could not be
satisfied by using the standard a-inch floppy interface (from a
c
technical standpoint), and the traditional SMD interface was
considered too costly. Follow-on products would also feature
significant increases in capacity (the original SA1000 offered five
megabytes, unformatted). A new interface was developed for the SA1000,
which was a modification of the existing a-inch .floppy protocol. Data
i
Technology had already developed an I/O channel interface similar to
SASI, and could manufacture controllers for use with the SAlOOO.
Without controllers, potential customers for the drive could not even
perform the simplest evaluation. Hence, the SASI interface was born. A
year later, the SAlOOO interface was slightly modified by Seagate
Technology to form the now popular ST506 interface.
(
o
SCSI-4
Peripheral Concepts
\
During 1980 and 1981, NCR Corporation had developed a proprietary I/O
interface called the Byte Serial Interface (BSI) for use on their next
generation machines. The BSI had many of the characteristics of SASI,
but of course, since the two interfaces were developed independently,
they were incompatible. NCR's desire to use an industry-standard
interface resulted in a joint effort with Shugart AssoCiates to
produce an enhanced version of SASI called SASI-B or SASI-II. To help
further promote the market for SASI, both Shugart and NCR brought the
SASI-B specification to the American National Standards Institute
(ANSI) for approval. ANSI formed the task group ANSC X3T9.2 to develop
the specification. The ANSC group wou1d not allow a vendors name in
the title of the document, and changed the title from SASI to SCSI
:(
(Small Computer Systems Interface). Many new additions, including a
general expansion of the spec (to include other devices besides
winchesters and floppies), were incorporated into the document.
SASI vs. SCSI
From 1980 through the early part of 1983, there were no single chip
controllers available for SCSI, SA1000, or even ST506. As a result,
winchester controllers were implemented as add-on board-level
products. Consisting of semi-custom chip sets and off-the-shelf
devices, these controllers either mounted inside the computers'
chassis or on the drive itself. The most popular winchester controller
board_became Xebec Corporations's S1410, a SASI to ST506 controller
designed to mount on a 5 1/4 inch winchester drive. Many systems
SCSI-5
I
I
o
Peripheral Concepts
houses used the S1410 to evaluate and integrate their first
winchesters into new systems. Unfortunately, the S1410 implemented the
original SASI specifications with some minor differences in command
and status protocols. The controller product inherently became
non-compliant with the ANSC-revised SCSI specification.
These differences have caused the industry to split into two camps:
one being SI410-compatible, and the other being SCSI-compatible. The
Sl410-compatible controllers are called "ISASI" or SASI, while the
others use the SCSI name. Without a clear nomenclature- established,
many manufacturers are now referring to their ANSC-compatible SCSI
products as being "Basic-SCSI" or "Full-SCSI". Although these
descriptions are somewhat nebulous, "Full-SCSI" usually means that the
c
product implements the reconnect/disconnect and arbitration protocol
options in the SCSI spec. The "Basic-SCSI" products are compliant with
SCSI, but do not implement reconnect/disconnect or arbitration
options. Because of industry acceptance of these terms, forecasts and
trends in this chapter will be referenced by Basic SCSI, Full SCSI,
and ISASI/SASI.
The main difference between the older ISASI and the newer SCSI
controllers is that ISASI typically operates with only one controller
or device on the bus, while SCSI has the option to work with multiple
devices and/or multiple computers. The key word in the previous
sentence is "option". A manufacturer can correctly call a product
SCSI-compatible, even though it delivers the same (or even less)
performance than an older ISASI/SASI controller. Hence, the terms
(
o
SCSI-6
Peripheral Concepts
(
Basic SCSI and Full SCSI say little about the performance of a
particular product.
Because of the momentum of the installed base of XSASI controllers,
they. still represent a significant portion of 1984's shipments. But
things have changed. Many controller manufacturers have been working
on SCSI gate-array! semi-custom devices for the past 18 months. Many
or XSASI controller products.
Technical Background
The move from XSASI to SCSI is more than
~conomic.
The growing
popularity of SCSI can also be attributed to its "device
independence". There are basically two types of interfaces used on
storage devices, 1) device-level and 2) intelligent. Device-level
interfaces consist of many signal lines, each dedicated to perform a
single, somewhat primitive function. A controller is installed between
the computer and peripheral to convert the device-level signals to
SCSI-7
o
Peripheral Concepts
computer-compatible (serial) data and control. The controller must
apply different types of signals to these lines, sometimes in
sequence, to instruct the peripheral to perform a task. For example,
to instruct a disk drive to read a desired file, the controller must
first seek the head to the appropriate cylinder. This function alone
requires many separate electrical pulses. The controller must then
find the desired data within the current cylinder, extract the
applicable sectors which make up the file, check for errors (sometimes
correct them and/or retry), convert the serial data from the disk into
paralrel form, then give the data to the computer for further
processing.
It sounds complicated, and it is, but a device-level interface is
still the most cost-effective way to integrate a winchester disk drive
(
into a system. Some of the more popular device-level interfaces are
ST506/412, SMD, and most recently, ESDI. These types of winchester
drives are price competitive, multi-sourced', and available in a wide
variety of capacities and performance levels. But they all share two
major problems: 1) The computer must know where each sector of data is
located as well as how many there are, and
2) The controller must
know the electrical parameters (in great detail) of each signal line.
As winchester techn010gy continues to change, so will these
parameters. The computer OEM or system integrator cannot take
advantage of a new, higher performance disk drive without rewriting
software and/or changing the hardware when a more efficient
device-level interface is available. Similarly, the peripheral
o
SCSI-8
Peripheral Concepts
j
(.
manuf.cturer cannot offer better performance
o~
higher capacities in
the new drive under the constraints of the current interface. This
situation has probably been the biggest detriment to the introduction
of high capacity, high performance winchesters.
On the other hand, an "intelligent" interface such as SCSI, solves
these two problems. SCSI contains a standard set of commands, each
performing a complex function. In the above example, in order to read
a file via SCSI, the computer simply sends the address of the data and
issues a "Read" command to the SCSI bus. The SCSI controller (or
SCSI-based peripheral) finds ihe data and presents it on the bus,
ready to be received by the computer in parallel form. Aside from the
,
~
simplicity, the significant advantage here is that the computer
C'
specifies a "logical" block as an addresS of the data, rather than a
"physical" sector and cylinder location. Problem 1 above is solved:
the disk capacity and its organization of sectors/cylinders can change
with little or no impact on software.
Rather than being composed of individual signal lines, SCSI uses a
common 8-bit bus (with optional Parity) for data, commands, and
status. Problem 2 is solved: The data rate or functionality of
individual control lines can change without any effect on the SCSI
bus. In fact, the computer does not even know such a device-level bus
exists, since all communications are handled via the SCSI protocol.
Figure 1 illustrates the two popular ways that SCSI is used. Both
configurations use a "host adapter" or a computer-specific board which
(
SCSI-9
(9 Peripheral Concepts
l
converts the system's internal bus into an SCSI I/O bus. There are
also various levels of sophistication that a host adapter may employ
(see the section on host adapters for a detailed discussion). In
Figure 1. the bottom configuration shows an SCSI peripheral
communicating directly to the bus. while at the top, an SCSI add-on
controller (typically mounted on the disk drive) is shown between the
peripherals and the SCSI bus. These controllers can be considered
"protocol converters". converting the SCSI interface to a device-level
peripheral bus.
Intemal
1~lu _~_o_s_t_·~:I_Ad_Ho.ra=_~_r--,t--_SCS.;..;..;;.I--+~l~ I •
:
lc;j,·
I
!
I
Device-Level
(
Bus (STS06, SMD)
Comoul..
.
Ie
i
Intemal
Host
I .
Bus
ET
_10
i
U
!
I
Host
Adapter
SCSI
!rT'cedded
Cor!rOI,er
!
Figure 1.
Typical SCSI Implementations
The lack of SCSI peripherals, winchester or otherwise, keeps the
independent controller/peripheral configuration the most popular in
use today. Even as SCSI peripherals become widely available, separate
(
o
SCSI-lO
Peripheral Concepts
!t
controllers will continue to be popular. The .low cost of device-level
;
winchester drives, the ability to "mix and match" controller and
peripheral, the availability of multifunction controllers (i.e., tape
and winchester controller on a single board), and the higher level of
sophistication available in dedicated controllers will all contribute
to the long-term board-level controller market. In other words, at any
given point in time, it is likely that there will be a controller with
more performance/sophistication than can fit "imbedded" in the disk
drive. There will always be two co-existing applications: High
performance and low cost.
The cost of the host adapter keeps the SCSI system (host
adapter/controller/drive) at a price disadvantage when compared to
other alternatives such as a bus-specific controller. But that
additional cost buys expansion capability. As these systems truly
implement multiple peripherals on the SCSI bus (a situation that is
virtually non-existent today), the price of the host adapter can also
be amortized over the number of peripherals,
r~ducing
the total system
I
cost. But host adapters which support multiple peripherals (or
"targets" as the ANSC spec calls them) will require increased
functionality and hence, increased cost. Semiconductors for SCSI
become the critical path for the future success of this interface, as
these chips can be used in host adapter, drive, and controller.·
SCSI's multiple peripheral/multiple host capability is its most
attractive feature. As the office systems market continues to mature,
many new and older machines are being adapted for networking. SCSI is
SCSI-II
@periPheral Concepts
~~~--~-----~.-=-==~=-
-------~.-
...............
,
well suited for this application, either as a file server or a local
(
shared resource.
A Changing Market
As mentioned earlier, the cost of an SCSI system today is more
expensive than traditional alternatives. The price of the the host
adapter, controller, or SCSI peripheral is more costly than a
dedicated bus-specific controller coupled to a device-level winchester
disk drive. This alternative does not support the expansion
.
capabilities of SCSI, but in some applications, particularly a
single-user personal computer market, cost outweighs these expansion
benefits. Add-on board products available for these computers now
perform multiple functions, thereby preserving the available number of
C
slots for system expansion.
XSASI and host-specific controllers which feature multiple peripheral
support (winchester/tape, winchester/floppy, etc.) compete with SCSI
implementations in the single host/multiple peripheral configuration •
•
Many of these products perform peripheral-to-peripheral
communications
internally, keeping the bus free. Unfortunately, it is at this level
that most computer OEM's"and system integrators begin to see the
benefits of SCSI.
An SCSI floppy disk drive or an SCSI floppy controller has an
extremely limited market. Today's pricing of floppy disk drives and
LSI floppy controllers enable the computer OEM to integrate a floppy
(
o
SCSI-12
Peripheral Concepts
into the base system at very low cost (in some cases, for less than
$50). One must question the advantage of a second floppy disk drive on
the SCSI bus, even if supported by a multifunction controller. In
fact, the low recurring costs of a floppy controller/drive has made
this peripheral "standard" on all but the lower-end home machines, a
market that is clearly not SCSI territory.
SCSI peripherals, or those peripherals containing an imbedded SCSI
i
r
,I
i
controller, will compete with the SCSI controller board-level market.
But most peripheral manufacturers will initially purchase standard and
custom controller chips for integration into their drives, at least
until
in-h~use
controller
~xpertise
is developed. A controller company
which supplies both chips and board-level products can take advantage
of this new market. By 1988, over 30% of all winchester controller
chips will be sold via this channel. In the short term, many SCSI
buyers will continue to prefer separate controller and drive
procurement to retain maximum price and performance flexibility.
The majority of SCSI devices avaiiable today have been limited to
winchester and tape peripherals simply because it was these
manufacturers who were responsible for the development and promotion
of SCSI. Both the printer and communications market has not
experienced much interest. The popular Centronics-parallel and RS-232
interfaces are low in cost, supported by virtually all computer
manufacturers, and present stiff competition on a price-basis with
~.
SCSI. The communications market generally finds SCSI quite limited,
'f
particularly in terms of its data rate and contention protocol when
SCSI-13
@periPheral Concepts
_ _ _ _ _ _ _ _ _ _
.~
___
~_~~_~
___________________ o ___
~
_________________
~~_
compared with traditional data communications alternatives. Both these
(
markets will grow, but not until a major computer OEM chooses SCSI as
a "standard" port on the back of the system. There is much speculation
this year of such an event happening at IBM, Digital Equipment, AT&T,
and Apple. We believe Apple will be the first major user, followed
closely by AT&T. Don't expect too much activity before the second
quarter of '86. DEC's renewed interest in QBUS may have positive
connotations for SCSI, but not in the near term. In the case of IBM,
the use of a generic interface doesn't make sense. Despite strong
speculation, any company with the clout to set industry standards has
little to gain by adopting an interface used by its much smaller
competitors.
The "vendor unique" and "optional" commands in the SCSI specification
C
has caused many of today's products to be ·software-incompatible. There
are no guidelines or levels of SCSI supported in the ANSC
specification. The "mandatory" command
set~
which all devices must
recognize, is too limited to allow even the simplest firmware or host
adapter to support only those commands. The end result is the SCSI
designer must modify firmware and/or driver routines each time a
different vendors' product is qualified. This problem continues to
slow the growth of SCSI. A low cost, high-volume controller chip for
SCSI may stabilize these command choices in the future, but these
devices will probably be available from a variety of vendors with
slightly different command support, or simply allow any command to be
passed along the bus. Another possibility, and one that holds the most
(
o
SCSI-14
Peripheral Concepts
(
promise, may be a de facto solution. One manufacturer becomes a
dominant supplier of SCSI controllers, forcing all others to
manufacture command-compatible products. This would not be the first
(or last) time that an industry standard became established in this
way.
e
(
SCSI-IS
(9 Peripheral Concepts
Product Definition
Products and forecasts within this group refer to XSASI/SASI, Basic
SCSI (non-arbitrating) and Full SCSI (reconnect-disconnect)
board-level controllers of various form factors. These controllers
interface to a variety of peripherals including winchesters, tapes,
and floppies. During Calendar year 1984, there were 11 manufacturers
shipping 54 products. Examples of products and manufacturers in this
group are:
c
o
Adaptec, Inc.
ACB-4000
ACB-5500
Adaptive Data Systems, Inc.
PYTHON-II
COMBO-I
Data Technology Corporation
802C
510D
Emulex Corporation
MEDALIST MDOI
TITLEIST MT02
NCR Corporation
ADP-41-04
ADP-44-02
Scientific Micro Systems
FWD5001
5100
Sysgen Corporation.
SC3000
SI536
Western Digital Corporation
WDI002-SHD
WDI036R-SHD
Xebec Corporation
S1410A
S1420
SCSI-16
Peripheral Concepts
1
•
Market Trends
,
t
•
•I
Ii
I
t
Peripheral Concepts estimates the total SASI/SCSI market to be:
1984
REVENUES ($)
1985
1986
1987
1988
76,6891
83,7141
108,6131
139,9841
163,0761
338.71
404.81
579.41
834.21
1107.51
I
SHIPMENTS
Revenues for this market are expected to produce a compound annual
growth rate of 20.8% from 1984 through 1988. Revenues from 1984 to
1985 will experience a
gr~wth
of 9.2%,
whil~
shipments for the same
period will increase 19.5% from 338,600 to 404,700 units. The slower
short-term growth in the computer industry is partly responsible for
this near term slowdown, which is expected to recover during the
second half of 1986.
,
I
The shift from XSASI to SCSI is occuring ahead of our 1984
predictions. It is evident now that 17% of the ISASI business will
I
give way to SCSI before the end of 1985. A proliferation of
semiconductor products for SCSI (Both custom and semi-custom) will
allow Basic and Full SCSI controllers to compete on a price and
form factor basis with XSASI. Over the 5-year period from 1984 to
1988, XSASI/SASI will experience a negative compound annual. growth
rate of -26.0% in revenues.
Part o~ the SCSI controller board-level business is also shifting to
imbedded controllers and intelligent drives. This new market is almost
SCSI-17
(9 Peripheral Concepts
•
exclusively chips and chip-sets sold directly to peripheral vendors.
It is estimated that the SCSI board-level controller market will lose
(
12-15% share to imbedded controllers by 1986. However, a grow1rig need
"for higher performance controllers (especially in the Basic SCSI
configuration) will prevent this share from increasing substantially
in future years. The lower performance level SCSI controllers and SASI
type controllers will be the first markets to deteriorate, being
displaced by imbedded controllers.
Optical disk drives represent a prime candidate for SCSI, more so than
ESDI. The characteristics of optical data storage are different than
winchesters. SCSI can "hide" these differences from existing operating
systems and applications software. The first products will likely be
board-level controllers, particularly multifunction units capable of
Co
controlling both optical and winchester disk drives on the same board.
It is expected that by the end of 1986, major OEM commitments will
materialize for SCSI. This boost to the market will result in a
"second-wind" for SCSI, causing a much sharper growth rate towards the
end of 1986 and beyond. This
dema~d
should also diversify SCSI into
non-storage related products.
Technology Trends
The SCSI controller market has been primarily dominated by
winchester-only controllers, representing 73.3% of revenues, or $56.2
Million in 1984. Multifunction products accounted for only $13.5
(
o
SCSI-18
Peripheral Concepts
Million or 17.6% of 1984's market. We expect a definite shift to
.ult\Iunction controllers over the next several years, particularly in
the Tape/Winchester combination. The need for back-up of higher
capacity winchesters coupled with the wide acceptance of the QIC-36
tape interface will allow multifunction controllers to reach 27%
revenue share or $44.0 Million by 1988.
rhe QIC-02 interface, dominating tape-only and multifunction revenues
by 61.7% or $12.5 Million in 1984, will dwindle down to approximately
10.1% by 1988. The
~dup1ication"
highe~
price tag of QIC-02 drives as well as the
of intelligence in both the drive and controller, is
Jharp1y increasing the use of the QIC-36 tape interface in new
lpp1ications. By the end of
~986,
over half of all the
:ape/mu1tifunction controllers shipped (62.1%) will use the QIC-36
LnteC ace. The only event which could cause a contingency to QIC-36's
iominance, is the acceptance of the IBM 3480 tape cartridge for use in
microcomputer systems. We believe the 3480 will eventually penetrate
:his market, but not until late 1987-88, and will most likely utilize
:he SCSI interface rather than a
~he
"native~
environment
~uch
as QIC-36.
traditional ST506/412 controller, though not declining on an
lbsolute revenue basis, will make way for ESDI products. Less than .2%
~evenue
share in 1984, ESDI controllers will account for 19.6% of all
linchester controllers shipped in 1988, representing $19.8 Million in
~evenues.
The ST506/412 controller will still retain 80.2% revenue
Jhare in 1988, down slightly from the 93.9% share or $52.8 Million in
~984.
ESDI products will have the most effect on SMD winchester-only
(
SCSI-19
Q Peripheral Concepts
f
--------.~.
~--
..---"--------------------
controllers, declining from its 5.9% share in 1984 to less than .2% by
(
1988.
The Basic SCSI configuration will continue in a strong growth mode as
the need for Full SCSI is circumvented by the growth in multifunction
controllers. Likewise, new designs will continue to find the higher
performance, Basic SCSI controllers more than adequate to meet design
goals. Basic SCSI, which represents 34.9% of the 1984 market, will
grow to 52.0% by 1988. But by 1987, it is expected that Full SCSI will
begin to gain a foothold, capturing 25% of the 1988 marketplace.
Imbedded controllers and chips will present significant competition to
the overall SCSI board-level controller market. These drives will at
least be equal in price to discrete controller and drive purchases.
Likewise, the price differential between the older SASI controllers
~.
and most basic SCSI products will be less than 10% by the end of 1985.
Co~troller
products will have to rely on
hi~her
performance and
advanced functions to maintain market share. Basic SCSI interfaces
will be·available on many disk drives in the near future. But advanced
L
controller features such as caching, synchronous transfers, advanced
error" correction," file-serving, etc., will remain in the controller.
An often overlooked characteristic of SCSI is its performance range. A
computer system costing $2500 and one costing $25,000 can both use
SCSI effectively because of its wide range of performance options.
Personal computers, Supermicro's, low-end CAD/CAM, and engineering
workstations are all excellent markets for SCSI. Some limitations do
(
r
o
SCSI-20
Peripheral Concepts
, .--....- '... - ......-~-.N"IIIIIII.
LQic . . . . . .!'C"' ........ , . .
. . . -.. ....--.,..,....,.....
-~~~----.--.,....
...- -• ...,.-~-,-~.......~.. .- . - - - - - -........
=-~
,.~;--
. . ..--.
~
•
{
\.
exist at the very high-end of the market (i.e., Unibus and other
minicomputer interfaces) when SCSI is used in an emulating
environment. Performance degradation occurs when several levels of
protocol conversions have to be made from SCSI to the host bus.
The potential number of SCSI "sockets" has yet to influence the true
merchant semiconductor suppliers to develop dedicated silicon for
SCSI. In fact, microprocessor suppliers are just now beginning to ship
ST506/412 winchester controller chips, usually as part of their
microprocessor family of support devices. If the same were done for
SCSI, every microprocessor design would have the potential to contain
an SCSI port, and that would have
8
very positive impact on the size
of this market.
t..,
r
,
SCSI-21
(9 Peripheral Concepts
Key Assumptions
o
XSASI/SASI controllers will continue to lose market share to Basic
and Full SCSI products.
o
Major OEM commitments will be made towards SCSI in the second half
o£ 1986.
o
Multifunction controllers (Winchester/Tape) will gain significant
acceptance and boost the Basic SCSI configuration.
o
SCSI is a strong contender for optical disk drives, both in the
imbedded and board-level marketplace.
o
Higher performance Basic SCSI products will be adequate for most
applications, slowing the short-term growth of Full SCSI.
CALENDAR 1984 MARIET SHARES
REVENUES BY MANUFACTURER
Xebec Corporation
26.5%
Western Digital
18.0%
Adaptec, Inc.
13.8%
Scientific Micro ~ystems
13.6%
Data Technology Corporation
9.8%
Adaptive Data Systems
5.9%
Sysgen Corporation
4.4%
Other
8.0%
100.0%
o
SCSI-22
Peripheral Concepts
•
lID CAPTIVE
D
ITm
LiJJI
\..
211 .....••.......•.•••.•••.........•..•......•................•..................•.••...•..
~
~
N
CS)
181 ....•.......•....•••••••.••..••.••.....•.•.•••..•..•.•.....•....•.......•.•.••.....•..••
lSI
121
91
61
38
SASI/SCSI CONTROU.ERS
REVENUE StHtARY
<
<
ACJUAL
1984
CONTROLLER
->
----------->
REVENIJFS BY PRODUCT TYPE (SOOO)
FORECAST
1985
1987
1986
1988
1984-88
mE
CAGR:
REV(SK)
(I)
REV(SI)
(I)
REV($K)
(I)
REV($K)
(I)
REV($K)
(%)
XSASI/sASI
33,950
44.3
28,182
33.7
21,600
19.9
14,308
10.2
10,154
6.2
-26.0%
BASIC SCSI
26,790
34.9
34,920
41.7
54,OS3
49.8
75,179
53.7
84,866
52.0
33.4%
7,43';
9.7
11,164
13.3
18,536
17.1
30.114
21.5
40.820
25.0
53.1%
8.514
11. J
9,448
11 .3
14.394
13.3
20,383
14.6
27,236
16.7
33.7%
100% 5163,0;6
100%
20.8%
FIILl.
SCSI
CAPTIVE
WAf.
REVENUES (SOOO)
ANN\'Al.
GROWTH RATF.
$76.68CJ
.
·100% $83.714
100% $IOS,fiJ3
,100% 5139.984
9.2%
29.7%
28.9%
SOllRC'E:
16.5%
PERIPHERAL CONCEPTS. INC.
SCSI-23
@periPheral Concepts
am
mn
CAPTIVE
CJ
....................................................................................... .
1488
128& ....................................................................................... .
I
188e
(I)
...................................................................... . . . . .
1ioIoW~~
8ee
..•.•••.••.••••.•..••••.•.•..•...•....•.............•.
-""""'''''''''''''.~
ee .....................................0';;;;;;;;,",.'
4ee
6
288
SASI/SCSI CONTROLLERS
SHIP!'ID'T SUI'f1ARY
--------->
------->
SHIPML\'TS BY PRODUCT TYPE (000)
<
"-
AcroAL
FORECAST
<
1984
1987
1986
1985
1984-88
1988
CONTROLLER TYPE
C.~GR
UNITS(K)
(I)
UNITS(K}
(%)
UNITS(K)
(%)
UNITS(K)
(%)
UNITS(K)
(%)
XSASI/SASI
1"73.9
51.3
170.8
42.2
160.0
27.6
128.9
15.5
96.7
8.7
-13.6%
BASIC SCSI
114.2
33.7
165.5
40.9
298.8
51.6
494.6
59.3
684.4
61.8
56.5%
FULL SCSI
20.3
6.0
32.8
8.1
61.9
10.7
118.1
14.2
183.1
16.5
73.3%
CAPTIVE
30.3
8.9
35.7
8.8
58.7
10.1
92.6
11.1
143.3
12.9
47.5%
338.7
100%
404.8
100%
579.4
'100%
834.2
100%
1,107.5
100:;
3!..5%
TOTAL
SHIPME~TS
(000)
ANNUAL GROWTH RATE
19.5~
44.0%
43.1%
32.5~
141.Z~~
SOURCE:
SCSI-24
( ) Peripheral Concepts
f
:
PERIPHERAL CO:-'CEPTS, I'>r.
•
WI/SCSI CON'1'ROIJ.ERS
IIEV!HUE SlIMART
IIIIEUDOIIIC BT FUlfCTIOHAL TrP!
<
>
>
IEVEIIUES BT PRODUCT TIP! ($000)
<
AcroAL
FORBCAST
1985
1984
1987
1986
1988
1984-88
CACR:
COH'l'IOW!R TTP!
Winchester
Tape
Floppy
Multifunction
(I)
REV($I)
m(SI)
(I)
m{SI)
(I)
m{SI)
(I)
REV($I)
56,213
73.3
59,270
70.8
75,051
61.6
93,090
66.5 100,781
61.8
15.7%
6,749
8.8
8,120
. 9.7
12,056
9.9
16,518
n.8
18,264
n.2
28.3%
0
0.0
15.0
30,377
21.7
230
.3
84
.1
16,518
13,497
17.6
16,241
19.4
18,264
e
o·
44,030
(I)
0.0
27.0
34.4%
20.81
AHN'lIAL GROW'l'H RATE
9.2%
14.8%
45.6%
16.5%
IIEVJ!NUIS B1UWJIOWN BT DRIVE IM'l'ERFACE
INTIRFACI TTPB
(
Winchester OIalYI
REV(SI)
(%)
m(SI)
(%)
REVesI)
(I)
REV(St)
(%)
REV($I)
(%)
ST506/412
52,784
93.9
55,477
93.6
69,197
92.2
81,081
87.1
80.826
80.2
11.2%
112
.2
356
.6
3,377
4.5
10,333
11.1
19,753
19.6
264.4%
3,317
5.9
3,438
5.8
2.477
3.3
1,676
1.8
202
.2
1001 Sl00,781
100%
ESDI
SKI)
TOTAL R!V!lfU!S ($000)
$56,213
100% S59,271
5.4%\
AIOOlAL GROW'l'H RATE
Tape
OIalylMultifunctiODI REV(SI)
I(
26.6%
24.0%
15.7%
8.3%
(%)
lEVesI)
(%)
REVesI)
(%)
REV($I)
(%)
REV($I)
(%)
12,492
61.7
13,057
53.6
12,653
37.7
10,458
22.3
6,292
10.1
142.5%
QIC-36
7,.572
3~.4
11,206
46.0
20,842
62.1
36,390
77.6
56,003
89.9
318.8%
Pertee:
182
.9
97
.4
67
.2
47
.1
0
0.0
100% $62,295
100%
S2O,246
ANNUAL GROWTH RATE
!
1001 S93,09O
QIC-02
TOTAL R!V!lfU!S ($000)
I
1001 S75,051
1001 $24,360
1001 S33,562
20.3%
100% $46,895
37.81
39.7%
. ./_ 2C 4 "L-
32.4%
32.8%
\;. 7 2-S
SCSI-25
o
SOURCE: PERIPHERAL COHCEPTS, INC.
Peripheral Concepts
(
THB IBM PC/IT/AT IRTBIFACB
Introduction
When IBM first introduced its Personal Computer, many industry
observers doubted IBM's ability to penetrate an unfamiliar market. It
was questionable whether IBM could gain a strong foothold against the
established players such as Apple, Tandy, and Commodore. There are no
more doubts. No other company or product, in the history of the
computer industry, has started from zero and captured the majority of
.
market share as fast as IBM and their personal computer product has
done.
The minicomputer/mainframe-dominated office, especially the Fortune
500 corporations, thought little of personal computers before the
CIBM-PC.
These companies typically used two classes of machines. A
mainframe or high-end minicomputer, supplying processing power to a
limited number of users (mainly clerical and order entry), and
stand-alone dedicated word processing computers used within individual
departments for secretarial services. Other levels within the
organization, particularly the middle manager, had little or no access
to computers. IBM's personal computer not only legitimized this class
of machine as an office tool, but was marketed to fill this middle
manager void without affecting their strongest business: the mainframe
market. The recent introduction of the 3270 SNA adapters for the
IBM-PC further enforces the mainframe/personal computer synergy and
IBM's overall market strategy.
IBMPC-l
o
Peripheral Concepts
Recent estimates show that the IBM-PC and compatible machines now
account for 70% to 85% of all computers sold in the $2,000 to $5,000
price range. There are over 1,300 companies supplying add-on products
for these machines. There is more add-on hardware available for the
IBM-PC than all other computers combined. In terms of software, there
are over 2,500 applications programs available, taking second place
only to Apple Computer's "Apple II" series.
Historical Background
This phenomenal four-year growth was not achieved using standard IBM
methods. In 1981, IBM formed the Entry Systems Division in Boca Raton,
Florida, which became a dedicated, separate marketing and
manufacturing (or at least systems assembly) facility for the IBM
personal computer series. This concept is not new within IBM, as a
(
decentralizing strategy for new product lines has been a trend within
the company for the past several years. The.ESD group also operated
differently than other IBM facilities, particularly in terms of
procurement and material qualification.
Non-standard IBM methods are not solely responsible for the success of
their personal computer. Much of the initial software was obtained
from outside sources. The popular CP/M operating system was chosen for
the machine in its 16-bit'version, called CP/M-86. Also supplied was
another operating system called MSDOS, developed by Microsoft
Corporation (the IBM version is called PCDOS). The majority of third
(
o
IBMPC-2
Peripheral Concepts
l
~arty
applications software available today runs under PCDOS, as this
third party software played a major role in the success of the IBM-PC.
Likewise, the hardware of the machine was marketed as having an "open
architecture". The basic PC's five expansion slots and the IT's eight
expansion slots presented opportunity to new and existing add-on
suppliers, while at the same time, further insured the success of the
machine through third party suppliers. It was somewhat risky though,
developing a whole new bus specification instead of using an existing
standard, (S-100 was most dominant at the time). But IBM's willingness
. to make technical specifications available to the public far
outweighed this disadvantage.
There were also factors that put the new product at a disadvantage
C-elative to gaining acceptance. The IBM-PC is a very conservative
design. It did not offer any technological or superior features
compared to similar priced machines already on the market. In fact, on
a feature-by-feature basis, it was more expensive than any of its
competitors. But the IBM name, reputation for support, substantial
• service/distribution facilities,
advertising dollars, and established
were all part of a complex marketing strategy that transformed the
machine into an overnight success.
PRODUCT EVOLUTION
The entire IBM-PC continues to be purchased outside as sub-assemblies,
with only final test and assembly performed. We believe IBM will
(
IBMPC-3
CD
Peripheral Concepts
eventually take PC manufacturing captive to maintain market share,
reduce costs, and support future price reductions. From a management
standpoint, the company has already brought the ESD group back under
the corporate umbrella. This is a sure sign that IBM corporate views
the PC product line as a maturing business.
IBM is now building their own 5 1/4" winchester disk drives. Drives
for the AT model are being built in Rochester, Minnesota and XT drives
in Fujisawa, Japan. The company also has additional disk drive
manufacturing capability in Havant, England and Boulder, Colorado.
Producing the remaining printed circuit boards and associated hardware
is a relatively simple task when compared to disk drive manufacturing.
The company has secured second-source and/or manufacturing rights on
all custom and semi-custom components used within the PC from their
c
vendors.
Since the introduction of the original IBM-PC in 1981, many ditferent
versions were introduced. The current product line and their
memory/mass storage configurations are as follows:
•
IBM-PC: 64 Kilobytes or 256 Kilobytes
of RAM, No Floppy drive, or 1
single-sided drive, or two double-sided Floppy drives.
IBM-PC/XT: 128 Kilobytes or 256 Kilobytes of RAM, 1 double-sided
Floppy drive and 1 ten Megabyte Winchester drive.
IBM-PC/XT: 256 Kilobytes of RAM, 1 double-sided Floppy drive.
IBM-PC/XT: 256 Kilobytes of RAM, 2 double-sided Floppy drives.
IBM-PC Portable: 256 Kilobytes of RAM, 1 or 2 double-sided half-high
Floppy drives.
IBM-PCjr (Entry): 64 Kilobytes of RAM.
(
o
IBMPC-4
Peripheral Concepts.
--
-
-..
---------~-----~,---..-.
.
.~
-~--.
.-.......--~-.-----..
-.. '.-
.... ~~~
l
IBM-PCjr (Enhanced): 128 Kilobytes of RAM, 1 double-sided half-high
Floppy drive.
IBM-PC/AT (Base): 256 Kilobytes of RAM, 1 half-high 96 TPI Floppy
drive.
IBM-PC/AT (Enhanced): 512 Kilobytes of Ram, 1 half-high 96 TPI Floppy
drive and 1 twenty Megabyte Winchester drive.
Speculation/Strategies
The IBM-PCjr was discontinued early this year, as the company faced
difficulties in penetrating the home market. The much rumored "PC2"
machine, which was supposed to be introduced this year, has now been
officially "delayed" by the company. We believe downward pricing
pressures and the ever-narrowing performance differences between the
(
IT and AT models (caused primarily by sophisticated IT applications
software) was the cause of this move. It is also believed that many
potential buyers were in a "wait and see" position, impacting sales of
both IT and AT models. The PC2 was speculated to be positioned between
the IT
an~
AT in terms of capabilities, but it makes more sense for
the company to bridge the gap between the AT and the System 36. Such a
machine, expected to be introduced in late 1986, will likely use the
Intel 80386 32-Bit m1crprocessor.
Although all machines in the series have been designed to be
compatible, many applications programs are specific on the model of
machine that the package will run. Most incompatability problems occur
between PC's manufacturered by IBM versus "clones" or
(
IBMPC-5
(9 Peripheral Concepts
hardware/software compatible units. A ROM, present in all machines,
called the BIOS (Basic Input/Output System) is a key element which
ties the operating system to I/O devices. 100% compatibility can only
occur if this ROM is duplicated exactly within the "clone". Since this
level of duplication results in copyright infringement, no compatible
machine is fully IBM-PC compatible. The intent of the BIOS ROM was to
give the system a "generic" I/O driver capability, and it does. But
many applications programs bypass the standard entry points of the
BIOS for improved speed and performance, accessing internal BIOS
routines directly.
Market Overview
The total market for IBM-PC peripheral controllers is currently larger
(
than any other segment of the industry, generating over $188 Million
in revenues for calendar 1984. A significant portion of the market is
attributed to IBM purchases. The company buys 100% of their controller
needs from OEM suppliers. The two main suppliers, Xebec Corporation
for the XT program and Western
Digi~al
for the AT, represent over 80%
share of the 1984 market. If IBM takes PC manufacturing captive in the
future, these suppliers will still enjoy significant sales of custom
and semi-custom chips used on the products.
Most of the activity in OEM controller products continues to be the
conversion of PC to XT via after-market controller and drive. In the
case of the AT, every machine shipped by IBM, regardless if it comes
with a winchester disk drive or not, contains a winchester controller.
(
o
IBMPC-6
Peripheral Concepts
(
Adding a winchester drive and changing the driver ROM will activate
the rigid disk portion of this multifunction controller. Although
voiding the warranty, this is the most inexpensive way to upgrade a
floppy-only AT machine, and this is now occuring at some
dealer~distribution
points.
The after-market for AT winchester controllers is a questionable one.
The add-on controller will have to provide something unique that the
factory version does not provide, such as a higher performance
interf~ce
(i.e., ESDI or SMD) or greatly improved performance.
(
(
IBMPC-7
o
Peripheral Concepts
--
..
_------------
l
Product Definition
Products and forecasts within this category refer to board-level
controllers which plug directly into an IBM-PC, IT, or AT bus and
support a variety of storage peripherals. During calendar year 1984,
there were 8 OEM manufacturers shipping 32 different products.
Examples of products and manufacturers in this group are:
(
Adaptec, Inc.
ACB-2002A
ACB-2010A
Data Technology Corporation
5051
5091
Interphase Corporation
PC-BO
Scientific Micro Systems
5510
5710
Sigen Corporation
DC6
T-36
Western Digital Corporation
WDI002-WI2
WDI002-WA2
lebec Corporation
S1210A
S1220
I
o
IBMPC-8
Peripheral Concepts
...
_~v
__.. __ _ _ ..... -.,-~
~
----.-~~
......
~.-
-- -. __
~
--~
..
_~~~"".
___ ~___________ ."o_-'-c-,==="-".-.'OO-,--'.::"
(
·Market Trends
Peripheral Concepts estimates the total IBM-PC/IT/AT controller market
to be:
1984
REVENUES ($)
SHIPMENTS
1985
1986
1987
1988
l88.72M
216.17M
234.58M
255.34M
279.90M
1.33M
1.63M
1.9lM
2.24M
2.58M
Revenues for this market are expected to produce a compound annual
growth rate of 10.4% from 1984 through 1988, while shipments for the
same period will produce a compound annual growth of 18.1%. Heavy
price erosion in the winchester-only segment (averaging 8-12% annually
c
through 1988) will result in a slight decline in revenues, though unit
shipments will moderately increase. From 1984 to 1985, an annual
negative growth rate of -10.8% revenues, -2.9% units is expected.
Multifunction products show the strongest growth rate, with a compound
annual rate of revenues at 29.8% and a corresponding 37.9% in unit
shipments. Combination
Wincheste~/Tape
and new·multifunction
controllers, including those for optical disk drives, will be
responsible for this growth. Captive controllers, or those boards
shipped by controller manufacturers in subsystems, shows a large unit
growth of 71.3% compounded annually. But this market will remain
relatively small, as 1988 unit shipments will be slightly less than
49,000 units, with an "if-sold" value of $6.3 Million. Independent
(
IBMPC-9
o
Peripheral Concepts
subsystems manufacturers will continue to control the lion's share of
the subsystems market.
Clearly, IBM is the largest customer for these products. In 1984, IBM
accounted for over 81% of sales, or $153.25 Million. Heavy purchases
of AT'controller boards in calendar 1985 increased revenues to $172.5
Million, but IBM's absolute share of 1985's revenues declined slightly
by 1.4% to 79.8%, giving way to the rest of the OEM market which grew
18.3% from 1984 to 1985.
With one customer controlling such a large portion of the market, that
customer's buying habits will substantially affect and set the trends
for the remaining segments. We believe that IBM has "overbought" XT
and AT controller products in 1984-1985. Our estimates show that the
C company's
purchases for 1985 will be approximately 1,245,000
controllers. Optimistic projections for IBM computer shipments in the
IT and AT product lines have been reported
i~
the 700,000 to 800,000
range. We believe this excess inventory will be adjusted in 1986,
resulting in a -4.5% revenue decline, or $164.6 Million in revenues •
• will be in production, resulting
But by 1987, the successor to the AT
in a 1987 increase of 5.1% or $173.1 Million, just slightly higher
than the 1985 projection. Captive production of the original PC as
well as the XT will occur at this time, keeping overall revenue growth
at a modest increase.
The OEM or "non-IBM" market share will remain fairly constant over the
next several years. As IBM introduces new models to the PC line, the
(
IBMPC-10
( ) Peripheral Concepts
(_ !mand for after-market controllers will continue at a relative pace,
regardless if the new machines are backward-compatible or not. From
1985 through 1988, market shares will remain at an average 30% OEM!
70% IBM. The growth in "plug-and-play" or end-user installed
subsystems will fuel this growth, as OEM controller manufacturers
continue to ship product to the true add-on manufacturers.
(
(
IBMPC-11
o
Peripheral Concepts
Key Assumptions
l
o
IBM will continue to be the largest OEM customer, purchasing
approximately 70% of the industry's output.
o
Multifunction controllers will experience the strongest growth over
the next three years.
o
IBM has "overbought" IT/AT controllers in 1985, which will result
in a revenue decline during 1986 and early 1987.
o
The next generation machine in the PC product line will be
introduced in late 1986.
CALEIDAI 1984 HAllET SHARES
REVEIUES BY KAIUFACTUIEI
Xebec Corporation
52.8%
Western Digital Corporation
32.3%
Data Technology Corporation
11.2%
OTHER
3.7%
100.0%
(
o
IBMPC-12
Peripheral Concepts
• CAPTIUE
lSI ...•.•••....•....•....•...•.•......•...•........••.•......•......•....•.................
lee
•.......•.....•..•...•....•.•..•...........•....•••.•..........•.•......................
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.......................................................,.--...
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299············· ...... .
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108
S8
IlM-PC/lT/ AT CONTROLLERS
R!VENUE StHtARy
(
<
ACruAL
1984
R!VEHUES BY PRODUCT TYPE (MILLIONS)
>
<
>
FOREcAST
1985
1987
1986
1988
1984-88
CAGR:
CONTROLLER TYPE
Winchester
Multifunction/Tape
Captive
rorAL REVENUES ($K)
ANNUAL GROW'l1f RATE
REV($K)
(%)
REV(SH)
128.58
68.1
59.20
.94
$188.72
(%)
REV($K)
(%)
REV($K)
(%)
REV($K)
(%)
114.64
53.0
110.21
47.0
105.56
41.3
105.49
37.7
-4.8%
31.4
100,19
46.3
122.07
52.0
145.89
57.1
168.ll
60.1
29.8%
.S
1.34
.6
2.29
1.0
3.90
1.5
6.30
2.3
60.9%
100% $255.35
100% $279.90
100%
10.4%
8.5%
8.9%
9.6%
100% $216.17
I
100% $234.57
14.5%
SOURCE:
IBM-13
PERIPHERAL CONCEPTS, INC.
( ) Peripheral Concepts
H
%
·T
S
(I)
•
CAPTIVE
3se~
........................................................................................
388e
............ ".......................................................................... .
2~ee
..... .. .... .... .. .............. ... ... ... .. ...... .... .. ......... .... .. ...II1II---.
2eee ................................................ ......
l~ee
leee
~ee
IlIM-PC/lTI AT COH'l'ROIJ.ERS
SBIPHENT StnMARY
(
l\~~S
<
ACTUAL
1984
SHIPHENTS BY PRODUCT TYPE (IHLLf9NS)
>
<
>
FORECAST
1985
1986
1987
1988
t<:...
\L-
1984-88
CONTROLLER TYPE
Jl..(%) llNITS(M) (t) UNITS(~t (%)
UNITS(i>
UNITS(M)
CAGR:
(%)
UNITS (
<-------'-REVENUES BY DESTINATION ( $ 0 0 0 ) - - - - - -
<-------- FORECAST
AcroAL
1984
1985
->
1986
1988
1987
1984-88
CUST£IoIER TYPE
CAGR:
REV($[)
H
~
(%)
RBV($[)
(%)
REV($[)
(%)
REV($[)
(%)
REVU()
(%)
IBM
153,246
81.2
172,502
79.8
164,671
70.2
173,122
67.8
191,734
68.5
5.8%
om
34,540
18.3
42,327
19.6
67,613
28.8
78,327
30.7
81,863
29.2
24.1%
941
.5
1,339
.6
2,290
1.0
3,893
1.5
6,307
2.3
60.9%
100% $255,342
100% $279,904
100%
10.4%
8.5%
8.9%
9.6%
Captive
"d
()
I
.....
TUrAL REVENUES ($000)
$188.727
100% $216,168
100% $234,574
U1
ANNUAL GROW'I1I RATE
o
~
14.5%
SOURCE:
PERIPHERAL CONCEPTS, INC.
::!.
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SCSI BOST ADAPTERS
l
Introduction
The Small Computer Systems Interface (SCSI) is a general purpose,
input/output channel designed to be used on a wide variety of computer
,
systems. But being "general purpose" means that different makes and
models of computers must interface to SCSI via a specific piece of
hardware and software. That interface equipment is called a host
adapter.
The role of the host adapter has been a confusing one. Host adapters
for SCSI have been around as long
form of SASI and XSASI
a~
SCSI itself, specifically, in the
implementations~
These early models were used
to interface a SASI winchester controller to a host bus, and typically
(.~ame with some software to "patch" the computers' operating system or
install appropriate software driver routines. The hardware portion of
the adapter provided nothing more than an electrical conversion from
SASI to the host-specific bus.
As SASI has evolved to the higher performance SCSI, host adapters are
also evolving to playa more significant role in the performance of
the entire subsystem. ·In fact, SCSI does not seem to be limited to
"small systems". The 1.5 Megabyte/second transfer rate (4.0
Megabytes/sec. in synchronous mode) is more than adequate for today's
supermicros and some minicomputers. There are SCSI host adapters. now
available for the Qbus, Unibus, VMEbus, and soon, Multibus II.
(
HOST-l
o
Peripheral Concepts
. - -
l
---'
,-,%' •• ~
,J,',
.....
,,~~
•••••• _
••• " . _
• __
1. _ _ _ _ _ _ _ _....
_-'••••_ _ •__ _ _.........
• ......'f'2I1ii1.....
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t . . . . .·_ _ _ _._
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_
It is generally less expensive today to interface a bus-specific
.
controller and a device-level winchester disk drive to a popular_model
of computer, rather than using the SCSI bus via a host adapter and a
winchester controller. For example, some winchester disk controllers
for the IBM-PC currently sell for less than $200, approximately the
same price as some SCSI winchester controllers. When the cost of the
host adapter is added, the total system price is higher when using
SCSI. But the configuration that is achieved is nothing more than an
interface for a winchester disk drive. This is neither the goal of the
host adapter or the concept of SCSI.
A system that contains an SCSI host adapter will have access to more
than just winchesters. Other I/O devices such as communications
channels, printers, optical disks, graphics devices, etc., will soon
(~ ~
available with SCSI. The cost of the host adapter can then be
amortized over many peripherals. The host
~dapter
can also solve
another growing problem concerning those systems that are repackaged
with "value-added" to vertical markets. Additional memory cards and
I/O functions used by these systems often result in a shortage of
slots or backplane access. These systems can benefit from using an
SCSI host adapter by allowing multiple I/O capabilities through the
use of only one backplane slot. Additional benefits can also be
realized by minimizing software development; allowing the same I/O
driver routines to access a wide variety of peripherals.
(
HOST-2
Q Peripheral Concepts
(';'f!
market for host adapters has also been recognized by the
semiconductor suppliers. Several merchant-market chip suppliers have
recently added SCSI protocol devices to their product lines.
An Interim Market?
One of the most significant events that has happened in the SCSI
market over the past year is the introduction of SCSI-based
peripherals. Winchester disk and streaming tape suppliers are readying
new
stora~e
products which will have an SCSI interface directly on the
4rive. If these products are sold on an OEM basis to computer
manufacturers, then the computer makers will have to include an SCSI
port or I/O connector to support this method of connecting
peripherals. Such a scenario would eliminate the need for host
~~aPters,
as the OEM would be providing that function as part of every
system.
The widespread acceptance of SCSI by the major computer manufacturers
is an unlikely event. Although we believe that one or possibly two
suppliers of microcomputers will adopt SCSI in the near term, the
major player IBM, will not.
In the supermicro area,
th~
Mu1tibus interface is driven by a
flourishing add-on market from many, many suppliers. There are no
dominant market leaders as is the case of IBM in the microcomputer
segment. The
upcom~ng
Mu1tibus II and especially, the VMEbus will also
follow the same structure.
HOST-3
( ) Peripheral Concepts
..-
(
- - -..~-
~.,",,-,,~.
- --.",.'--.......
• . . . ~ .... .-,tI .-h; __
at· err we , .
ft.
'*t2#r
In the minicomputer area, Digital Equipment is the primary supplier,
but the hardware and software after-market for DEC systems is almost
as big as the DEC market itself. Although SCSI already exists for this
segment to a limited extent, it is unlikely that the SCSI host adapter
market will develop significantly for DEC-compatible systems. The
clearly defined Qbus and Unibus now enjoys a large variety of
dedicated peripherals, controllers, and I/O accessories. Significant
performance degradation occurs when SCSI is inserted in the chain
between the disk drive and a device emulating controller.
The emergence of SCSI-based peripherals will fuel the host adapter
~arket,
not supress it. This growth will also change the product mix
from lower performance host adapters to higher performance products.
C_~evels of Support
The level of support or amount of
intelligenc~/performance
that a host
adapter can provide varies over a wide range. The most basic types of
host adapters provide little more than an electrical conversion from
the host bus to the SCSI bus. But this lower level of support may be
adequate for many single-user systems tied to only one or two
peripherals. It is expected that these products will constitute a
smaller percentage of the future shipments of host adapters. As higher
performance SCSI controllers and disk drives enter production, higher
performance host adapters will quickly displace these products. Host
adapters which support multi-user or concurrent operations will be
those most likely to capture the majority of market share.
(
Q Peripheral Concepts
HOST-4
Host adapters which provide multi-tasking capabilities on single-user
<-!stems will enjoy a larger market than those for multi-user systems.
Even the low-end microcomputer systems, such as the IBM-PC, are being
aimed at low-end CAD/CAM and other applications requiring fast access
to mass storage. Although IBM-PC systems used in a less-specific
environment may see some host adapter activity, the use of SCSI on
these systems will be limited to the niche markets of system
integrators and value-added resellers. But the sheer size of the
IBM-PC market makes even this "niche" a substantial piece of business.
HOST-5
o
Peripheral Concepts
Product Definition
l
Products and forecasts within this group refer to board-level products
which adapt the SASI/SCSI interface to a variety of computer busses.
These products plug directly into the backplane slot of the host bus,
providing one or more SASI/SCSI ports for connection to internal and
external devices. Examples of products and manufacturers in this group
are:
(
Adaptive Data Systems, Inc.
PC-MASTER LINK
Data Technology Corporation
Model 10-1
Model 86-1
Emulex Corporation
UC03
UC13
Force Computers
SYS68K/SASI-l
Integrated Solutions, Inc.'
VME-SCSI
VME8500
.Mizar, Incorporated
(
o
NCR Corporation
ADP-31A-Ol
ADP-32-01
Plessey Microsystems
PME SASI-l
Scientific Micro Systems
510
Sigma Information Systems
SDC-RLVI12
HOST-6
Pe~ipheral Concepts
.....
_" ............
_-_
..... .
( .rket Trends
Peripheral Concepts estimates the total SCSI host adapter market to
be:
REVENUES ($)
SHIPMENTS
1984
1985
1986
1987
1988
S,151'
7,027I
13,080I
24,280I
42,250I
22.3I
29.4I
64.1I
114.1I
29S.4I
Revenues for this market are expected to produce a compound annual
growth rate of 69.2% from 1984 through 1988. Host adapter revenues for
'the microcomputer sector (IBM-PC, Apple II, S-100, and others) will
produce a compound growth of 72.6% in revenues for the 1984-1988
period, while the minicomputer sector (Unibus, Qbus, VMEbus, Multibus
( 1-11, and others) will experience a.6l.9% compound growth in revenues.
In both the microcomputer and minicomputer sectors, the overall host
adapter market is relatively new, as, is the products they supportBasic SCSI and Full SCSI controllers and peripherals. There are
currently over 25
~anufacturers
producing custom, OEM, and captive
•
versions of host adapters for many different systems (the Product
Matrix section
li~ts
of the potential host
most of the OEM suppliers and products). But much
adapt~r
business remains captive, as most
computer OEM's currently design and build their own adapters. Host
adapters also represent the widest variance in average selling prices,
from the $60-$90 range to over $1,200, depending upon performance and
host bus.
(
HOST-7
o
Peripheral Concepts
The two strongest growth areas are the lBM-PC and the VMEbus. Host
l
adapter revenues for the IBM-PC will grow an estimated 40.8% from 1984
to 1985, jumping to 114.7% from 1985 through 1986. Much of this growth
is attributed to new evaluations/qualifications of SCSI disk drives in
1986, as well as the true systems integrators and VAR's who will begin
to purchase both SCSI peripherals and high performance host adapters.
The growth from 1986 through 1987 will decline slightly to 99.7%, but
remain at this strong rate as new peripherals (in particular, optical
disk drives) and other SCSI devices begin to enter production.
Semiconductor suppliers will also enjoy a portion of these revenues,
as many OEM's will begin to use SCSI protocol chips and purchase
board-level products from third party suppliers.
The opposite situation exists in today's market, where most OEM's
(
iesign and manufacture
their own host adapters. This structure will
change as more choices of products with varying performance levels
become available, and in particular" the SCSI specification options
and sub-sets begin to mature through de facto methods. By 1988, IBM-PC
host adapters will account for $27.42
, Million in revenues out of the
$30.4 Million for this market. Other sectors within the microcomputer
market, particularly S-100 and the Apple II, will continue to playa
declining role in this
mark~t.
The S-100 will decline at a -47.6%
compounded growth, as shipments of S-100 systems decline rapidly over
the next several years. The Apple II series has had some activity with
the older SASI host adapters, primarily in external subsystem support.
But system integrators are no longer using the II-Plus or lIe machines
o
HOST-8
Peripheral Concepts
~~r
vertical markets in favor of the IBM-PC. Most host adapters
shipped in 1985 were done captively or in other words, within a disk
drive subsystem. This trend will all but eliminate the OEM market -for
Apple host adapters within the next two years, though there will still
be a small end-user demand.
The VMEbus will be particularly strong for SCSI. The VME controller
market is currently fragmented among many suppliers, mostly
"full-line" VME companies that also provide systems, SBC's, and other
board-level products. The lack of product selection in SMD or ST506
controller products will fuel the short term growth. From 1985 through
1987, VMEbus host adapters will grow an average of 85.5% annually.
Even after the establishment of controller products, the wide
selection of SCSI peripherals will help contribute to a strong
(~ompound
annual growth rate of 114.0% from 1984 through 1988.
Key Assumptions
o
SCSI-based peripherals will become a strong market, fueling the
growth of SCSI host adapters.
o
The demand for intelligent multi~tasking host adapters will
increase, displacing the older SASI-type adapters.
o
The rapid growth of the VMEbus market, coupled with the lack of VME
peripheral controllers, will increase the growth of VME-based host
adapters.
o
The growing use of IBM-PC's by system and vertical market
integrators, will boost the acceptance of SCSI for these machines.
(
HOST-9
Q Peripheral Concepts
._(
Cl "IHICOIlfPUTER
3S1
.•.•.••••.•.•••••••••••.••••••••••••••••.•••..•...•...•..••..••••.•••..••••••.•.•.•... !.
311
•••••••••••••••••.•••••••••••••••••••••••••••••••••••••••••••••••••••••• ·p.....IoIoiWOW....•
2S1 ••.••....•......••......•...•••.•..•••.....•...•....•............•.••..
211 ...•.•...•..•......•••..•••.•••..•.•.........•..............•..........
(I)
lSI
111 .........•.......••.•.•..•....•••........•....•.......
SI
HOST ADAPTERS
REVENUE SmtfARy
(
<
AcnJAL
1984
REVENUES BY PRODUcr TYPE (SOOO)
>
<
>
FOR!X:AST
1987
1986
1985
1988
1984-88
CONTROLLER TYPE
CAGR:
REV(SI)
(%)
REV(St)
(I)
MICROCOHPUTER GROUP
3,426
66.5
4,550
!1INICCIfPUTER GROUP
1,725
33.5
2,4"
$5,151
1001
$7',027
TOTAL REVENUES ($000)
ANNUAL GROW'I1f RATE
\
REV(SI)
(I)
REV($t)
(%)
REV($()
(I)
64.8
9,150
70.0
17,800
73.3
30,400
72.0
72.6%
35.2
3,930
30.0
6,480
26.7
11,850
28.0
61.9%
100% $42,250
100%
69.2%
100% $13,080
36.4%
100% $24,280
85.6%
86.11
SOURCE:
o
HOST-IO
Peripheral Concepts
74.0%
PERIPHERAL CONCEPTS, INC.,
......
(.
Cl MINICOMPUTER
3S1 ..•.......•......•.......................... .......•. •....•............................
~
381
...........................................................................w..w..w.,w,.w."'.
2S1 .......•.........•..................•..................................
U
Z
N
281 .................•....•..........•.....................................
I
151
(I)
181
IIOST ADAPTERS
:c
SHIPMENT SL'PtIAIY
<
SHIPMEYl'S BY PRODUct' rYPE (000)
AC'ruAL .
1984
<
>
. FORECAST
1985
)
1986
1987
1988
1984-88
CONTROLLER TYPE
CAGR:
:mITS(!:)
MICROCOMPUTER GROUP
MI~ICOHPUTER
GROUP
TOTAL SHIPME.'fTS (000)
ANNUAL CROWTH
~\TE
(%)
!JNITS([)
(%) l"lfITS([)
UNITS([)
(%)
(%)
L'NITS(I)
(%)
19.1
85.3
24.5
83.3
56.6
88.2
129.0
91.4
273.9
92.7
94.6%
3.3
14.7
4.9
16.7
7.6
11.8
12.2
8.6
21.5
7.3
S9.8%
22.4
100%
29.4
100%
64.2
100%
141.2
100%
295.4
100%
90.6%
31.2%
118.4%
119.9%
SOURCE:
109.2%
PERIPHERAL COHCEPl'S, INC;.
(
HOST-II
Q
Peripheral Concepts
SCSI HOST ADAPTERS
REVENUE 5IHtARY
l
<
AC'nJAL
1984
REVEHUFS BT INTERFACE TYPE ($00)
>
<
>
FORECAST
1987
1986
1985
1988
1984-88
CAGR:
REV($[)
(X)
REV($[)
(X)
REV($[)
(X)
REV($[)
(X)
.REV($()
(X)
2,624
50.9
3,695
52.6
7,933
60.6
15,842
65.2
27,421
64.9
79.8X
5100
202
3.9
173
2.5
82
.6
36
.1
15
.0
-47.8%
Other Micro
600
11.6
682
9.7
1,135
8.7
1,922
7.9
2,964
7.0
49.1%
$3,426
67%
$4,550
65%
$9,150
73% $30,400
72%
72.6%
MICROaJHPtTl'ER GROUP:
IBM-PC
TOTAL REVENUES ($000)
(
101.1%
32.8%
ANNUAL GRowm RATE
MINICOHPtTI'ER GROUP:
70% $17,800
REV($')
(X)
REV($')
94.5%
70.8%
(X)
REV($[)
(%)
REV($[)
(X)
REV($')
(%)
Multibu8
661
12.8
827
11.8
1,093
8.4
1,458
6.0
1,967
4.7
31.3%
VME
402
7.8
825
11.7
1,816
13.9
3,862
15.9
8,437
20.0
114.0%
JEC-Compatible
395
7.7
466
6.6
582
4.4
719
3.0
912
2.2
23.3%
Other Hini
267
5.2
359
5.1
440
3.4
441
1.8
533
1.3
18.9%
$1,725
33%
$2,477
35%
$3,931
30%
$6,480
27% $11,849
28%
61.9%
TOTAL REVENUES ($000)
43.6%
ANNUAL GROWTH RATE
TOTAL MARm ($000)
$5,151
100%
$7,027
100% $13,081
100% $24,280
SOURCE:
HOST-12
o
Peripheral Concepts
64.8%
58.7%
82.9%
100% $42,249
PERIPHERAL CONCEPTS, INC.
100%
69.2%
SEMICO.DUCTOR CO.TROLLERS
Introduction
The development of "single-chip" or VLSI controllers began shortly
after IBM's 1972 introduction of the Floppy Diskette Drive. This new
peripheral, with its serial-encoded data and unique motor control
signals, required a controller with well over a hundred SSI (Small
Scale Integration) devices. The cost of these early controllers
equalled that of the disk drive.
By the Mid-70's, the a-inch Floppy was being manufactured by several
c
companies for OEM distribution, expanding well beyond the traditional
IBM plug-compatible business. Floppy drives became the primary storage
device on other minicomputers, but also penetrated the emerging
microcomputer market as well. As volume shipments of these drives
began to occur, semiconductor manufacturers could justify the high
development costs of dedicated, custom LSI circuits. Pioneering this
field was Western Digital Corporation who, in 1976, began sampling the
first LSI floppy disk controller, the FD1771. This device was the
first of its kind to control both the data serialization/
de-serialization and motor control functions. Today, virtually all
floppy disk controller designs are based around one of the many LgI
controllers commonly available.
(
SEMI-1
,,-
~'~-.'
o
LLQ--w-_. . ._--,_.. , .__" ., -,.. . ,. . ".'. . . .
...... -"""I''''''_ _'_I.
-~..,.-~.
~:!fI"""' ..• -
Peripheral Concepts
~
. . . . , ........
'"''
•
,
From its beginnings in the floppy market, semiconductor controllers
have kept pace with the changes in the mass storage
periphera~
markets. Devices for winchester disks and streaming tape drives are
now commonplace. But the continuous evolvement of winchester
tech~ology
has segmented winchester chip products into various forms.
Depending upon application, choices must be made between the
"single-chip" or "chip-set" configurations. Each has their advantages
and disadvantages.
The
s~reaming
tape market has been dominated by the 1/4 inch cartridge
products. The emerging 1/2 inch market will surely have an impact on
the future of LSI devices for tapes. But regardless of the form factor
or interface specifics, semiconductor controller trends are clearly
divided among floppy, winchester, and tape products.
(,
Floppy Disk Controllers
The floppy disk
co~troller
chip has truly become a semiconductor
commodity. Virtually all types and price ranges of computers, from
home systems to minicomputers, are now shipped with a floppy disk
drive as the standard configuration. These computer OEM's either place
the floppy disk control logic directly on the motherboard, or include
it on an auxiliary board with another peripheral controller, such as a
winchester.
The amount of "glue" logic or extra circuitry needed to
~upport
an LSI
floppy controller has decreased significantly over the past two years.
o
SEMI-2
Peripheral Concepts'
•
!
I
Functions such as data separation, write precompensation, and DMA
l
(Direct Memory Access) are now common features of today's controllers.
ManY,manufacturers offer support chips for use with older generation
products, which further reduces the need for SSI-based support logic.
The only remaining circuitry commonly implemented in discrete form are
the I/O buffers and the host interface logic. Both of these functions
will likely appear in new LSI controller products (and also as
enhancements to existing products) within the next two years. The
high-current, I/O buffer function can easily be handled with today's
CMOS processes, and the standardization of low-end computer busses
(i.e., IBM, SCSI, 80186, M68000, etc.) are now mature enough to
dedicate much of this logic to silicon.
~
The popular configuration of combination winchester/floppy storage on
I
(
today's computers has spurred the development of some "combo"
winchester/floppy controller chips. Although these devices appear to
satisfy a majority application, their acceptance so far has been poor,
and will continue to be so in the near term. A certain amount of
flexibility is usually
. at
sacrifice~
the desigri-level when combining
these functions. Products that have been previewed so far, require
additional logic to "split" the signal lines for the two peripherals.
Some do not allow concurrent operations, and others still require
external logic, such as individual data separators. And like all new
semiconductors, pricing is before the erosion curve, resulting in a
higher selling price than the combined price of separate winchester
and floppy controller chips. Today, about lout of every 5
SEMI-3
o
Peripheral
c~ncepts
microcomputers are shipped with both winchester and floppy. This
(
indicates that the market still prefers the "add-on" approach to
higher capacities, limiting the existing market for such a device.
It is likely that the "next generation" LSI floppy controller will not
occur for several years. Many start-up companies have attempted to
introduce high capacity floppy drives (3-10 Megabytes), but backward
compatability issues, the use of special media, pre-formatting
requirements, etc., has left the floppy market stalled at the 96 TPI
level. There is little room for innovation in either drive or
controller products. And with current 'floppy drive prices below $75 in
many circumstances, this situation will not change in the near future.
Until volume shipments of high capacity floppy drives occur, there is
no incentive (and high risk) for a semiconductor supplier to invest
C
LSI development dollars in new products. Likewise, existing
controllers are adequate for today's products, including the newer
3-1/2 inch drives.
Winchester Controllers
Despite its similarities, the LSI winchester controller market is
structured differently than the floppy market. For one thing, the
"single-chip" winchester controllers that are now available are not
intended as replacements for board-level winchester controllers. In
fact, just the opposite is occuring. In many instances, LSI devices
are developed exclusively for use on a winchester controller board.
o
SEMI-4
Peripheral Concepts
The tSI winchester controller market can be divided into three classes
t
of products. Although there is some overlap, these classes really
define the marketing strategies and customer base for the various
types of chips.
CHIP-SET CONTROLLERS- This product class typically consists of two to
five devices. Each device performs a separate disk control
function such as encode/decode, error correction, SERDES, etc.
Chip-sets are now being called ASIC's (Application Specific
Integrated Circuits), a term which has become popular in
recent months. Manufacturers of chip sets usually produce
board-level controllers as the main product line, using the
chips on their own designs. Besides this captive use, some
chip sets are sold to customers who buy the .manufacturing
r
l
rights of one or more board products. Depending .upon the terms
of the agreement, the buyer may manufacture all or part of his
total consumption and in
essenc~,
becomes his own
"second-source". Since many chip sets have been originally
designed for use in a particular board-level controller, there
is a tremendous difference in compatibility of chip sets from
one controller supplier to the next. Not only are there
incompatibilities in terms of pin-outs, but different
partitioning results in completely different functionalities.
These "hardware-specific" chips are often difficult to sellon
a typical OEM basis.
SEMI-S
o
Peripheral Concepts
SINGLE-CHIP CONTROLLERS- This product class includes devices normally
having 40 or more pins which perform functions of motor
control, data encoding/decoding, and sometimes error
correction. They utilize a set of high-level commands similar
to that of a microprocessor. In fact, many are just dedicated
ROM versions of microprocessors. Single-chip winchester
controllers are also generic. That is, they have not been
designed to work with any particular hardware configuration.
They may be used on a captive basiS, but single-chip
controller makers are typically merchant-market semiconductor
manufacturers. Computer OEM's purchase single-chip controllers
for use on an in-house disk controller design, just as they
purchase microprocessors or other integrated circuits.
~
SUPPORT CHIPS- These devices are similar to floppy disk controller
support chips, in that they are designed to be used with the
manufacturers' single-chip' controller. Their purpose is to
reduce the amount of glue logic around the main controller
chip. They too are sold on an OEM basis, and many controller
manufacturers have "chip-set" pricing structures for the OEM
.
who buys both single chip and support chips for a particular
design.
Single-Chip vs Chip-Sets
Single-chip controllers are not meant as a replacement for chip sets.
Both classes of products have a place in the market and satify
o
SEMI-6
Peripheral Concepts
different applications. The key advantage of chip sets is flexibility
\
'-- in design. A new interface or a custom controller may only require
replacing/modifying one device in the set, or simply firmware changes
on the board.
Single-chip controllers have far less flexibility. Even a moderate
change can result in long development time and extensive layout
changes. But these devices represent the lowest cost implementation.
Obviously, they are designed to work with the more established
winchester interfaces, such as the STS06/412.
During the past year, many microprocessor suppliers have announced
single-chip winchester controllers. The common approach to marketing
these devices is to include them as a "family component" or as a
(
support device for a particular microprocessor. These family
components typically include chips to perform DMA functions, Parallel
or serial I/O, MMU (Memory Management Unit), and RAM/ROM. If their
price/performance is competitive, many systems designers will choose
the microprocessor supplier. The average OEM typically buys many
\
support devices from their primary microprocessor supplier. The OEM
will likely be able to
negoti~te
better pricing from an existing
supplier. There is also a better chance of having a viable
second-source for the chips, since most microprocessor suppliers must
provide second-sources in this highly competitive market. All of these
factors will place strong competition on OEM chips from the
independent winchester controller manufacturer.
SEMI-7
o
Peripheral Concepts
The major chip-set suppliers will probably be the board manufacturing
t
companies for
~~e
next several years. Many of these suppliers do not
"-
have distribution channels or staffing to support OEM semiconductor
sales.
The market for support devices is limited. Almost all support devices
sold today provide functions that will later be incorporated into a
future version of the single-chip they support. Most suppliers (and
their customers) view these devices as an interim product.
All single-chip controllers rely heavily upon mature, stable
-
peripherals in particular, their interface specifications. At an
average R&D expenditure of $400-8001 and two years development time,
the single-chip developer cannot rely on pure speculation in new
product plans. However, the long lead time to product implies prudent
C
forecasting of changing market conditions for at least 18-36 months
out. Fortunately for the chip maker, the ST506 interface has remained
as the major interface of choice for the"last several years. Most
suppliers do not see this changing in the near future. New winchester
controller devices will likely be limited to enhancements of existing
•
products in the near future. Additional functions to existing designs
such as data separation, low~power CMOS versions, and integral sector
buffering are the key technical areas being explored.
(
o
SEMI-8
Peripheral Concepts
-------------"'---
-~----
-._-_.
_... --
(
,ape Controllers
Semiconductor devices for streaming tape control have been limited to
the chip-set confi.uration. These chip sets support either the QIC-36
or QIC-02 standards, and are primarily used on multifunction
winchester/tape board controllers. The volume shipments to date for
streaming tape drives have not been adequate'to justify the
development of single-chip controllers. However, expect some product
announcement activity within the next six months. Many manufacturers
believe that the availability of single-chip tape controllers will
greatly influence the growth and size of the market.
Another factor which will affect market growth is the capacity of
winchester disk drives. The majority of single-user systems today (and
(the bulk of drive shipments) are at the 20 Megabyte level or less. As
this 20 Megabyte standard shifts to 50 Megabytes and beyond, using
floppies for back-up purposes betomes impractical, even on a
file-by-file basis. Future single-chip tape controllers may include
multifunction capabilities,
combin~ng
,
winchester and tape, as well as
versions that are software and/or hardware compatible to their
winchester counterparts.
SEMI-9
( ) Peripheral Concepts
Product Definition
(
Products and forecasts within this group refer to semiconductor
devices used to control floppy, winchester, and tape drives, and are
sold to OEMs either as standard products or through custom contracts.
During calendar year 1984, there were 12 manufacturers shipping 61
different products. Examples of products and manufacturers in this
group are:
c
(
o
Adaptec, Inc.
AIC-lOO
AIC-250
Data Technology Corporation
DTC1505
DTC1506
Hitachi, Ltd.
68463
Intel Corporation
8272A
82062-05
National Semiconductor Corp.
DP8451
DP8461
NCR Corporation
5380
5385E
NEC Electronics, USA
uPD765A
uPD7261
Scientific Micro Systems
5050
5060
Standard Microsystems
FDC9266
HDC9224
Western Digital Corporation
WD1770-00
WDIOlOA-05
SEMI-IO
Peripheral Concepts
l
'arket Trends
Peripheral Concepts estimates the total market to be:
1984
1985
1986
1987
1988
REVENUES ($)
89.70M
109.99M
135.80M
153.98M
168.05M
SHIPMENTS
10.33M
l3.0lM
l5.74M
18.27M
21.0lM
Revenues for this market are expected to produce a compound annual
growth rate of 17.0% from 1984 through 1988. The growth from 1984 to
1985 for winchester/tape controllers is estimated at 29.2% in revenues
to $43.36 Million, up from 1984's $33.55 Million level. Unit shipments
will grow slightly faster for the same period due to moderate price
erosions; 1.80 Million units for 1985 versus 1.46 Million for 1984 .•
(~owever, many new product announcements during 1985 (especially from
traditional semiconductor manufacturers), will actually increase the
industry's overall ASP (Average Selling Price) by approximately 2.1%.
As these new products enter volume production, normal price erosions
will begin to occur again during 1987, yielding a -13.9% decline in
•
overall ASP. For the same period, unit growth will reach 3.51 Million
units (up 39.8% from 1986 levels), generating revenues of $74.14
Million. Finally, estimates show the winchester semiconductor market
to reach close to 5 Million units or $81.17 Million in 1988,
continuing at an average 35-39% year-to-year growth rate.
Semiconductor floppy controllers present a different scenario. The
mature floppy controller market (dominated by the NEC765A and
(
SEMI-II
o
Peripheral Concepts
I
I
I
compatibles), has reached 1984 levels of 8.87 Million units, growing
II
at 26.2% from 1984 to 1985, to 11.19 Million in shipments for calendar
I '
II
!
<..
1985. Revenues for the same period are expected to grow 18.7%, from
$56.15 Million to $66.64 Million~ Although these products are mature,
the price erosion curve has peaked out during 1982-1983, resulting in
! '
i
only a 5-7% annual erosion for the coming years, compared to the
20-25% peak experienced in 1983. Compound annual growth rate from 1984
through 1988 is estimated at 16.3% in units, 11.5% in revenues. A
rather slow growth when compared to the winchester segment.
Nevertheless, absolute unit shipments far exceed all other segments,
with an estimated 16.24 Million units being shipped in 1988,
generating $86.88 Million.
ma CAPTIVE
DOE"
7999 ...............,........................................................................ .
(
,
U
H
S
(10
6999 ....................................................................................... .
seee ............................................................................... .
4eee ................................................................ .
leee
2eee
leee
The most interesting shift in product mix over the next five years is
the division between captive and OEM use. During 1985, approximately
76.4% of all winchester chips were used captively. That is, they were
(
SEMI-12
o
Peri'p~eral Concepts
~. ,
~- .~."
............. - ..
-.~
-.
included on board-level products shipped by board-level controller
~
manufacturers. By 1988, it is estimated that captive consumption will
drop to 47% of the total market. By this time period, many LSI devices
will also rival the capabilities of today's lower-performance board
products. Coupled with the declining prices of winchester drives, this
peripheral will likely move into the basic configuration of many
systems. But the majority of this shift is caused by a supplier mix to
semiconductor-only manufacturers. Microprocessor-specific winchester
controllers, especially those designed to interface to ST506 and ESDI,
will constitute the majority of winchester controller chips by 1988.
(
SEMI-13
o
Peripheral Concepts
#Il"'~
Key Assumptions
o
OEM semiconductor manufacturers will enter the winchester market
during 1985-86, contributing to strong market growth in Mid-86.
o
Existing LSI floppy controller products will be adequate for most
designs, slowing the need for next generation products.
o
By the end of 1987, OEM consumption will surpass captive
consumption of winchester controllers.
o
Winchester capacities beyond 20 Megabytes will fuel the need for
LSI tape controllers and multifunction (winchester/tape) devices.
CALEB DAR 1984 MARIET SHARES
REVEBUES BY MABUFACTURER
Western Digital Corporation
36.4%
Standard Microsystems
21.8%
NEC Electronics USA
17.6%
Intel Corporatioa
13.4%
National Semiconductor
3.2%
Other
7.6%
100.0%
o
SEMI-14
Peripheral Concepts
,
o
~la
FlOPPV
................................................ ...................................... .
lE1Q1
•.••••••••••••.••.•••.••••..••••••••••••••.••••.•.•.•..•..•..••.•.•••.•••••••..••.••••..
1~8
.......................•...•...........•.•.....•......
~
128 ................•..................•.
98
68
38
-.
<
>
R!VEHUES BY PRODUCT TYPE ($000)
P'ORP):AS'f.
<
ACTUAL
1984
1986
1985
>
1987
1984-88
1988
alNTROLLER Tn'!
CAGR:
REV(SI)
(I)
KEV($l)
W1nchesterITape
33.554
37.4
43.362
Floppy
56.150
62.6
66.636-
TOTAL REVENUES ($000)
ANNUAL GROWTH RATE
$89.704
100% $109,998
REV($I)
(I)
REV($I)
(I)
REV($I)
(%)
39.4
61.600
45.4
74.144
48.2
81.175
48.3
24.7%
60.6
74,200
54.6
79,840
51.8
86.880
51.7
11.5%
100% $168,055
100%
17.0%
(I).
100% $135,800
22.6%
100% $153,984
23.5%
13.4%
SOURCE:
9.1%
PERIPHERAL CONCEPl'S, INC.
SEMI-15
Q Peripheral Concepts
I
(I)
2seee
24eee
2eeee
16eee
12eee
seee
4eee
Cl FLOPPY
...•....•..................•••..•.•.......••..•..••... ...••..•.•.•.•...•..•.....•.
~~
....
....••..........•.•....••••.......••••••.•....•..................••...••.•.•............
••.•..•...••.......••..•...•.•......••••...•.....••.......•....•...•.•.
..........•............•.•••......•...
~~~~~~~.
••............••...•........•........
SEMICONDUCTOR CONTROLLERS
SHIPMENT StlHHARy
<
ACTUAL
1984
SHIPHENTS BY PROooer TYPE. (000)
>
<
>
FORECAST
1985
1987
1986
1988
1984-88
CON'1'ROLL!R TYPE
CAGR:
UNITS (I)
e%) 1JJfITS(1)
L
e%) UNITS (I)
(%) UNITS (I)
(%) UNITS (I)
e%)
Winchester/Tape
1,466.4
14.2 1,806.7
13.9 2,514.3
16.0 3,513.9
19.2 4,n5.0
22.7
34.3%
noppy
8,872.7
85.8 11,199.3
86.1 13,226.4
84.0 14,"7.8
SO.8 16,239.3
n.3
16.3%
10,339.1
100% 13,006.0
100% 15,740.7
100% 18,271.7
100% 21,014.3
100%
19.4%
'1'Ol'AL SRIPHENTS (000)
ANNUAL GROW'11I RATE
25.8%
16.1%
21.0%
SOURCE:
o
SEMI-16
Peripheral Concepts
15.0%
PERIPHERAL COHCEPl'S, IHe.
IMBEDDED DISI CONTROLLERS
Introduction
Since the development of the first disk drives, the functions of the
controller or formatter have been treated as a separate entity.
Probably most responsible for this way of thinking was the original
organizational lines at IBM. A separate peripheral division developed
the disk drives, while another developed controllers and formatters
for specific systems. Control Data Corporations' 1968 introduction of
the SMD interface further promoted this separation. By providing this
new peripheral interface, system manufacturers could use the disk
drive as a" building block to create a variety of mass storage systems
for different computer requirements. Each new generation of a machine
(
always requires some "customization" of the mass storage system; that
customization was and is still done on the controller, not the disk
drive interface.
In the minicomputer sector, Digital Equipment's unique disk drives
(and controllers) used on Unibus machines opened up a whole new market
for add-on companies specializing in controllers. By designing Unibus
controllers that worked with the general purpose SMD interface, a
lower-cost, high performance alternative was offered to the end-user.
Hence, the add-on controller market was born.
Today, a separate controller/formatter is still the dominant way to
partition a mass storage system. But many companies are beginning to
IMBEDDED-1
o
Peripheral Concepts
II
!
I
I
look at a "merger" of the controller and disk drive within the same
product. The controllers used in .. this new concept are being called
"imbedded".
Imbedding the controller within the disk drive is not a new concept.
During the mid-70's, when the eight-inch floppy disk drive was in full
swing, intelligent floppy drives were introduced by Remex-Excello
Corporation and Innovex (both companies have long since left the
floppy drive business). These products were never too successful, but
the lack of an intelligent interface standard at the time may be
responsible for their premature death. The coming wave of LSI devices
also contributed to their demise, as the component count and board
space of the entire floppy controller was quickly reduced to 3 or 4
square inches and less than 5 chips. Since that time, no other
(
attempts were tried to add an intelligent interface or imbedded
controller within a floppy disk drive for the OEM market.
A different situation than that of the floppy exists with winchester
and tape peripherals. There is no dedicated LSI
devic~s
to control
these peripherals, at least not at the level of integration that the
floppy disk drive now enjoys. Capacities, transfer rates, and all of
the parameters that affect a "locked in silicon" winchester controller
are changing, so it is likely that total LSI support comparable to the
floppy will not occur for a number of years on "non-STS06"
controllers.
o
IMBEDDED-2
Peripheral Concepts
-,[
~he
!d for Imbedding
?here are now several choices of intelligent, general-purpose
.nterfaces available today (such as SCSI and IPI-3). The overwhelming
ldvantage of using these interfaces within the disk drive is that they
'isolate" the computer from the intricacies of the peripheral.
)isk drive performance is changing for the better, but interfaces must
:emain stagnant. The need for imbedding is being driven by the
lncreasing capacities of winchester disk drives. The quality of the
.
media used in these drives is not increasing proportionately to
:apacity. As a result, the flawed areas or "bad spots" on the disk's
3urface increase in both frequency and size. Although a combined
!ffort of the controller and host I/O firmware handles these bad spots
todr{
at some point in time they will become unmanageable. A
nulti-user environment, for example, leaves little time for the CPU or
controller to both manage and search the disk for alternate
sectors/tracks. By imbedding the controller with the drive
electronics, more internal management of these flawed spots can be
•
realized, improving overall system performance.
The static nature of peripheral interfaces is a detriment to higher
transfer rate, higher capacity winchesters. It is unlikely that an
existing system manufacturer would specify/purchase any drive that
contains a unique device-level interface, regardless of its
performance or capacity improvements. With an imbedded controller, the
true device-level interface is "buried" in the disk drive and may be
IMBEDDED-3
( ) Peripheral Concepts
.....'
totally unique, since the system designer neither uses it nor cares
how it is structured. In
additi~n,
complete changes
~n
technology,
such as a transition from magnetic to optical disk drives, can be made
smoothly with an intelligent interface on the drive (providing both
the "old" and the "new" interfaces are the same). Imbedded controllers
can "hide" these physical characteristics of the technology used.
There are definite cost advantages to be gained from imbedding. Since
flaw management becomes an internal function of the drive, a
lower-grade media can be used. This is one of the major cost
components in a winchester drive. A similar move could also be applied
I
to the recording heads. The life span of existing, lower cost
I
technologies (such as ferrite heads and oxide media) may well be
I
I
\
expanded as a result of imbedding.
I
(
The manufacturing cost of the combined controller/drive should be less
I
than the cost of separate units.
I
M~ny
duplicate components such as
microprocessors, ROM and RAM, drivers/receivers, etc., can be shared
by both drive control and formatter electronics, resulting in less
\
printed-circuit board "real estate", fewer components, and lower power
consumption.
The possibilites of imbedded controller configurations are many. The
higher-volume computer systems, such as the IBM-PC and compatibles,
have the potential to eliminate the intelligent I/O bus altogether. It
is certainly possible to develop a drive bus that in actuality, is the
backplane bus of the target system. All that would be needed is a
o
IMBEDDED-4
Peripheral Concepts
~
~
-
____
,
~
.
_
.
.
t
.
,
,
_
'
....... _
~
...._:..-
"
',",,_
"
~
_
'
,,_ .•
__
·•
_ _ _" " ' ._ _
d
_ _ _ _ _ _. . . . . . . . . . .
cable between the disk drive and one of the slots in the backplane. On
.. smaller diameter winchesters, it may even be possible to plug the
drive directly into a backplane slot with appropriate hardware.
But there are also disadvantages in offering a combined controller and
disk drive. The primary one is cost. Even if the price of the combined
unit is equal to that of its separate counterparts, replacing a
host-specific controller board will create the need for a host
adapter. The controller board may have moved into the drive, but the
backplane slot is now occupied by the host adapter. Another problem is
multiple drives. Although very few systems use more than one fixed
drive today, there are a number of computers with one-fixed/
one-removable configurations. Each drive is likely to have its own
imbedded controller, increasing the total system cost. A possible
(
solution may be a device-level port, such as ST506 or SMD, feeding a
second drive from the intelligent primary drive. But this will bring
back some of the cost in components (such as drivers/receivers) which
were eliminated by imbedding.
Many alternate sources exist for mature. device-level drives (e.g ••
ST506/412, SMD) as well as controller boards. The OEM equates this to
more competitive pricing, easy procurement, and fast reponse when
demand changes. It is unlikely that a combination controller/drive
will have many second-sources, even at the functional level. There are
no standards for intelligent drives and even if, say, SCSI was chosen,
the actual command and hardware options implemented by each
manufacturer would vary considerably.
IMBEDDED-5
Q Peripheral Concepts
Custom modifications of a standard controller product, in order to
l
meet a specific customer's needs, is in common practice today. Many of
these changes require both firmware and hardware changes. Modifying an
imbedded controller will be prohibitively expensive,
sinc~
much of the
logic is shared by the drive electronics. There is also less available
space in the shared ROM/RAM to implement new functions and features.
Market Structure Analysis
Market entry into intelligent disk drives require developing a dual
expertise in both drive and controller technology. The potential
manufacturer must have electrical and mechanical skills to build the
drive itself, while the controller portion will require operating
systems knowledge, analog/data separator engineering, and error
(
correction/file management expertise. For these reasons, the first
imbedded products are the result of joint product developments between
drive and controller manufactttrerw It is likely that custom or
semi-custom controller components will have to be developed to meet
physical space requirements and new functionaL characteristics not
l
normally done within today's controller chips.
The first imbedded products will however, use existing controller
chips. Obviously, this is "not the lowest cost/lowest component count
method to imbedding, but it does allow the development of entry-level
products.
o
IMBEDDED-6
Peripheral Concepts
it
In the short term, the imbedded market will be a "chip business".
Drive manufacturers.wi11 purchase standard and/or custom chips from
controller suppliers (unless of course, the controller supplier is
also in the disk business) and incorporate them into drive designs.
Another distribution channel in the future may be the large OEM who
purchases "mechanism-only" winchesters and does the electronics design
himself using various controller chips. Indeed, this would be an
ambitious effort, since it implies that the OEM will have in-house
drive and controller expertise. Any OEM who can afford this level of
engineering and manufacturing overhead probably has the clout to
establish their own standards anyway, and would have no incentive to
use these products.
The uniqueness of the peripheral manufacturers' drive electronics
(
(especially in the servo area) and the physical size differences of
the drive electronics board from one manufacturer to the next, will
prohibit the creation of any intelligent drive and controller board
combination for the OEM market. In addition, mechanism-only
winchesters are not normally available as standard products from
l
winchester suppliers (although they can be had on a custom basis). It
is also unlikely that a arive manufacturer will purchase boards from
the controller supplier, containing his drive electronics design and
the added controller circuitry. Almost all drive vendors have captive
PC manufacturing facilities here and abroad, now producing drive
electronics boards for existing winchesters. The only difference (from
IMBEDDED-7
r
o
Peripheral Concepts
a mariufacturing standpoint) would be added component count. Hardly a
reason to "farm-out" the new board product.
The future suppliers of imbedded controller chips will most likely be
those manufacturers who now produce board-level controllers. Many of
the chips used captively on these boards can be modified and/or
augmented to produce the new functions.
As the imbedded market begins to develop, board-level controllers will
not go away. In fact, as the traditional functions considered "the job
of the controller" move into the disk drive, a new generation of
controllers will emerge for use with these intelligent drives.
Product Definition
Forecasts within this group refer to semiconductor products designed
to be used within winchester and tape drives of various form factors.
During calendar 1984, there were no OEM
p~oducts
being sold
specifically for this purpose. During 1985, several controller
manufacturers began to sell traditional controller chips for use
within disk drives including Nat~onal Semiconductor, Scientific Micro
.
Systems, and NCR Corporation •
o
IMBEDDED-8
Peripheral Concepts
c'farket Trends
to
Peripheral Concepts estimates the total imbedded controller market
be:
1984
SHIPMENTS
1985
1986
1987
1988
19.81
71.71
290.91
817.61
9371
3,4251
12,9101
33,1801
REVENUES(IF SOLD)$
Shipments for this market have begun in 1985, as existing winchester
controller chips are beginning to find their way into some disk drive
products. Compound annual growth rate of shipments for 1985 through
1988 is expected to be 245.4% which represents a strong growth rate,
but typical of a new market. Winchester shipments will grow faster
(
than imbedded tape controller shipments, with levels approximately ten
times higher. Estimates for 1986 winchester projections are 63.871
units and tapes at 7.851 units.
The valuation of revenues are on an "if-sold" basis. Many different
configurations will require a different number of chips per drive, as
•
well as some custom drive devices, especially in 1986 and 1987 when
new circuits become
available~
The average selling price for the
industry in 1985 is estimated at $47.00 per unit (a "unit" being an
average one or more chips in a set), dropping to $40.20 by 1988.
If-sold revenues from 1984 to 1988 will grow at a compound annual rate
of 228.4%, or slightly less than units due to this moderate price
erosion. It is expected that price erosions will not be more
IMBEDDED-9
r
o
Peripheral Concepts
significant than stated, since this new market will see many new chips
(
targeted specifically for drives. In fact, only 5-6% of the 1986
shipments will constitute unique chips designed especially fo~ drive
imbedding, while the remaining 94-95% of the shipments will be
"standard" chips currently used on winchester controller boards. By
198a, high performance devices specific for drive-imbedded
applications will constitute 33.5% of shipments, or 543,000 units.
Over the 4-year forecast period (1985-1988), it is expected that the
SCSI interface will account for over 96% of all imbedded controller
types.
ley Assumptions
o
Most of the imbedded controller market will be a "chip" market, as
drive manufacturers will purchase devices for captive board
manufacturing.
o
In the short term, most imbedded controller devices will be
existing semiconductors now used on bo~rd-level controllers.
o
Over 96% of all imbedded controllers will use the SCSI interface.
o
Imbedded controllers for tape drives will grow at a similar rate to
winchesters, but unit volumes,will be significantly less.
o
Imbedded controllers will displace the lower-performance SASI
board-level controller m~rket.
(
o
IMBEDDED-I0
Peripheral Concepts
t
•
'ri
.1
•
WINCHESTER
•
TAPE
3S ................................................................................. '"..... .
~8
I
(S)
.................... ~ ................................. ................................. .
2S ......•.......••....•..••••.....••••......••.••.......................•.•.••..••........
28 ..............................•.....••.•...............................
is
...................................•...................................
18 .....•••...••.....•.•..•.•.......•.•....•...................••.•.•.....
~
......................•..........•...•........••......
IMBEDDED CONTROu.ERS
<
AC'l'UAL
REVENUES BY PROOOcr TYPE ($000)
>
<
>
1984
FOm:AST
1986
1985
1987
1988
1985-a8
CONTROLLER TYPE
CAGR:
IEV($I)
WL'fCR!STD
TAP!
Tal'AL RBVEHUFS ($000)
AliNUAL GR<7tmf RAT!
(I)
IEV(SI) I
0
0.0
0
0.0 •
$0
01
(I)
lEVe$I)
(I)
REVe,I)
(%)
IEV(,I)
(%)
840
89.6
3.040
88.8
11.S3O
89.3
29.540
89.0
227.6%
97
10.4
38S
11.2
1.380
10.7
3.640
11.0
234.8%
$937
100%
$3.42S
100% $33.180
100%
228.4%
1001 $12.910
265.S%
276.9%
SOURCE:
157.0%
PERIPHERAL CONCEPTS, INC.
(
IMBEDDED-ll
(9 Peripheral Concepts
C
lese
gee
u 7se
6ee
(I) 4se
Jee
lse
I
III WINCHESTER
•
TAPE
.•..........•..••..•..••.......•...•...............•.. ...•.•... •.......•...............
~
....•............................•....•............•............................•.......
.....••.......•.••...•..••.•.••..............•..•..........••..••.•....
................•................•.•...........•..............•........
....................•.......•...... .................. ................ .
~
................•........•.....•......•...............
...............................•.•..•.........•.•.....
(
(
ACTUAL
SJIIPHEM'l"S BY PRODUCT TYPE (000)
)
<
)
POIB:AsT
1984
1985
1987
1986
1985-88
1988
OOIITROLLER TYPE
CAGR:
UHITS(I)
(%) UNITS (I)
1(%) UHITS«()
(%) UNITS (I)
(%) tJHITS(l)
(%)
WINCHESTER
0.0
0.0
17.9
90.4
63.9
89.1
261.5
89.9
734.8
89.9
245.0%
TAP!
0.0
0.0
-1.9
9.6
7.8
10.9
29.4
10.1
82.7
10.1
251.8%
TOTAL SHIPMENTS (000)
0.0
19.8
100%
71.7
100%
290.9
100%
817.5
100%
245.6%
01·
262.1%
AJOO1AL GROW'nI RAT!
305.71
SOORCE:
PERIl'HERAL COHCEPrS. INC.
IMBEDDED-12
Q Peripheral Concepts
----"-'.-~-.........---
..-----
181.0%
~-.--.---.---------
(
PRODUCT MATRII
This section details manufacturers products which are in production or
will enter production before the second quarter of 1986. The products
are segmented into SCSI, IBM-PC, Host Adapters, and LSI sections.
Within each section, products are alphabetized by manufacturer.
Although most current controller products ~re listed, those which are
being phased-out of production have been omitted. Likewise, products
in which the individual manufacturer could not supply OEM pricing have
not been included since these products are too new for reliable
availability data or are simply not sold on an OEM basis.
The product data presented here has been compiled from manufacturers
specifications and/or phone inquiry to personnel at each company. We
have c6ecked all data for accuracy. Inevitably, omissions and/or
errors occur, so please contact us so we may correct them prior to the
next edition.
(
Products in this section are classified as either Winchester-only,
Tape-only, Floppy-only, or Multifunction. Form factors of the drives
they support (i.e., 5-1/4 inch) are based upon the physical size of
the controller product or the interface type it supports.
Drive Characteristics: The type of interface, maximum number of
drives, sector sizes, and error correction methods are listed.
Host Characteristics: The level of SCSI, size of the RAM buffer
resident on the product, SCSI transfer rate, and minimum
interleave factors are inclu~ed. In the case of the level of
SCSI, products have been categorized as XSASI-compatible,
Single-Initiator (Basic SCSI without arbitration), or
Reconnect-Disconnect (Full SCSI or Arbitration supported). Keep
in mind that this is a classification, not a performance
measurement. For example, it is possible for a Basic SCSI
controller to outperform a reconnect/disconnect one, depending
upon the performance specifications measured.
Physical Characteristics: Physical dimensions of the board and
power requirements are included.
Availablility/Price: Current availablility as of August, 1985
and the OEM list price are provided.
Comments: Some comments have been added to those controllers
which have unique characteristics that could not be stated in
the above categories.
PRODUCTS-1
o
Peripheral Concepts
l
J ~ •
IBM-PC
IBM-PC controller products have been listed in a similar fashion to
SCSI, except the model of support (PC, XT, or AT) and the status of
the BIOS ROM (whether included or not) has been added.
Host Adapters
Host adapters include the type of Host bus supported (i.e., Qbus,
IBM-PC, 5-100, etc.) as well as any particular host features or
characteristics supported.
LSI
Semiconductor controllers come in a wide variety of fuctions and
feat:ures. Products have been listed by "Controller" definition or the
type of support chip they are (i.e., Buffer Memory Controller, Data
Separator, etc.). OEM Price refers to the first package type listed in
the "Package Size" category.
(
(9 Peripheral Concepts
PRODUCTS-2
IlAflUFACTUR£R
ADAPTEC, INCORPORATED
ADAPTEC, IICORPORATED
ADAPTEC, INCORPORATED
ADAPTEC, INCORPORATED
IIODEL NUttIER
ACB-3530
ACB-4000
ACB-4010
ACB-4070
CONTROLLER TYPE
Tape Only
(1/4 inch Strelllr)
lIinchnter Only
(5-1/4 inch)
lIinchester Only
'5-1/4 inch)
llinchister Only
'5-1/4 inch)
Drive interface
IIIC-36
ST506I412
ST506/412, RelOvabll
ud/or Hard StctorH
S1506/412 (2,7 RlL code)
• 7.5ftbit/sec data rate
"-xilUl • Drivel
1 Tapl
2 lIinchlsteri
2 lIinchesters
2 lIinchesters
256 through 1,024
256 through 1,024
256 through 1,024
DRIVE
CHARACTERISTICS
Sector Sizes -Bytel Per IIC-11124
Error. Detection
16-Bit CRe
32-Bit ECC
32-Bit ECC
32-Bit ECC
Error Correction
Read-after-llritl
Single-Burst/8 Bitl
Single-Burst/8 Bits
Single-Burst/S Bits
Fla, Skipping
Block Re-wite
Sector-llvel
Sector-Itvll
Sector-IlVel
Level of SCSI
Reconnect/Disconnect
Single-Initiator
Single-Initiator
Single-Initiator
Size of Buffer
BKBytes
IIC Bytes
IK Bytn
llC Bytes
Host Trusfer Ratl
1.5 flBytes/slc.
1.5 ftB~tes/sec.
1.5 ftBytes/sec.
1.5 "Bytes/sec.
"inilUl Interleave
MIA
1:1
1:1
1:1
Physical Dillftsionl Length: 8.75 inches
Length: 7.75 inch..
lIidth: 5.S0 inches • lIidth: 5.75 inches
Height: 0.50 inch..
Height: 0.50 inchls
Length: 7.75 inches
lIidth: 5.75 inches
Height: 0.50 inches
Length: 7.75 inches
Width: 5.75 inches
Height: 0.50 inchn
Paler Supply
+5YDC • 1.7A ("ax)
+l2YDC • l00.A (ftaxl
+5YDC • I.SA 'ftax)
+12VDC • 3001A '"ax)
+5YDC • I.SA 'ftax)
+12VDC • 3001A '"ax)
+SYDC • I.SA 'ftaxl
+12VDC • 300lA '"axl
Availability
NOlI
NOlI
NOlI
NOlI
S225/loo's
S255/100'I
S280/100's
HOST
CHARACTERISTICS
(
PHYSICAL
CHARACTERISTICS
l
DE" Price (U.S.I/ITY .425/100'5
COtDIENTS
PRODUCTS-3
(9 Peripheral Concepts
SCSI
IlANUFACTIJRER
ADAPTEC, INCORPORATED
ADAPTEC, INCORPORATED
ADAPTIVE DATA SYSTEftS
INCORPORATED
ADAPTIVE DATA SYSTEftS
INCORPORATED
IIODEl NU"BER
ACB-5500
ACB-590
CD"BO-I
CD"BD-II -
CONTROLLER TYPE
Winchester Only
'5-114 inch)
Winchester Only
'8 or 14 inch)
llul ti function
'Winchester/Tape)
!luI ti function
(Winchester/Tape)
Drive interface
S1506/412
S"D
S1506l412,
and DIC-36
ESDI (10 "bits/secl,
and DIC-36
"axilUi I Drives
4 Winchesters
8 Ninchesters
2 Winchesters and
1 Tape
2 Winchesters and
1 Tape
256 through 2,048
128 through 4,096
128 through 4,096
DRIVE
CHARACTERISTICS
Sector Sizes -Bytes 256 through 2,048
-
(
Error Detecti on
32-Bit ECC
32-Bit ECC
48-Bit ECC
48-Bit ECC
Error Correction
Single-Burst/B Bits
Single-Burst/8 Bits
Double-Burst/12 Bits
Double-Burst/12 Bits
FII.. Skipping
Sector-level
Sector-IlVel
Sector-level
Sector-level
level of SCSI
Reconnect/Disconnect
Reconnect/Disconnect
Reconnect/Disconnect
Reconnect/Disconnect
Size of Buffer
2K Bytes
2K Bytes
64K Bytes
64K Bytes
Host Transfer Rate
1.5 "Bytes/sec.
1.5 "Bytes/sec.
2.0 "Bytes/sec •.
2.0 "Bytes/sec.
"inilUl Interleave
1:1
1:1
1:1
1: 1
HOST
CHARACTERISTICS
I
PHYSICAL
CHARACTERISTICS
Physical Dilensions length: 8.75 inches
Width: 5.75 inches
Height: 0.50 inch"
len,th: 14.00 inches
Width: 7.00 inches
Height: 0.50 inch"
length: 7.50 inches
lIidth: 5.25 inches
Height: 0.50 inches
length: 7.50 inches
lIidth: 5.25 inches
Height: 0.50 inches
POler Supply
+5VDC I 1.5A (fLu)
+12VDC I 3001A ("ax)
+5VDC I 3.0A (~)
-12VDC I 0.6A ("II)
+5VDC I 1.5A '"ax)
+12VDt I O.lA '"ax)
+5VDC @1.5A ("ax)
+12YDC @O.IA '"ax)
Availabili ty
NOli
NOli
UI '86
HI '86
.800/100's
.480/100's
'5251100'5
DE" Price (U.S.)/DTY .560/100's
CD""ENTS
o
Calland Chaining and
Queueing Supported.
Peripheral Concepts
____
.~ _ _ _ _ _ _ •
COliand Chaining and
Queueing Supported.
PRODUCTS-4
_ _ .w _ _ _ _
~._
"
•• _ _ _
~.~
.---
. - - -. . . . . . . . . . . - - . . . - - - - , . . . . . . . - - - - - • •
1
.
,,'$ SC5
ADAPTIVE DATA SYSTEftS
INCORPORATED
ADAPTIVE DATA SYSTEMS
INCORPORATED
ADAPTIVE DATA SYSTEMS
INCORPORATED
ADVANCED STORAGE
CONCEPTS, INC.
PYTHON-II
SABER-II
RAPIER-I
ASC-S25
Tape Only
(1/4 inch Streller)
IU nchester Onl y
(5-1/4 inch)
lIinchester Only
(5-1/4 inch)
lIinchester Only
(5-114 inch)
Dri VI interfaci
DIC-36
ST506/412
ESDI (10
STS06l412
ftui_ I Drives
1 Tape
4 lIinchesters
4 lIinchesterl
2 IUnchesters
128 through 4,096
128 through 4,096
256 through 1,024
CIJTRflLER TYPE
DRIVE
CHARACTERISTICS
Stetar
.,
Sizes -Bytes Per DIC-11/24
~its/sec)
tee
Error Dttection
16-Bit cae
48-Bit Etc
48-Bit Etc
32-Bit
Error CarrICtiDl
Read-after-lirite
Doubl.-Burst/12 Bitl
Doubl.-Burst/12 Bits
Single-Burst/5 Bits
Flu Skipping
Block R....ite
Sector-level
Sectar-llVel
Sector-level
Level of SCSI
Reconnect/Disconnect
Reconnect/Disconnect
ReconnectlDisconnect
Reconnect/DiscDnnect
Size of Buffer
16K Bytes
64K Bytes
64K Bytes
320K Bytes (Cache)
Host Transfer Rate
2.0 "Bytes/sec.
2.0 lIBytes/sec.
2.0 "Bytes/sec.
1.5 "Bytes/sec.
hi
1:1
1:1
Length: 7.50 inches
lIidth: 5.25 inches
Height: 0.50 inches
Length: 8.00 inches
lIidth: 5.75 inches
Height: 0.75 inches
HOST
CHARACTERISTICS
(
"ini.UI·Interleavl MIA
PHYSICAL
CHARACTERISTICS
Physical Dillnsions Length: 7.75 inches
lIidth: 5.60 inches
Height: 0.50 inches
Power Supply
+5YOC • 1.5A (MOl)
+l2YDC •• 1A (101)
Availability
4D '85
~
• Length: 7.50 inches
lIidth: 5.25 inches
Height: 0.50 inches
+5YDC • 3.0A
Price (U.s.)/DTY $305/100'5
41 '85
41'SS
.295/100',
.3501100'5
.992/100',
COMNTS
Progralllble cache
parlleters
{
I
PRODUCTS-'
I
I
I
..
. . . .- ___.....,.__A$_._...........
_ _....
.~-_
(~)
Q Peripheral Concepts
... . ,.___
'"
._.,. . . --------..-.-.-.-.-.. . . . .
-~
--~.~-
...
----~~
SCS%
MMUFACTURER
A~
COftPUTERS,
INCORPORATED
AftPRO COtIPUTERS,
INCORPORATED
CENTAN CORPORATION
DATA TECHNOlO6Y
CORPORATION
IIODEL NUtlBER
Littll Baard/PLUS
Littll Board/l86
NBC-lOU
'20D/DB
CONTROLLER TYPE
Special
(Floppy/SCSI Port)
Special
(Floppy/SCSI Port)
Winchester Only
(3-112 inch)
llultifunctian
(Winchester/Floppy)
SA450/460 IIId
SCSI 6eneral-Purpose
SA4'0/460 IIId
SCSI 6eneral-Purposl
ST'06l412
ST506/412,
SA400/450, IIId
4 Floppies
4 Floppies
2 Winchesters
2 Winchesters and
2 Floppies
128 through 1,024
2" through 1,024
~6
'-
DRIVE
CHARACTERISTICS
Dri ve i nterflce
"axilul I Drives
Sector Sizes -Bytes 128 through 1,024
-
(
KDdak 3.3
through 1,024
Error Detection
16-Bit CRt (Floppy)
16-Bit CRC (Floppy)
32-Bit ECC
32-Bit ECC
Error Correction
N/A
M/A
Single-Burst/II Bits
Single-Burst/II Bits
Flaw Skipping
M/A
M/A
Track-level
Sector-level
Level of SCSI
Reconnect/Disconnect
Reconnect/Disconnect
XSASI
Single-Initiator
Size of Buffer
MIA
MIA
lK Bytes
lK Bytes
Hast Trlllsfer Rate
1.5 ttbytes/slc.
1.5 ttbytn/sec.
1.0 gytes/sec. '
2.0 "Bytes/sec.
"inilul Interleave
M/A
MIA
1:1
1:1
HOST
CHARACTERISTICS
,
PHYSICAL
CHARACTERISTICS
Physical Dieensians Length: 7.75 inches
Width: 5.75 inches
Height: 0.75 inches
Lenoth: 7.75 inches
Width: '.75 inches
Height: 0.75 inches
length: 5.75 inches
Width: 4.02 inches
Height: 0.50 inches
Length: 8.00 inches
Width: 5.75 inches
Height: 0.49 inches
Paler Supply
+5YDC • 950 IA ("ax)
+9-12YDC • 50lA (",x)
+5YDC • 950 IA ("ax)
+9-12YDC • 'OIA ("ax I
+5YDC • t.OA ("ax)
+5YDC @1.5A ("ax)
Avail abil i ty
NOW
NOW
NOlI
NOW
$424/IOO's
$135/100's
$286/100'5
COlplete Single-Board
COlputer with 128K and
CP"/BIOS
Calland COlpatible
with Xebec S1410A
OE" Price (U.S.l/GTY $297/100's
CO""EMTS
o
COlplete Single-Board
COlputer with 64K and
CP/"
PRODUCTS-6
Peripheral Concepts
b=z;;Qa.
vm
.. ·""WTO
.
griMM· eel' _ '
M.
t
a·· ••
SCSJ:
(
IlAMJFACTURER
DATA TECHNOl06Y
CORPORATION
DATA TECHIOL06Y
CORPORATION
DATA TECHNOlO6Y
CORPORATION
DATA TECHNOL06Y
CORPORATION
IIODE!. NII"BER
530D/DB
540D/DB
703
700
CQlTROLLER TYPE
ltul ti function
(Winchester/Tlpe)
ltultifunction
""1 ti function
(Wi nchester/Fl oppy/Tlpe) (Winchester/Floppy)
ltul ti function
(Winchester/Tape)
Drive interflce
S1506/412,
II1d GIC-02
ST506/412, SA400/450,
Kodlk 3.3, Ind GIC-02
SAI000/G2000,
and SABOO/B50
SAI000/G2000,
II1d QIC-02
"axilu. I Driyes
2 Winchesters and
I Tape
2 Winchesters, I Tlpe,
and 2 Floppies
4 Winchesters Ind
4 Floppies
4 Winchesters and
1 Tape
256 through 1,024
256 through 1,024
256 through 1,024
-
DRIVE
CHARACTERISTICS
Sector Sizes -Bytes 256 through 1,024
.
(
Error Detection
32-Bit ECC
32-Bit ECC
24-Bit ECC
24-Bit ECC
Error Correction
Single-Burst/II Bitl
Single-Burst/II Bits
Single-Burst/4 Bits
Single-Burst/4 Bits
Fla. SUpping
Sector-level
Sector-level
Track-level
Trlck-leYel
Leyel of SCSI
Single-Initiator
Single-Initiator
Single-Initiltor
Single-Initiltor
Size of Buffer
IK Bytes
lK Bytes
IK Bytes
lK Bytes
Host Transfer Rite
2.0 "Bytes/sec.
2.0 ltBytes/sec.
1.0 "Bytes/sec.
1.0 "Bytes/sec.
"inilUl Interlelve
1:1
1:1
2:1
2:1
HOST
CHARACTERISTICS
I
PHYSICAL
CHARACTERISTICS
Physical Dilensions Length: B.OO inches
IUdth: 5.75 inches
Height: 0.49 inches
Lelfgth: 8.00 inches
Width: '.75 inches
Height: 0.49 inches
Length: 13.50 inches
Itidth: 8.50 inches
Height: 0.49 inches
Length: 16.00 inches
Width: B.50 inches
Height: 0.49 inches
P01H!r Suppl y
+5YDC t 1.5A ("ax)
+5YDC t 2.0A ("ax)
+5YDC t 4.6A ("ax)
-5VDC t 500aA ("ax)
+5YDC t 4.6A ("ax)
-5YDC t 500.A ("ax)
Availabili ty
NOIt
NON
NON
NOIt
.440/100'.
.7671100'.
.793/100'5
DE" Price (U.S.)/GTY .360/100'1
CoMENTS
PRODUCTS-7
.,-..
"
------------
~--.~.
o
Peripheral Concepts
seSl:
-
"ANUFACTURER
DATA TECHNOLOGY
CORPORATION
DATA TECHNOLOGY
CORPORATION
DATA TECHNOlO6Y
CORPORATION
DATA TECHNOLOGY
CORPORATION
"ODEl NU"BER
510D/DB
510CU
515CD/515CU
S02C
CONTROllER TYPE
IUnchester Onl y
(5-114 inch)
lIinchester Dnl y
(5-1/4 inch)
lIinchester Only
(5-114 inch)
lIinchester Only
(5-1/4 Dr B inch)
Dri ve interface
ST506/412
~
"axi.u. I Drives
2 lIinchesters
2 lIinchesters
2 lIinchesters
4 Ninchesters
256
256
256 through 1,024
--
DRIVE
CHARACTERISTICS
Sector
(
-Bytes 256 through 1,024
Size~
Syste.s/Ioltga
-
D"A Syste.s/Io.ega (CU), ANSI
Honeywell Bull 520 (CD)
Iny,
~Ii.
L
Error Detection
32-Bit ECC
24-Bit ECC
24-Bit ECC
32-Bit ECC
Errc
Error Correction
Si ngl e-Burst/ 11 Bi ts
Single-Burst/4 Bits
Single-Burst/4 Bits
Single-Burst/S Bits
Err!
Flal Skipping
Sector-level
Track-level
Track-level
Track-level
f1a
level of SCSI
Single-Initiator
Single-Initiator
Single-Initiator
Reconnect/Disconnect
,
,
Le
Size of Buffer
lK Bytes
lK Bytes
lK Bytes
2K Bytes
i
Si
Host Transfer Rate
2.0 "Bytes/sec.
1.0 "Bytes/sec.
1.0 "Bytes/sec.
1.6 "Bytes/sec.
"ini.u. Interleave
1:1
2:1
2:1
1:1
HOST
CHARACTERISTICS
PHYSICAL
CHARACTER ISTICS
..
.
Physical Di.ensions length: S.OO inches
lIidth: 5.75 inches
Height: 0.49 inches
length: S.25 inches
IIi dth: S.OO inches
H.eight: 0.49 inches
length: 8.25 inches
lIidth: 8.00 inches
Height: 0.49 inches
Length: 8.00 inches
Nidth: 5.75 inches
Height: 0.49 inches
POllr Supply
+5VDC @t.OA ("ax)
+5VDC @2.0A ("ax)
+5VDC @2.0A ("ax)
+5VDC @2.6A ("ax)
Availabi Ii ty
NOli
NON
NOli
NOli
$287/100's
$287/100's
$500/100'5
DE" Price (U.S.)/QTY $247/100'5
CO""ENTS
I
o
Peripheral Concepts
PRODUCTS-8
• . ¢.-
scsx
IWIfACTURER
DATA TECHNOl06Y
CORPORATION
DATA TECHNOL06Y
CORPORATION
DISTRIBUTED PROCESSIN6
TECHNOL06Y
DISTRIBUTED PROCESSIN6
TECHNOL06Y
JIIII£L IlUflBER
S03C
801C
Pft-3010A/05
Pft-3010A/OS
comw.£RTYPE
IIi nchester onl y
(5-1/4 inch)
lIinchester Only
(S or 14 inch)
Floppy Only
(5-1/4 inch)
Floppy Only
(S inch)
ESDI
SftD (2.4 Ktgabytes/sec.) SA410/460
SA810/S60
4 lIinchesters
2 IIi nchesters
4 Floppies
4 Floppies
256 through 1,024
12S through 1,024
128 through 1,024
DRIVE
CHARACTERISTICS
Drivt interfiCt
~ilUl
I Drives
Sector.Sizes -Bytes 256 through 1,024
Error Detection
32-Bit ECC
32-Bit ECC
32-Bit ECC
32-Bit ECC
Error Correcti on
Single-Burst/S Bits
Single-Burst/8 Bits
Single-Burst/II Bits
Single-Burst/ll Bits
Flal Skipping
Track-level
Track-level
Sector-level
Sector-level
level of SCSI
Reconnect/Disconnect
Reconnect/Disconnect
Single-Initiator
Single-Initiator
Size of Buffer
2K Bytes
2K Bytes
512K Bytes (Cache)
S12K Bytes (Cache)
Host Transfer Rate
1.6 "Bytes/sec.
1.6 "Bytes/sec.
1.5 "Bytes/sec.
1.5 "Bytes/sec.
"inilul Interleave
1:1
1:1
1:1
1:1
Physical Dilensions length: 10.00 inches • length: 13.00 inches
lIidth: 5.75 inches
lIidth: S.OO inches
Height: 0.49 inches
Height: 0.49 inches
length: 12.50 inches
lIidth: 5.75 inches
Height: 0.50 inches
length: 12.50 inches
lIidth: 5.75 inches
Height: 0.50 inches
POler Suppl y
+5VDC • 2.6A ("ax)
+5VDC • 4.0A ("ax)
-5VDC t 500lA ("ax)
+SVDC • 4.0A ("ax)
+5VDC @4.0A ("ax)
Availability
NOli
NOli
4G 'S5
4(;1 '85
DE" Price (U.S.I/aTY $500/100'5
$700/100'5
$1000/100's
$1000/100'5
CO""ENT5
Supports Fixed and/or
Relovable Drives
Additional 2/4 "egabytes Additional 2/4 "'gabytes
of RA" available as an of RA" available as an
option.
option.
HOST
CHARACTERISTICS
PHYSICAL
CHARACTER ISTI CS
5 and to "egabits/stc.
versions available
PRODUCTS-9
o
Peripheral Concepts
SCSI
__......_'·.-d"d"I·...
r - - - - -.....
seSl:
rllAHUfACTURER
DISTRIBUTED PROCESSIN6
TECHNOL06Y
DISTRIBUTED PROCESSIN6
TECHNOL06Y
E!ULEI CORPORATION
~ULEI
CORPORATION
IIODEL HU"BER
P"-3010A/00
P"-3010A/50
TITLEIST "T02
CHMPION "D21-
CONTROLLER TYPE
Winchester Only
(O-inch)
Winchester Only
(5-1/4 inch)
TijIe Only
(1/4 inch Strealer)
Winchester Only
(5-1/4 inch)
Drivi interface
SAloo0
ST506/412
QIC-36
ESDI (10 "bit/sec)
"axilUl I Drives
4 Winchesters
4 Winchesters
1 TijIl
2 Winchesters
Sector Sizes
256 through 1,024
256 through 1,024
Per IUC-11124
256 and 512
Error Detection
32-Bit ECC
32-Bit ECC
16-Bit CRC
48-Bit ECC
Error Correction
Single-Burst/II Bits
Single-Burst/II Bits
Read-after-Write
Single-Burst/II Bits
Fli. Skipping
Sector-level
Sector-level
Block Re-wi te
Sector-level
Level of SCSI
Single-Initiator
Single-Initiator
Reconnect/Disconnect
Reconnect/Disconnect
Size of Buffer
S12K Bytes (Cache)
512K Bytes (Cache)
14K Bytes
14K Bytes
Host Transfer Rate
1.5 "Bytes/sec.
1.5 "Bytes/sec.
1.5 "Bytes/sec.
1.5 "Bytes/sec.
"inilul Interleave
1:1
1:1
M/A
1:1
DRIVE
CHARACTERISTICS
(
~Bytes
HOST
;CHARACTERI ST ICS
PHYSICAl
CHARACTERISTICS
.
Physical Dilensions Length: 12.50 inches
Width: 5.75 inches
Height: 0.50 inches
Length: 12.50 inches
Width: 5.75 inches
Height: 0.50 inches
Length: 0.00 inches
Width: 5.75 inches
Height: 0.50 inches
Length: 0.00 inches
Itidth: 5.75 inches
Height: 0.50 inches
Po.er Supply
+5YDC • 4.OA ("ax)
+5YDC • 4.OA ("ax)
+5YDC • 2.0A ("ax)
+12YDC @4001A ("ax)
+5YDC I 2.0A ("ax)
Availability
4Q 'OS
4Q '05
NOIt
NOIt
'1145/100'5
'435/100'5
$395/100'5
OE" Price (U.S.I/QTY '1145/100' s
COMENTS
{
I
Additional 2/4 "egabytes Additional 2/4 "egabytes
of RA" available as an of RA" available as an
option.
option.
PRODUCTS-l1
Differential SCSI I/O
option available.
Q
Peripheral Concepts
SCSI
E~EX
"ANUFACTURER
CORPORATION
FUJITSU A~RICA,
INCORPORATED
KOMAN CORPORATION
NCR CORPORATION
I
I
•
"ODEL NU"BER
ItEDAlI5T "DOl
"10~A
DJ210
ADP-41-o1-
CONTROLLER TYPE
Winchester Only
('-1/4 inch)
Winchester Only
(8 or 14 inch)
Itinchester Only
(3-112 inch)
ltul ti function
(Winchester/Floppy)
-..,I
-I.
I
I
I
I
DRIYE
CHARACTERISTICS
Dri ve interflce
"axilUl I Drives
I\
II
5T'06/412
2 Itinchesters
S~
(2.4 "egabytes/sec.) ST'06/412
ST506/412,
and SA400/450
4 Itinchesters
2 Itinchesters
Any cOlbination up to
4 Winchesters/Floppies
256 through 1,024
256 and 512
256 and 512
I
I
•
\
,i
I
I
Sector Sizes -Bytes 256 and 512
.
(
Error Detection
4B-Bit ECC
4B-Bit ECC
32 Bit ECC
56-Bit ECC
Error Correction
Single-Burst/II Bits
Single-Burst/II Bits
Single-Burst/II Bits
Single-Burst/It Bits
Flaw Skipping
Sector-level
Sector-level
Track-Level
Track-Level
Level of SCSI
Reconnect/Disconnect
Reconnect/Disconnect
XSASI
Reconnect/Disconnect
Size of Buffer
14K Bytes
lK Bytes
512 Bytes
512 Bytes
Host Transfer Rate
1.5 "Bytes/sec.
1.5 "Bytes/sec.
1.0
1.3 "Bytes/sec.
"inilul Interleave
1:1
1:1
1:1
1:1
I
HOST
CHARACTERISTICS
~ytes/sec.
,
PHYSICAL
CHARACTERISTICS
Physical Dilensions Length: B.OO inches
lIidth: 5.75 inches
Height: 0.50 inches
Length: 13.00 inches
IIidth: 7.70 inches
Height: 0.80 inches
Length: 5.75 inches
IIidth: 4.00 inches
Height: 0.50 inches
Length: 10.20 inches
Itidth: 5.75 inches
Height: 0.60 inches
Power Supply
+5VDC @2.0A ("ax)
+5VDC @5.0A ("ax)
-12YDC @1.0A ("ax)
+5VDC @0.9A ("ax)
+5YDC @2.6A ("ax)
Availability
NOli
NOIt
NOIt
NOli
$895/100's
$140/100'5
$497/100'5
DE" Price (U.S.)/QTY $395/100'5
CO""ENTS
{
o
- -_.
-,,-.---~--~.---
Differential SCSI I/O
option available.
Peripheral Concepts
2.4 "bytes/sec SCSI
transfer rate in
synchronous lode.
PRODUCTS-12
Differential SCSI I/O
Version also available.
seSl:
r..,ACTURER
NCR CORPORATION
NCR CORPORATION
NCR CORPORATION
NCR CORPORATION
IIIDEL IIU"BER
ADP-54-01
ADP-52-01
ADP-52-o2
ADP-41-04
a.TWER TYPE
Tape Only
(1/4 inch Strea.er)
Tape Only
Tape Only
Winchester Only
(1/2 inch 5/5, Strea.er) (1/2 inch 5/5, Strea.er) (5-1/4 inch)
Dri YI interfaci
IUC-36
PERTEC 9-Track PE,
Up To 1.25 "B/sec
PERTEC 9-Track PE,
Up To 1.25 "Blsec
ST506/412
llaJilUl I Drives
1 Tape
4 Tapes
4 Tapes
2 Winchesters
NIA
NIA
256 and 512
-
DRIVE
C*RACTERISTlCS
Stctor Sizes -Bytes Per IUC-11124
-
Error Detection
16-Bit CRC
Parity
Parity
56-Bit ECC
Error Correcti on
Read-after-Mrite
Single Track/I Bit
Single Track/I Bit
Single-Burst/II Bits
Fla. Skipping
Block Re-wite
Block Re-write
Block Re-llt'i te
Track-level
level of SCSI
Reconnect/Disconnect
Reconnect/Disconnect
Reconnect/Disconnect
Reconnect/Disconnect
Size of Buffer
M/A
64K Bytes
64K Bytes
512 Bytes
Host Transfer Rate
1.5 "Bytes/sec.
1.1 "Bytes/sec ...
1.1 "Bytes/set.
1.3 I'IBytes/sec.
"inilUi Interleave
N/A
N/A
N/A
I: 1
HOST
CHARACTERISTICS
(
~
PHYSICAL
CHARACTERISTICS
PhYSical Dillnsions Length: B.OO inches
Width: 5.75 inches
Height: 0.50 inches
length~ 12.00 inches
Width: 9.00 inches
Height: 0.60 inches
length: 12.00 inches
Width: 9.00 inches
Height: 0.60 inches
Length: 8.00 inches
Width: 5.75 inches
Height: 0.60 inches
Power Supply
+5YDC t 1.5A ("ax)
+12YDC t 200.A ("ax)
+5YDC t 5.0A ("ax)
+5YDC t 5.0A ("ax)
+5YDC t 2.6A ("ax)
Availabili ty
41l '85
NOW
NON
NOW
OE" Price (U.S.)/IlTY $4171100'5
$930/100'5
$930/100'5
$4071100'5
COI'I"ENTS
Single-Ended SCSI I/O
linn.
Differential SCSI I/O
Lines.
2-Board Set
I
PRODUCTS-13
(9 Peripheral Concepts
seSl:
"ANUFACTURER
NCR CORPORATION
NCR CORPORATION
SCIENTIFIC "ICRO
INCORPORATED
~DEl
ADP-41-o3
ADP-44-02
5200
5300
lIinchester Only
(5-114 inchl
lIinchester Only
(S or 14 inch)
ifill ti functi on
(llinchester/Floppyl
IfIllt if uncti on
Drive interface
ST506/412
S"D (1.2 ",gihytes/sec.) ST506/412,
and SA400/450/S00/S50
ST506/412,
and QIC-02
"axilUi I Drives
4 lIinchesten
4 lIinchesters
2 lIinchesters and
2 Floppies
2 Ninchesters and
1 Tape
Sector Sizes -Bytes 256 and 512
512 Bytes
256 through 1,024
256 through 1,024
Error Detection
56-Bit ECC
56-Bit ECC
32-Bit ECC
32-Bit ECC
Error Correction
Single-Burst/II Bits
Single-Burst/II Bits
Single-Burst/S Bits
Single-Burst/S Bits
Flaw Skipping
Tract-level
Sector-level
Track-level
Track-level
Level of SCSI
Reconnect/Disconnect
Reconnect/Disconnect
Single-Initiator
Single-Initiator
Size of Buffer
512 Bytes
512 Bytes
2J(
Host Transfer Rate
1.3 "Bytes/sec.
1.5 "Bytes/sec.
1.5 "Bytes/sec.
1.5 "Bytes/sec.
"inilul Interleave
1: 1
1:1
1:1
1:1
NU"BER
CONTROlLER TYPE
SYSTE~
SCIENTIFIC "ICRO
INCORPORATED
SYSTE~
-
(llinchester/Tapel
DRIVE
CHARACTERISTICS
-
(
HOST
CHARACTERISTICS
Bytes
SK Bytes
•
PHYSICAl
CHARACTERISTICS
Physical Dilensions Length: 10.20 inches
lIidth: 5.75 inches
Height: 0.60 inches
Length: 14.00 inches
lIidth: S.OO inches
Height: 0.60 inches
Length: S.OO inches
lIidth: 5.75 inches
Height: 0.75 inches
Length: 8.00 inches
lIidth: 5.75 inches
Height: 0.75 inches
Power Supply
+5VDC • 2.6A ("ax)
+5VDC • 5.0A ("ax)
-5VDC @1.2A ("ax)
+5VDC • I.SA ("ax)
+SVDC @I.SA ("ax)
Avai labi Ii ty
NOli
NOli
NOli
NOli
DE" Price (U.S.)/QTY $460/100'5
$SOO/100's
$262/100'5
$2621100'5
CO""ENTS
Differential SCSI I/O
Lines.
"odel 5201 supports the
Cipher 525 FloppyTape.
o
Peripheral Concepts
PRODUCTS-14
-----
see
IWIIfACTURER
SCIENTIFIC "ICRO 5Y5TE"5 SCIENTIFIC "ICRO 5YSTEftS SCIENTIFIC "ICRO SYSTEftS SCIENTIFIC "ICRO SYSTEftS
INCORPORATED
INCORPORATED
INCORPORATED
INCORPORATED
IIODEl Nl/llBER
7200
7300
5400
COXTROLLER TYPE
""I tifuncti on
(Winchester/Floppy)
"ul ti function
(Winchester/Tlpe)
flul ti function
tlul ti function
(Winchester/Floppy/Tape) (Winchester/Floppy/Tlpe)
Drive interflce
ST506/412, ESDI,
Ind SA400/450/800/S50
5T506/412, ESDI,
Ind QIC-02
5T506/412, 5A400/S00,
Ind QIC-02
ST506/412, ESDI,
SA400/S00, and QIC-02
ftarilUl I Drives
2 Winchesters and
2 Floppiel
2 Winch esters Ind
1 Tape
2 Winchesters Ind
1 Floppy
2 Ninchesters,
4 Floppies, 1 Tlpe
Sector. Sizes ·Bytes 256 through 1,024
256 through 1,024
256 through 1,024
256 through 1,024
Error Detection
32-Bit/48-Bit Etc
32-Bit/48-Bit ECC
32-Bit ECC
32-Bit/48-Bit ECC
Error Correction
5ingle-Burst/5-ll Bits
Single-Burst/5-11 Bits
Single-Burst/5 Bits
Single-Burst/5-11 Bits
Fla. Skipping
Sector-level
Sector-level
Trick-level
Trick-level
level of SCSI
Reconnect/Disconnect
Reconnect/Disconnect
Single-Initiator
Single-Initiator
Size of BuHer
2K Bytes
SK Bytes
SK Bytes
8K Bytes
Host Transfer Rate
2.0 "Bytes/sec.
2.0 "Byi'es/sec.
1.5 "Bytes/sec.
2.0 "Bytes/sec.
ftinilUl"lnterleave
1:1
1:1
1:1
1:1
length: 8.00 inches
Width: 5.75 inches
Height: 0.15 inches
length: S.OO inches
Width: 5.15 inches
Height: 0.15 inches
length: 8.00 inches
Width: 5.15 inches
Height: 0.75 inches
7400
DRIV£
CHARACTERISTICS
(
HOST
CHARACTER ISTICS
I
PHYSICAl
CHARACTERISTICS
PhYSical Dilensions Length: 8.00 inches
Width: 5.75 inches
Height: 0.75 inches
.
POller Supply
+5YDC • I.BA ("IX)
+5YDC • 1.8A ("ax)
+5YDC • 2.0A '"ax)
+5YDC I 2.0A '"ax'
Availability
4Q '85
4Q '85
NOW
4Q 'S5
$312/100'5
$335/100'5
$385/100'5
DE" Price (U.S.,/QTY $312/100'5
CO""ENTS
PRODUCTS-IS
Q Peripheral Concepts
--;: - ;. ___.,.............._.,.......
_-...-~
_ _ ....... --:.:0.._....-., •. .....
.A . • •
SCSI
"ANUFACTURER
SCIENTIFIC "ICRO SYSTE"S SCIENTIFIC "ICRO SYSTE"S SCIENTIFIC "ICRO SYSTE"S SCIENTIFIC "ICRO
INCORPORATED
INCORPORATED
INCORPORATED
INCORPORATED
FIID5001
3100
5100
5110
NU"BER
~DEl
SYST~
llul ti function
(llinchester/Floppy)
lIinchester Only
(5-1/4 inch)
lIinchester Only
(5-1/4 inch)
lIinchester Only
(3-1/2 inch)
Drive interflce
SAl000,
and SASOO/S50
ST506/412
ST506/412
ST506/412
",xilul • Drives
2 lIinchesters and
2 Floppies
2 lIinchesters
2 lIinchesters
2 IUnchesters
256 through 1,024
256 through 1,024
256 through 1,024
CONTROLLER TYPE
DRIVE
CHARACTERISTICS
Sector
(
Siz~es
-Bytes 121 through 1,024
Error Detection
32-Bit ECC
32-Bit ECC
32-Bit ECC
32-Bit ECC
Error CorrKtian
Single-Burst/6 Bits
Single-Burst/5 Bits
Single-Burst/5 Bits
Single-Burst/5 Bits
Flaw Skipping
Track-level
Track-level
Track-level
Track-level
level of SCSI
SASI (SAI403D)
Single-Initiator
XSASI
Single-Initiator
Size of Buffer
lK Bytes
2K Bytes
2K. Bytes
2K Bytes
Host Transfer Rate
1.0 "Bytes/sec.
1.5 lIBytes/sK.
1.5 "Bytes/sec.
1.5 "Bytes/sec.
"inilul Interleave
1:1
1:1
1:1
1:1
Physical Dillnsions Length: 13.10 inches
lIidth: 8.25 inches
Height: 0.15 inches
Length: S.OO inches
lIidth: 5.75 inches
Height: 0.15 inches
Length: 8.00 inches
lIidth: 5.75 inches
Height: 0.75 inches
Length: 4.00 inches
lIidth: 5.15 inches
Height: 0.75 inches
Paler Supply
+5VDC @5.0A ("ax)
+5VDC • I.SA ("ax)
+SVDC @1.IA '"ax)
+5VDC @150
Availability
NOli
NOli
NOlI
NOli
$200/100'5
$200/100'5
S200/100's
HOST
CHARACTERISTICS
PHYSICAL
CHARACTERISTICS
OE" Price (U.S.)/UTY $700/100'.
Calland COlpatible to
Xebec S1410A
CO""ENTS
( ) Peripheral Concepts
PRODUCTS-16
IA ("IX)
seSl:
r
C .,ACTURER
SCIENTIFIC "ICRO
INCORPORATED
SYSTE~
SY56EN CORPORATION
SY56EN CORPORATION
SY56EN CORPORATION
dEL NU"BER
7100
5C3011/5C3021
51536
5C2101/SC2111/5C2201
COOROlLER TYPE
Ninchester Only
'5-1/4 inch)
ltul ti functi on
(Ninchester/Tape)
"ul ti function
'Ninchester/Tape)
"ul ti function
'Ninchester/Tape)
Drive interface
S1506/412 and ESDI
ST506/412,
5M and
Archive 9045/Rossco.pI60 and 91C-02
IIxiaul • Drives
2 Ninchesters
2 Ninchesters and
1 Tape
2 Ninehesters and
1 Tape
4 Ninchesters and
1 Tape
256
256 and 512
256
DRIVE
CHARACTER ISTl CS
Sector Sizes -@ytes 256 through 1,024
(
ST506/412,
Tape: See CO""ENTS
Error Detection
32-Bit/48-Bit ECC
32-Bit ECC
32-Bit ECC
32-Bit ECC
Error Correction
Single-Burst/S,11 Bits
Single-Burst/S Bits
Single-Burst/S Bits
Single-Burst/5 Bits
Fla. Skipping
Sector-leYel
Tract-level
Sector-level
Track-ltvel
Level of SCSI
Reconnect/Disconnect
Single-Initiator
Reconnect/Disconnect
Single-Initiator
Size of Buffer
2K Bytes
8K Bytes
512 Bytes
256 Bytes
Host Transfer Rate
2.0 "Bytes/sec.
1.2 flbytes/sec.
1.25 "Bytes/sec.
1.0 "bytes/sec.
"inilUl Interleave
1:1
1:1
1:1
1:1
HOST
tHARACTERISTICS
•
PHYSICAL
CHARACTERISTICS
PhYSical Di.ensions Length: 8.00 inches
Nidth: 5.7S inches
Height: 0.75 inches
length: 14.00 inches
Nidth: 8.50 inches
Height: 0.7S inches
Length: 8.00 inches
Nidth: 5.75 inches
Height: 0.75 inches
length: 15.00 inches
Nidth: S.25 inches
Height: 0.75 inches
Potltr Supply
+5VDC @I.SA '"ax)
+SVDC @6.0A '"ax I
+5VDC @2.5A '"ax)
+5VDC @6.0A ("ax)
Availability
49 '85
NON
NOIt
NON
DE" Price 'U.S.)/QTY $250/100',
$1200/100'5
$500/100'5
$6751100'5
CO""£NTS
5C3011: Archive 9045/20B 512K Bytes of cache RA" SC2101 DEI 1190/1290,
5C3021: Rosseo.p 160
available as an option. SC2111 Archive 9020/45,
SC2201 DEI Slider SL-1.
PRODUCTS-17
o
Peripheral Concepts
seSl:
"ANUFACTURER
SYS6EN CORPORATION
SYS6EN CORPORATION
SYS6EN CORPORATION
WANGTEK
"ODEL NU"BER
SC2131
SC4000IR
SC3000
SCSI-36
CONTROLLER TYPE
Tipe Only
"ul ti function
(Winch/Digital Cassette) (1/4 inch Strealer)
Winchester Only
(8 or 14 inch)
Tape Only
(1/4 inch Strealer)
Dri ve interface
ST506/412,
and "FE COlpanion
QIC-02
S"D
QIC-36
"axilul I Drives
4 Winchesters and
1 TlPe (Cassette)
1 Tape
2 Winchesters
1 Tape
Sector Sizes -Bytes 256
Per QIC-11/24
256
Per QIC-11/24
Error Detection
32-Bit ECC
16-Bit CRt
32-Bit ECC
16-Bit CRC
Error Correction
Single-Burst/S Bits
Read-after-Write
Single-Burst/5 Bits
Read-after-Wri te
Flaw Skipping
Track-level
Block Re-write
Track-level
Block Re-write
Level of SCSI
Single-Initiator
Single-Initiator
Single-Initiator
Reconnect/Disconnect
Size of Buffer
256 Bytes
8K Bytes
8K Bytes
10K Bytes
Host Transfer Rate
1.0 PHlytes/sec.
1.0 "Bytes/sec.
1.2 PHlytes/sec.
1.5 "Bytes/sec.
"inilul Interleave
1:1
NIA
1:1
N/A
-
DRIVE
CHARACTERISTICS
.
(
HOST
CHARACTERISTICS
\
PHYSICAL
CHARACTERISTICS
Physical Dilensions Length: 15.00 inches
Width: 8.25 inches
Height: 0.75 inches
Length: 8.00 inches
Width: 5.75 inches
Height: 0.75 inches
Length: 14.00 inches
Width: 8.50 inches
Height: 0.75 inches
Length: 8.00 inches
Width: 5.75 inches
Height: 0.50 inches
Power Supply
+5VDC • 6.0A ("ax)
+5YDC • 1.5A ("ax)
+5VDC • 6.0A ("ax)
+5YDC @2.0A ("ax)
+12YDC @300lA ("ax)
Availability
NOW
NOli
NOli
NOli
$265/100's
$850/100'5
$5001100'5
DE" Price (U.S.)/QTY $675/100's
Supports QIC-24 and -11
Recording Forlats.
CO""ENTS
o
Peripheral Concepts
PRODUCTS-18
I
,
~"
..
~'
w._·" ..
".''' __
_ _ _ _ __
~~'''''''''''''_''''
seSl:
WESTERN DI6ITAL
CORPORATION
WESTERN DI6ITAL
CORPORATION
WESTERN DI6ITAL
CORPORATION
MESTERN DI6ITAl
CORPORATION
IIODEL NUttBER
MDI036R-SHD
MDI002S-SHD
MDl002-SHD
MDI003-SCS
CONTROLLER TYPE
Tipe Only
(1/4 inch Strelllr)
Minchester Only
(3-112 inch)
Minchester Only
(5-114 inch)
Minchester Only
(5-114 inch)
Drive interface
DIC-36
ST506/412
ST506/412
ST506/412
"axilUl I Drives
1 Tape
2 Minchesters
2 Minchesters
2 Minchesters
256 and 512
256 and 512
128 through 1,024
16-Bit CRt
32-Bit Etc
32-Bit Etc
32-Bit ECC
Error Correction
Read-after-tirite
Single-Burst/5 Bits
Single-Burst/5 Bits
Single-Burst/5 Bits
Flaw Skipping
Block Re-write
Track-level
Track-level
Sector-level
Level of SCSI
XSA5I
XSASI
XSASI
Reconnect/Disconnect
Size of Buffer
BK Bytes
512 Bytes
512 Bytes
lK Bytes
Host Transfer Rate
1.0 IIbYte/sec.
0.8 Qytes/sec.
O.B "Bytes/sec.
1.0 "Bytes/sec.
ftinilUi Interleave
NIA
2:1
2:1
1:1
( rllfACTURER
-
DRIVE
CHARACTERISTICS
Sector Sizes -Bytes Per DIC-11/24
. Error Detection
HOST
ciARACTERISTICS
(
.
•
PHYSICAL
CHARACTERISTICS
Physical Dilensions Length: 8.00 inches
Midth: 5.50 inches
Height: 0.75 inches
Length:' 5.75 inches
Midth: 4.00 inches
Height: 0.75 inches
Length: 8.00 inches
Midth: 5.75 inches
Height: 0.75 inches
Length: 8.00 inches
Midth: 5.75 inches
Height: 0.75 inches.
Power Supply
+5VDC • I.BA ("ax)
+12VDC • l00IA ("ax)
+5VDC • I.SA ("ax)
+5VDC • 1.5A ("ax)
+5VDC @1.5A ("ax)
+12YDC • 250lA ("ax)
Availability
NOli
NOli
NON
NOM
$175/100'5
$1751100's
$185/100'5
DE" Price (U.5.)/DTY $215/100'5
C~"ENT5
I
COlland cOlPatible with 3.5· version of
the NDI002-SHD for off- MDI002-5HD
line Backup.
PRODUCTS-19
o
Peripheral Concepts
.-
seal:
"ANUFACTURER
XEBEC CORPORATION
XEBEC CORPORATION
XEBEC CORPORATION
XEBEC CORPORATION
ItODEL NU"BER
51401
51420
51405
S1410A
CONTROLLER TYPE
Floppy Only
(5-14 or 8 inch)
flultifunction
(liinchester/Floppy)
lIinch!ster Only
(5-114 inch)
lIinchester Only
(5-1/4 inch)
Driv! interfic!
SA400/450/800/850
ST506/412,
ind SA400/450
ST506/412
5T506/412
"axi.u. I Driv!s
4 Floppies
2 Winchesters ind
2 Floppies
2 Winchesters
2 lIinchesters
Sector Sizes -Bytes 128 through 1,024
256 ind 512
256 ind 512
256 and 512
Error Detection
16-Bit CRe
32-Bit ECC
32-Bit ECC
32-Bit ECC
Error Correction
Non!
Singl!-Burst/ll Bits
Singl!-Burst/ll Bits
Si ngl e-Burst/ll Bi ts •
Fliw Skipping
Tuck-level
Trick-level
Track-level
Trick-level
Level of SCSI
XSASI
XSASI
XSA5I
XSASI
Size of Buffer
IK Bytes
512 Bytes
512 Bytes
512 Bytes
Host Trinsfer Rate
0.6 "Bytes/sec.
1.0 "Bytes/sec.
1.0 "Bytes/sec.
1.0 "Bytes/sec.
"ini.u. Interleiv!
1:1
3:1
3: 1
3:1
DRIVE
CHARACTERISTICS
HOST
CHARACTERISTICS
(
PHYSICAL
CHARACTERISTICS
•
Physicil Di.ensions Length: 8.00 inches
lIidth: 5.75 inches
Height: 0.60 inches
Length: 8.00 inches
lIidth: 5.75 inches
Height: 0.69 inches
Length: 8.00 inches
Width: 5.75 inches
Height: 0.75 inches
Length: 8.00 inches
lIidth: 5.75 inches
Height: 0.75 inches
Power Supply
+5YDC • 1.9A ("ax)
+12YDC I 20lA ("iX)
+5YDC • 2.0A ("ax)
+12YDC • 3.A ("ax)
+5YDC • 2.0A ("iX)
+12YDC • 50.A ("iX)
+5YDC I 2.0A ("ax)
+12YDC @50.A ("ax)
AViilability
NOli
NOli
NOli
NOli
S200/100's
S185/100's
S200/100's
DE" Price (U.S.)/UTY SI50/100's
CO""ENTS
o
Peripheral Concepts
PRODUCTS-20
_
..............---------"""'''''-.....--'...._-----.;.::,--_
......-.......".-1.--.·_ __ _
e _ _ _ _ _. - - - - -
j
•
seSl:
:IBM
<..
PC
I'IANUFACTURER
ADAPTEC, INCORPORATED
I
ADAPTEC, INCORPORATED
ADAPTEC, INCORPORATED
ARCHIYE CORPORATION
ftODEL MUftBER
ACB-2002
ACB-2002A
ACB-2010A
SC400
CONTROUER TYPE
Ninchester Only
(S-1/4 inch)
Ninchester Onl y
(S-1/4 inch)
Ni nchester Onl y
(S-1I4 inch)
Tape Only
(1/4 inch Strealer)
Drive inhrfice
STS06/412
STS06/412
STS06/412 and Hard
Sectored Relovables
OIC-36
ftaxilul I Drives
2 Ninchesters
2 Ninchesters
2 Ninchesters
1 Tape
Error Detection
32-Bit ECC
32-Bit ECC
32-Bit ECC
16-Bit CRC
Error Correction
Single-Burst/ll Bits
Single-Burst/II Bits
Single-Burst/II Bits
Block Rewrite
Fb. Skipping
Sector-level
Sector-level
Sector-level
Read-after-Nrite
ftinilul Interleave
2:1
2:1
2:1
MIA
ftodel Support
IBft-PC , PC/IT
IBft-PC, PC/IT
IBft-PC, PC/IT
IB"-PC
BIOS ROft
Ni thout BIOS
BIDS included
BIOS Included
BIOS included
Physical Dilensions Length: 13.00 inches
Nidth: 4.40 inches
Height: 0.75 inches
Length: 13.00 inches
Nidth: 4.40 inches
Height: 0.75 inches
Length: 13.00 inches
Nidth: 4.40 inches
Height: 0.7S inches
Length: 12.00 inches
lIidth: 4.00 inches
Height: 0.7S inches
Po.er Supply
+SYDC I I.SA (ftax)
+12YDC • l00IA (ftax)
-12VDC. 40lA ("ax)
+5VDC • 1.SA ("ax)
+12YDC • 1001A (ftax)
-12VPC. 401A ("ax)
+SYDC • 1.SA (ftax)
+12YDC • 100lA ("ax)
-12VDC t 40lA (ftax)
+SYDC @1.SA ("ax)
+12YDC @12SIA ("ax)
Avaibbili ty
NOli
NOli
NOli
$24S/100',
$2651100'5
I
ELECTRICAL
CHARACTERISTICS
(
PHYSICAL
CHARACTERISTICS
DE" Price (U.S.)/QTY $23S/I00's
CO""ENTS
o
•
Sile as ACB-2002A but
Nithout BIOS ROft.
Peripheral Concepts
Supports 01(-24 and
QIC-ll Recording Forlats
PRODUCTS-22
ZBM PC
r!
"acTUR£R
CEHTAN CORPORATION
DATA TECHNOL06Y
CORPORATION
DATA TECHHOL06Y
CORPORATION
DATA TECHHOL06Y
CORPORATION
. . NIIIIBER
NDC-5027
3251
5051
5091
CMrRIUER TYPE
Winchester Only
(5-1/4 inch)
Floppy Only
(5-114 inch)
Tape Only
(1/4 inch Streallt)
Tape Only
(1/4 inch Strealfr)
lJriYl illterface
ST506/412
SA400/450 and
Kodak 3.3
a1C-02 .
aIC-02
lui_ I Dri ves
2 Winchesten
2 Floppies
1 Tape
1 Tape
32-Bit ECC
16-Bit CRe
16-Bit CRt
16-Bit CRC
Single-Burst/l1 Bitl
Nane
Nane
None
Sector-level
NIA
Block-RlW'ite
Block-Rellrite
3:1
NIA
NIA
NIA
IBtI-PC, PCIIT
IBII-PC, PCIIT
18ft-PC, PCIIT
IBft-PC AT
BIOS included
BIOS included
BIOS included
BIOS included
Physical Ditensians Length: 8.00 inches
lIidth: 3.85 inches
Height: 0.50 inches
Length: 8.00 inches
Width: 3.85 inches
Height: 0.75 inches
Length: 13.3B inches
Width: 3.'10 inches
Height: 0.75 iRches
Length: 13.3B inches
Width: 3.'10 inches
Height: 0.75 inches
Poter Supply
+5YDC • 1.0A ("-x)
+5VDC • 2.0A (ftax)
+5VDC • 2.0A (ftax)
NOW
4a '85
4a 'B5
DEft Price (U.S.)/aTY $1351100's
$2091100'1
$185/100'5
$185/100'5
COftftENTS
Versions available far
Internal or External
Drives.
-
nECTRlCAL
~TERI5TICS
I£rrar Detection
.
Itrar Correction
IFhl
Ski ppi ng
~ni.u.
1'.
Interleave
J Support
IIOS ROt!
PHYSICAL
DlARACTERISTICS
+5YDC • 1.4A (ftax)
i
•
Availability
NOW
i
PRODUCTS-23
o
Peripheral Concepts
------
_-_._-·4--·~-
___ -. ,_. . "'. . -.. . . . -.. . . . -_._~
--.~
:IBM
"-----
PC
.• ,ANUFACTURER
DATA TECHNOlO6Y
CORPORATION
DATA TECHNOlO6Y
CORPDRATION
DATA TECHNOl06Y
CORPDRATION
DATA TECHNOlO6Y
CORPDRATION
"DDEl NU"BER
515081
515081E
5190
5250CI
CDNTROLLER TYPE
IUnchester Only
(5-1/4 inch)
lIinchester Only
(S-1/4 inch)
lIinchester Only
(5-114 inch)
"ultifunction
(lIinchester/Floppy)
Drive interface
ST5061412
ST506/412
ST506/412
ST506/412, SA400/4S0,
and Kodak 3.3
"axilul • Drives
2 IIi nchesters
2 Ninchesters
2 lIinchesters
2 Winchesters and
2 Floppies
Error Detection
24-8it ECC
24-Bit ECC
32-Bit ECC
24-Bit ECC
Error Correction
Single-Burst/4 Bits
Single-Burst/4 Bits
Single-Burst/l1 Bits
Single-Burst/4 Bits
Flaw Skipping
Track-level
Track-level
Sector-level
Track-level
"inilUl Interleave
2:1
2:1
2:1
2:1
IB"-PC, PC/IT
IB"-PC, PC/IT
IB"-PC AT
IB"-PC, PC/Xl
BIOS included
BIDS included
BIDS included
BIDS included
Physical Dilensions Length: 13.38 inches
lIidth: 3.90 inches
Height: 0.75 inches
length: 13.38 inches
lIidth: 3.90 inches
Height: 0.75 inches
length: 13.38 inches
Width: 3.90 inches
Height: 0.75 inches
length: 13.38 inches
Width: 3.90 inches
Height: 0.75 inches
Power Supply
+SVDC • 1.7A ("ax)
+SVDC @1.7A ("ax)
+5VDC @2.0A ("ax)
NOli
NOli
NDII
$195/100'5
$238/100'5
$295/100'5
For external Drives.
Supports Relovable
lIinchesters.
ELECTRICAL
CHARACTERISTICS
.
(
.:Idel Support
BIDS Ro"
PHYSICAL
CHARACTERISTICS
+5VDC @1.7A ("ax)
..
Ani labili ty
NDW
DE" Price (U.S.)/QTY $155/100'5
CD""ENTS
o
For internal Drives.
Peripheral' Concepts
PRODUCTS-24
rt
¢i'HiiM
eft
~~*-- ...... """"
"et
&';",
'i:;~~
N
r¥,-"tiAt ..
e'.
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ii5
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«
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IS·
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Sifr.~"''''~,
J:BM
[11ANUFACTURER
DATA TECHNOL06Y
CORPORATION
DATA TECHNOL06Y
CORPORATION
INTERPHASE CORPORATION
SCIENTIFIC "ICRO
INCORPORATED
ItODEL NUKBER
5290
5350
KAYERICK SftD PC-80
5510
CONTROLLER TYPE
""1 ti function
(ltinchester/Floppy)
ftul tif uncti on
(ltinchester/Tape)
Itinchester Only
(8 Dr 14 inch)
Itinchester Only
(5-114 inch)
Drive interface
ST506/412, SA400/4S0,
and Kodak 3.3
STS06/412 and
(UC-02
S"D (2.1 "egabytes/sec) STS06/412
KaxilUJ I Drives
2 Itincbesters and
2 Floppies
2 Wincbesters and
1 Tape
2 Wincbesters
2 Winchesters
Error Detection
32-Bit ECC
32-Bit ECC
32-Bit ECC
32-Bit ECC
Error Correction
Single-Burst/II Bits
Single-Burst/It Bits
Single-Burst/II Bits
Single-Burst/S Bits
Flaw Skipping
Sector-level
Sector-level
Track-level
Track-level
KinilUJ Interleave
2:1
2:1
1: 1
1: 1
( .. Support
IB"-PC AT
IBft-PC IT
IBK-PC , PC/XT, AT
IBK-PC, PCIXl
BIDS ROft
BIOS included
BIOS included
BIDS included
BIOS Included
Physical Diaensions Length: 13.38 incbes
Itidth: 3.90 inches
Height: 0.75 inches
Length: 13.25 inches
Width: 3.90 inches
Height: 0.94 inches
Lengtb: 13.13 inches
Itidth: 4.19 inches
Heigbt: 0.63 inches
Length: 5.50 inches
Width: 4.15 inches
Height: 0.75 inches
Power Supply
+SYDC @I.SSA ("ax)
+5YDC • 1.2A (Kax)
SYSTE~
ELECTRICAL
CHARACTERISTICS
.
PHYSICAL
CHARACTERISTICS
Availability
+5YDC @1.7SA ("ax)
NOIt
DEK Price (U.S.}/QTY $264/100'5
CO"KENTS
Supports Relovable
lIinchesters.
•
+SYDC @SOOIA ("ax)
NOIt
NOV
NOli
$428/100'5 .
$950/100'5
$150/100'5
Auto-Backup cOllands
BIOS ROns available
for Corona, Colulbii,
and Eagle PC's.
f,
PRODUCTS-25
o
Peripheral Concepts
PC
J:BM
(
PC
"ANUFACTURER
SCIENTIFIC "ICRO SYSTE"S SI6EN CORPORATION
INCORPORATED
SI6EN CORPORATION
SI6EN CORPORATION
IUIDEL NU"BER
5710
DC6
T-36
T-36"
CONTROlLER TYPE
ltul ti function
(Ninchester/Tape)
Ninchester Only
(5-1/4 inch)
Tape Only
(1/4 inch Strelllr)
Tape Only
(Digital Cassette)
Drive interface
ST506/412 and
QIC-02
ST506/412
QIC-36
ftE"TEC (Cassette)
Interface
"nilUl I Drives
2 Ninchesters and
1 Tapi
2 IIinchesterl
1 Tipe
1 Tape
Error DeteJ:tion
32-Bit ECC
32-Bit ECC
16-Bit CRe
16-8it CRC
Error Correction
Single-Burst/5 Bits
Single-Burst/5 Bits
M/A
N/A
Flaw Skipping
Tract-level
Sector-level
Bloct-ReWrite
Bloct-ReWrite
"inilul Interleave
1:1
1:1
N/A
M/A
"odel Support
IBHC, PC/Xl
IB"-PC, PC/Xl
18ft-PC, PC/XT, AT
IBHC, PC/XT, AT
BIOS RO"
BIOS Included
BIOS Included
BIOS Included
8IOS Included
Physical Dilensions Length: 5.50 inches
Nidth: 4.15 inches
Height: 0.75 inches
Length: 13.00 inches
Nidth: 4.00 inches
Height: 0.75 inches
Length: 5.50 inches
Nidth: 3.90 inches
Height: '0.75 inches
Length: 5.50 inches
Nidth: 3.90 inches
Height: 0.75 inches
Power Supply
+5VDC • I.SA ("ax)
+12VDC • 50lA ("ax)
-l~DC' 31A ("ax)
+5VDC • 0.6A ("ax)
+5VDC @0.6A ("ax)
+5VDC • 500lA ("ax)
411 'B5
NON
NOW
NON
DE" Price (U.S.)/IITY $2001100'5
$225/100',
$175/100'5
$175/100's
CO""ENTS
Contains NBS Data
Encryption circuitry.
Short-Slot fori factor
Short-Slot fori factor
-
ELECTRICAL
CHARACTERISTICS
(
PHYSICAL
CHARACTERISTICS
Availability
o
Peripheral Concepts
\
PRODUCTS-26
(
SUNOL SYSTEM
SI6EN CORPORATIOM
SUNOL SYSTEM
T-44
BLP-IBtlI
Tape Only
(1/4 inch Strtaler)
flul ti functi on
(Minchtster/Floppy)
flultifunctiDn
Tapt Only
(Minchtsttr/Floppy/Tape) (1/4 inch Strealer)
Drive interface
DIC-44 ITanbtrg)
5T5061412 and
ESDI 110 nbits/stc)
ST506/412, ESDI,
QIC-36 and SA450/460
QIC-36
!taxilUl I Drives
1 Tape
4 linchtsttrs and
2 Floppies
4 linchesttrs, 1 Tape,
and 2 Floppies
1 Tape
Error Dttection
16-Bit CRe
32-8it ECC
32-Bit ECC
16-Bit CRC
Error Correction
MIA
Single-Burst/II Bits
Singlt-Burst/!t Bits
Block Reltritt
Fla. Skipping
BIDct-ReNritt
Sector-Level
Sector-Levtl
Read-after-Irite
lIinilUl Interltavt
MIA
1:1
1:t
MIA
!todtl Support
IBII-PC, PC/XT, AT
IBtl-PC, PC/IT
1BII-PC , PC/XT, AT
8IOS ROil
BIDS Includtd
BIDS Included
BIOS Included
"_ACTURER
CONTROLLER TYPE
IAN6TEK
PC-36
ELECTRICAL
CHARACTERISTICS
(
BIOS Included
PHYSICAL
CHARACTERISTICS
" Length: 13.00 inches
Width: 4.50 inches
Height: 0.50 inches
length: 13.00 inches
lidth: 4.75 inches
Height: 0.75 inches
+5YDC • 1.5A IlIax)
+5YDC • 1.5A (lIax)
+5YDC @1.0A (lIax)
+12VDC @100lA (lIax)
4D '85
ID '86
NOli
$2951100'5
$395/100's
$9471100's
Supports IIFII or
2,7 RLL 17.5 IIbits/s).
Supports IIFII Dr
2,7 RlL (7.5 nbits/s).
Supports the QIC-24
Recording FDrlat.
PRODUCTS-27
o
PhYSical Dilensions Length: 5.50 inches- "Length: t3~00 inches
lidth: 3.90 inches
lidth: 4.50 inches
Height: 0.75 inches
Height: 0.50 inches
+5VDC @0.6A IlIax)
Availability
NOI
DEli Price (U.S.)/DTY $170/100'5
Short-Slot fori factor
I
Peripheral Concepts
. ____"._ ,__. - ,...1
1
·
:IBM
----_....
,.
...... ........_.
-,~-
~
PC
"ANUFACTURER
MESTERN DIGITAl
CORPORATION
MESTERN DIGITAL
CORPORATION
NESTERN DIGITAL
CORPORATION
NESTERN DI6ITAL
CORPORATION
"ODEl NU"IER
MD1002-MA2
MD1002-NAH
MDlOO2C-MI2
MD1002S-M12
CONTROLLER TYPE
ltultifunctian
(Minchastar/Floppy)
Minchester Only
(5-114 inch)
Minchester Only
(5-114 inch)
Minchester Only
(5-114 inch)
Drive interflCl
ST506/412 iIId
SA400/450
51506/412
S1506l412
ST506/412
"axilUi • Drives
2 Minchesters iIId
2 Floppies
2 Winchesters
2 Minchesters
2 Minchesters
Error Detac:tion
32-lit ECC
32-lit ECC
32-Bit ECC
32-Bit ECC
Error Correction
Single-Burst/5 Bits
Single-Burst/5 Bits
Single-Burst/II Bits
Single-Burst/II Bits
Flu Skipping
Track-level
Tract-level
Tract-level
Track-level
"inilUl Interleave
2:1
2:1
2:1
2:1
"ode! Support
11ft-PC AT
11ft-PC AT
IBft-PC, PC/IT
IBft-PC, PC/IT
BIDS RO"
Mithout BIDS
Mithout BIOS
BIDS Included
BIOS Included
Physicil Dilensions Length: 13.10 inches
Midth: 4.80 inches
Height: 0.75 inches
length: B.IO inches
Midth: 4.20 inches
Height: O.~O inches
length: 8.10 inches
lIidth: ~.20 inches
Height: 0.50 inches
Length: 5.7S inches
IUdth: 4.20 inches
Height: O.SO inches
Pcnter Supply
+SVDC • 2.SA (ftax)
+12VDC • ISOlA (ftax)
-12YDC. lOlA ("ax)
+SVDC • I.SA (ftax)
+12VDC • SOIA (ftIX)
+SVDC • 1.0A (ftIX)
+12VDC • SOIA (ftIX)
+SVDC • I.OA (ftax)
+12VDC • SOIA (ftax)
NOli
NOli
NOW
4D '85
DEft Price (U.S.)/DTY $2301100'5
$200/100's
$1501100'.
$1 SOI1 00' 5
COftftENTS
lIinchester-only version Short-Slot COlpatible Short-Slot COlpatible
of WD1002-WA2.
with Bad Block "apping/
Auto-Configure "odes.
-
ElECTRICAL
CHARACTERISTICS
(
PHYSICAL
CHARACTERISTICS
Avail abil i ty
o
Supports 4 different
Floppy Data Ratas.
~
Peripheral Concepts
- - - - - - - , _ .. _ - - - - -
---..... -----~--,~--'.-'------'-.-='="'--=,,--'- ,--'-'.
PRODUCTS-2B
---_._._._-
~----
At........ .
IlANUFACTURER
WESTERN DI6ITAl
CORPORATION
NEsTERN D16ITAL
CORPORATIOM
tlEsTERN D16ITAl
CORPORATION
lEBEC CORPORATION
IlllDEl HIJ"BER .
IfD1 003A-IIA2
liD 1003A-1IAH
IIDI036s-1112
sI210A
CONTROLLER TYPE
Jtul ti function
(liinchester/Floppy)
lIinchester Only
(5-1/4 inch)
Tape Only
(1/4 inch Streater)
lIinchester Only
(5-1/4 inch) .
(
ELECTRICAL
CHARACTERISTICS
Drive interface
STS06l412 and
Relovables
5T506/412 and Relovables ST506/412 and Rtlovables aIC-36
SA400/4S0
"axilUl • Drives
2 Ifinchesters and
2 Floppies
2 lIinchesters
I Tape
2 Ninchesters
Error Detection
32-Bit ECC
32-Bit Etc
l6-Bit CRt
32-Bit EtC
Errar Correction
Single-Burst'S Bits
Single-Burst/S Bits
Block Rewite
Single-Burst/It Bits
Fla. Skipping
Track-level
Track-level
Read-after-lirite
Track-level
"inilUl Interleave
1:1
hi
MIA
2:1
""del Support
18"-PC AT
11ft-PC AT
11ft-PC, PC/Xl, AT
8IDS ROft
Without BIDS
lIithout BIDS
lIithout BIOS
.
lIithout BIDS
PHYSICAL
CHARACTERISTICS
Physical DiltRsians length: 13.10 inches
Width: 4.80 inches
Height: 0.7S inches
. length: B.l0 inches
lIidth: 4..20 inches
Height: 0.50 inches
. lenlJth: 8.10 inches
lIidth: 4.20 inches
Height: 0.75 inches
length: 13.13 inches
lIidth: 4.20 inches
Height: 0.8S inches
Po.er Suppl y
+5VDC t 2.5A (ftax)
+12VDC t ISOlA ("ax)
-12VDC t lOlA ("ax)
+SYDC t 1.5A ("ax)
+t2YDC • SOIA ("ax)
+5YDC • 1.0A ("ax)
+l2YDC @301A ("ax)
+SYDC I 1.2SA ("ax)
+12YDC I ISlA ("ax)
Avail abi Ii ty
la '86
NOli
NOli
NOli
$190/1oo's
.21S/100's
ti8S/100's
DE" Price (U.S.I/aTY $240/100'5
Rll option available
Supports the QIC-24
Recording Forlat.
I
I
{
PRODUCTS-29
r
o
Peripheral Concepts
~"-
. .,.-. . . . .,,,.--.. . .-
----~
...
~-·---li--
..-
%BM PC
XEBEC CORPORATION
tlANUFACTUR£R
XEBEC CORPORATION
XEBEC CORPORATION
lEBEC CORPORATION
'-
IIODEL NU"BER
S1220
S1240
SI250
51255
CONTROLLER TYPE
"ultifundion
(Winchester/Floppy)
Iii nchester Onl y
'5-1/4 inch)
"'Itifunction
'Winchester/Floppy)
IUnchester Only
'5-1/4 inch)
Dri ve interface
ST506/412 and
SA460
ESDI '10
ST506/412 and
SA460
ST506/412
"axilul • Drives
2 Winchesters and
2 Floppies
4 Winchesten
2 Winchesters and
2 Floppies
4 Wi nchesters
Error Detecti on
32-Bit ECC
32-Bit ECC
32-Bit ECC
32-Bit ECC
Error Correction
Single-Burst/II Bits
Single-Burst/II Bits
Single-Burst/II Bits
Single-Burst/II Bits
Fla" Skipping
Track-level
Track-level
Track-level
Track-level
"inilul Interleave
1:1
2:1
2:1
2:1
"ode} Support
IB"-PC, PC/IT
IB~PC
BIOS RO"
Without BIOS
Nithout BIOS
Nithout BIOS
Nithout BIOS
Physical Dillnsions Length: 13.00 inches
Width: 7.20 inches
Height: 0.75 inches
Length: 13.13 inches
Nidth: 4.20 inches
Height: 0.b5 inches
Length: 13.13 inches
Width: 4.20 inches
Height: 0.85 inches
Length: 13.13 inches
Width: 4.20 inches
Height: 0.85 inches
Power Supply
+5VDC • 3.00A '"ax)
+12VDC • 6611 '"ax)
+5VDC @1.25A '"ax)
+12VDC • 151A '"ax)
+5VDC • 1.25A '"ax)
+12VDC • ISlA '"ax)
+5VDC • 1.25A '"ax)
+12VDC @ISlA ("ax)
Avail abi li ty
NOW
4Q
NON
NOW
$2501100'5
$250/100'5
ELECTRtCAL
CHARACTERISTICS
~its/sec.)
~
(
AT
IB~PC
AT
IB"-PC AT
PHYSICAL
CHARACTERISTICS
DE" Price 'U.S.)/QTY $2001100'5
'85
$250/100'5
CO""ENTS
o
Peripheral Concepts
PRODUCTS-30
~
___"-""'6_.......
- ..........
:~_",
ftft.-...-.--
..· . , , , ,
"-'-~"-"'·-*,""·_"'·_"':'-h;'
_
,£e"e
"1"
't'~*,J'"4'
ii&s'fth
....
H/A
f"'IIIJFACTURER
ADAPTEC, INCORPORATED
ADAPTIVE DATA SYSTE"S
INCORPORATED
DATA TECHNOLOGY
CORPORATION
DATA TECHNOLOGY
CORPORATION
IIODEl NU"BER
AHA-1530
PC "Ister link
"odel 10
"odel 10-1
Host Bus Type
"ul tibus I
IBn PC, PCIXl
5-100
S-100
Host Futures
Supports S Tasks/S LUN's Supports D"A and
and Concurrency
progralled 110 "odes
HOST
CHARACTERISTICS
Supports Progralled 110 Supports Progralled 110
and DnA lodes
SCSI
.
CHARACTERISTICS
Level of SCSI
ReconnfCtJDisconnect
Reconnect/Disconnect
Single-Initiator
Single-Initiator
SCSI Trlnsfer Rite
1.5 ftegabytes/sec.
1.5 "egabytes/sec.
1.0 "egabytes/sec.
1.0 "egabytes/sec.
Physicil Dilensions length: 12.00 inches
Width: 6.75 inches
Height: 0.50 inches
length: 10.00 inches
IIi dth: . 4.20 i ncheli
Height: 0.80 inches
Length: 10.00 inches
Ihdth: ..5.25 inches
Height: 0.50 inches
length: 10.00 inches
Width: 5.25 inches
Height: 0.50 inches
POller Supply
+5VDC @2.0A ("IX)
+5YDC @2.SA
+8YDC @1.4A (Max)
+SVDC @I.SA ("ax)
Availabil i ty
Q1 86
NOIt
NOli
Nolt
DE" Price (U.S.)
1460
$250 .
$195
$225
CO""ENTS
"ailbox CO'lunications
lIith Host
Parity Supportl
Differentill Version
AVlilable.
PHYSICAL
CHARACTERISTICS
("~)
•
PRODUCTS-31
( ) Peripheral Concepts
H/A
(
DATA TECHNOLOGY
CORPORATION
"ANUFACTURER
DATA TECHNOLOGY
CORPORATION
DATA TECHNOLOGY
CORPORATION
DATA TECHNOLOGY
CORPORATION
-
"ODEl NU"BER
"odel 11
"odel 11-2
"odel 12
"odel 51
Host Bus .Type
gSus
gSus
Unibus
IS"-PC, PC/IT
Host Features
Contains Twa D"A
Channels
Supports up to
8 SCSI Targets
Level of SCSI
Single-Initiator
Single-Initiator
Single-Initiator
Single-Initiator
SCSI Transfer Rate
1.0 "egabytes/sec.
1.0 "egabytes/sec.
1.0 "egabytes/sec.
1.0 "egabytes/sec.
Physical Di.ensions Length: B.40 inches
Width: 5.20 inches
Height: 0.50 inches
Length: 8.40 inches
Width: 5.20 inches
Height: 0.50 inches
Length: 16.00 inches
Width: 9.00 inches
Height: 0.50 inches
Length: 8.00 inches
Ihdth: 3.90 inches
Height: 0.50 inches
Po.er Supply
+5VDC @2.0A ("ax)
+5VDC @2.0A ("ax)
+5VDC @2.0A ("ax)
+5VDC @1.0A ("ax)
Availability
NON
NON
NON
NOW
DE" Price (U.S.)
$395
$395
$828
$190
CO""ENTS
Co.pati ble .i th
LSI-l1/03, 11/23.
HOST
CHARACTERISTICS
SCSI .
CHARACTERISTICS
(
PHYSICAL
CHARACTERISTICS
\
~
o
PRODUCTS-32
Peripheral Concepts
\
I
II
:,
H/A
"ANUFACTURER
DATA TECHNOLOGY
CORPORATION
DATA TECHNOLOGY
CORPORATION
DATA TECHNOLOGY
CORPORATION
DATA TECHNOLOGY
CORPORATION
"ODEl NU"BER
"odel 68
"odel 69
"odel 75
"odel 75-1
EXORti sor II
YERSAbus 68000,
IB" Syste. 9000
Apple II/II+/Ile
Apple II/II+/IIe
Supports DOS 3.3
Supports DOS 3.3
and ProDDS
HOST
CHARACTERISTICS
Host Bus Type
Host Features
~
SCSI .
CHARACTERISTICS
(
level of SCSI
Single-Initiator
Single-Initiator
Single-Initiator
Single-Initiator
SCSI Transfer Rate
1.0 "egabytes/set.
1.0 "egabvtes/sec.
1.0 "egabvtes/sec.
1.0 "egabytes/sec.
Physical Di.ensions length: 9.75 inches
Width: 5.50 inches
Height: 0.50 inthes
length: 14.50 inches
Width: 9.24 inthes
Height: 0.50 inthes
length: 7.00 inches
Width: 3.05 inthes
Height: 0.50 inches
length: 7.00 inches
lIidth: 3.05 inches
Height: 0.50 inthes
POller Supp IV
+5YDC @1.0A ("ax)
•
+5YDC @2.8A ("ax)
+5YDC @0.5A ("ax)
+5YDC @O.SA ("ax)
Availabi Ii tv
NOli
NOli
NOli
NOli
DE" Prite (U.S.)
5350
5580
5140
5158
PHYSICAL
CHARACTERISTICS
COIIKENTS
-
PRODUCTS-33
Q
Peripheral Concepts
«
#-M"-.•
H/A
DATA TECHNOLOGY
CORPORATION
DATA TECHNOLOGY
CORPORA TI ON
DATA TECHNOLOGY
CORPORATION
E"ULEX CORPORATION
"odel 75-2
"odel 86
"odel 86-1
IB"Ol
Host Bus Type
Apple II/II+/IIe
~ltibus
Host Features
Supports DOS 3.3
and ProDOS
Supports variable
She Blocks
Supports up to
Eight SCSI Targets
Up to 2.0 licrosec/byte
D"A Transfers
Level of SCSI
Single-initiatDr
Single-Initiator
Single-Initiator
RecDnnect/Disconnect
SCSI Transfer Rate
1.0 "egabytes/sec.
1.0 "egabytes/sec.
1.0 "egabytes/sec.
1.5 "egabytes/sec.
Physical Dilensions Length: 7.00 inches
lIidth: 3.05 inches
Height: 0.50 inches
length: 12.00 inches
lIidth: 6.75 inches
Height: 0.50 inches
Lengtll: 12.00 inches
lIidth: 6.75 inches
Height: 0.50 inches
Length: 8.00 inches
lIidth: 3.90 inches
Height: 0.50 inches
Palter Supply
+5VDC @O.SA ("ax)
+5VDC • 2.0A ("ax)
+5VDC @2.0A ("ax)
+5VDC @1.lA ("ax)
Availability
NOli
NOli
NOli
NOIt
DE" Price (U.S.)
$195
$270
$270
$395
CO""ENTS
FCC Approved External
"ating Connector.
"ANUFACTURER
"ODEL NU"BER
-
HOST
CHARACTERISTICS
I
~ltibus
I
IB"-PC, PC/IT
SCSI
CHARACTERISTICS
(
PHYSICAL
CHARACTERISTICS
\
o
.
Also Available lIithout
BIOS RO".
PRODUCTS-34
Peripheral Concepts
H/A
"ANUFACTURER
~DEL
NU"BER
E"ULEX CORPORATION
E"ULEX CORPORATION
E"ULEX CORPORATION
FORCE CO"PUTERS
UCOllLX
UC03
UC13
SYS68K/SASI-l
Qbus
Qbus
Unibus
vtlEbus
HOST
CHARACTERISTICS
Host Bus Type
.
E.uIates t.o RLYll/12
Controllers
Elul ates I1SCP
Level of SCSI
Reconnect/DiscDnnect
SCSI Transfer Rate
Host Features
Elulates "SCP
Provides Four D"A
Channels
~econnect/Disconnect
Reconnect/Disconnect
Reconnect/Disconnect
1.5 ",gabytes/sec.
1.5 "egabytes/sec.
1.5 "egabytes/sec.
1.5 "egabytes/sec.
Standard Qbus
Single Quad-size,
Standard Qbus
Single Hex-size,
Standard Unibus
Length: 9.20 inches
IIidth: 6.30 inches
Height: 0.80 inches
POler Suppl y
+SYDC @5.7A ("ax)
tSVDC @4.BA ("ax)
+5YDC @4.BA ("ax)
tSYDC @2.IA ("ax)
t12VDC @100.A ("ax)
-12VDC @100.A ("ax)
Availabili ty
NOli
NOli
NOli
NOli
OE" Pri ce 10. S. )
$1,500
$1,BOO
$2,200
$1,3BO
~
SCSI
CHARACTERIST1CS
(
PHYSICAL
CHARACTERISTICS
Physical Diensions
~"ENTS
\
COlpatible .i th
PDP-l1/04 thru 11/70,
LSI-II and "icroPDP-ll. YAX-11/730/7S0/7BO.
Contains RS-232 port
for Debug and
Diagnostics lode.
-
PRODUCTS-35
(9 Peripheral Concepts
,i ,
H/A
PlANUFACTURER
INTEGRATED SOLUTIONS
INCORPORATED
PlIZAR, INCORPORATED
NCR CORPORATION
NCR CORPORATION
PlODEL NUPIBER
VPlE-SCSI
VPlEB500
ADP-31A-Ol
ADP-32-01
Host Bus,Type
VPlEbus
VPlEbus
IBPI-PC, PC/IT
Plulti bus I
Host Features
B-Block Data Buffer
Capacity
Provides Two Vectored
Interrupts
Supports DPIA transfer
Plode.
Up to B Concurrent
1/0 operati Dns
Level of SCSI
Single-Initiator
Single-Initiator
Reconnect/Disconnect
Reconnect/Disconnect
SCSI Transfer Rate
1.2 Plegabytes/sec.
1.0 Plegabytes/sec.
1.1 Plegabytes/sec.
1.5 Plegabytes/sec.
length: 7.08 inches
Width: 4.20 inches
Height: 0.60 inches
Length: 12.00 inches
Width: 6.75 inches
Height: 0.60 inches
+5YDC @0.6A (Plax)
+5YDC @3.0A (Plax)
HOST
CHARACTERISTICS
I
SCSI .
CHARACTERISTICS
.
(
PHYSICAL
CHARACTERISTICS
Physical Dilensions Length: 9.20 inches
Nidth: 6.30 inches
Height: 0.80 inches
, Length: 9.20, inches
Nidth: 6.30 inches
Height: 0.75 inches
Power Supply
+5YDC @3.1A (Plax)
• (Plax)
+5YDC @0.55A
Availability
NOIt
NON
NON
NOlf
OEPI Price (U.S.)
$1,200
$350
$2BO
$620
COIIIIENTS
Autolatic Defect
And Bad Block Skipping
NCR ROil BIOS version
is ADP-31A-02.
Li nes.
~
o
PRODUCTS-36
Peripheral Concepts
Single-ended SCSI 110
JlAllllfACTURER
NCR CORPORATION
PEP
WJDEI. NUftBER
ADP-32-02
VDIO
~DUlAR
CO"PUTER
PlESSEY "ICROSYSTE"S
SCIENTIFIC "ICRO SYSTEftS
INCORPORATED
PtIE SASI-l
:510
(
HOST
CHARACTERISTICS
I
-
Host Bus Type
ftultibus I
VtlEbus
Y"Ebus
Host Features
Up
to 8 Concurrent
I/O operati ons
DftA and Poll i ng
"odes Supported
Provides Four DftA
Channels
Level of SCSI
Reconnect/Disconnect
Single-Initiator
Single-Initiator
Single-Initiator
SCSI Transfer Rate
1.:5 ftegabytes/sec.
1.:5 "egabytes/sec.
1.0 "egabytes/sec.
1.:5 ftegabytes/sec.
Physical Di.ensions length: 12.00 inches
Nidth: 6.7:5 inches
Height: 0.60 inches
Length:
Nidth:
Length: 9.20 inches
Nidth: 6.30 inches
Height:. 0.7:5 inches
Length: :5.50 inches
Nidth: 4.1:5 inches
Height: 0.7:5 inches
Power Suppl y
+5YDC I 1.0A ("ax)
+:5YDC I 1.BA ("ax)
+12YDC • 300.A· I"ax)
-12YOC I 30011\ I"ax)
+5YDC I 500.A ("ax)
NOI
NOli
$1,077
$90
Contains an RS-232C
Port for Diagnostics.
Socket provided for
BIOS ROft
SCSI
CHARACTERISTICS
IB"-PC, PC/IT
~
'HYSICAL
CHARACTERISTICS
+5YDC I 3.0A ("ax)
100 ••
160 ••
I
Availability
NOI
NON
OE" Price (U.S.)
$685
$313
CO"ftENTS
Differential SCSI 110
lines.
.
o
PRODUCTS-37
Peripheral Concepts
I
-
• . - - . - - ...
--....,.--~I _.._... ~~ ....
-
.....
- •. <1"
.11., .... ';;::
w .. 'It~,...*'!'......:_.. ~
C4S#;.H""
IS ......
> ....
os (
N:
4
II
•.
- - - , . - . - - _..
-.~.- ~"
...
j
H/A
(
"ANUFACTURER
S16~ INFORIIATION
SYSTEtIS
TD SYSTEIIS,
INCORPORATED
XEBEC CORPORATION
XEBEC CORPORATION
"ODEl NUIIBER
SDC-RLY112
TDl-12
Apple Adapter
IB"-PC Adapter
Hast Bus T.ype
Dbus
Qbus
Apple II+lUe
IBII-PC
Hast Featurts
Supports lixed capacity ElUlates DEC RLY
RLOI or RL02 drives
Supports DDS 3.3, ProDOS D"A or Progralled 110
and trIll
"odes Supported
Single-Initiator
Reconnect/Disconnect
XSASI
XSASI
1.0 lIegabytes/sec.
1.5 ftegabytes/sec.
1.0 !legabytes/sec.
1.0 "egabytes/sec.
Physical Dillnsions Single dual-wide,
Standard Dbus
DUll-wide,
Standard Dbus
Length: 6.50 inches
IIidth: 3.10 inches
Height: 0.75 inches
length: B.73 inches
lIidth: 4.23 inches
Height: 0.60 inches
Power Supply
+5YDC • 3.7SA (lIax)
+5YDC • 5.0A ("ax)
+5YDC • 6261A (lIax)
+5YDC • 1.0A ("ax)
Availability
NOli
NOli
NOli
NDII
.90
.90
HOST
CHARACTERISTICS
SCSI .
CHARACTERISTICS
level
of
SCSI
SCSI Transfer Rate
(
PHYSICAL
CHARACTERISTICS
I
.
DEft Price (U.S.)
.1,025
.695
CO""ENTS
Supports 51410, ACB4000, Dr 2OC/2OL
COlpatible with standard
DEC Rl bootstraps.
o
PRODUCTS-38
Peripheral Concepts
-Boatable" (contains
BIDS ROil).
L.SX
r
ADAPTEC, INCORPORATED
ADAPTEC, INCORPORATED
ADAPTEC, INCORPORATED
ADAPTEC, INCORPORATED
PART NU"BER
AIC-Ol0
AIC-Ol0
AIC-loo
AIC-250
fUNCTION
Controller Chip
Controller Chip
Winchester Controller
Encoder/Decoder
features
Prograllable, General
Purpose Controller
Prograllable, General
Purpose Controller
NRZ Data Input, 8-Bit
Parallel "PU Interface
NRZ to/frol !'IF"
Convertor
Clock/Dah Rite
24 "Hz
5/10115 "Hz
10 "Hz
500KHz to 10 "Hz
C"OS
CJlOs
Silicon Gate N"Os
Silicon Gate N"OS
.fACTURER
ELECTRICAL
CHARACTERISTI CS
Technology
-
PHYSICAL
CHARACTERISTICS
( .tckage Size
40-Pin Dual-in-line and 40-Pin Dual-in-line and 40-Pin Dual-in-line
44-Pin PlCC
44-Pin PlCC
24-Pin Dual-in-line
Power Supply
+5VDC +/-5%
+5VDC +/-5%
+5VDC +/-5%
+5VDC +/-5%
Telperature Range
o to 70 t.
o to 70 t.
o to 70 C.
o to 70 C.
NOW
NOW
NON
DE" Price IU.S.)/QTY $115.0012,500
$50.0012,500 (10"hz)
'65.00/100'5
$16.25/100' 5
COH"ENTS
'RO"-less' version
of the Alt-l00.
Availability
,
HI '86
PRODUCTS-39
Requires external
VeO/Phase Lock Loop.
o
Peripheral Concepts
L.ax
,
;1ANUFACTURER
ADAPTEC, INCORPORATED
ADAPTEC, INCORPORATED
ADAPTIVE DATA
INCORPORATED
PART NUKBER
AIC-270
AIC-300
ADS-l 000
ADS-3570
FUNCTION
Encoder/Decoder
Buffer Cantroller
Winchester Cantroller
Buffer "anager and
SCSI support Logic
Features
NRZ to/frol RLL (2,7)
Convertor
Converts Static R~ into Generic ~U interface/
a Dual-Ported FIFO
48-Bit ECC
Clock/Data Rate
500KHz to 10 KHz
10
Silicon Gate NftOS
Package Size
SYSTE~
ADAPTIVE DATA
INCORPORATED
SYSTE~
f
ELECTRICAl
CHARACTERISTICS
256K addressing Mith
4 Ports
24 flhz
15 Ithz
Silicon Gate I"OS
CKGS
CKOS
24-Pin Dual-in-line
40-Pin Dual-in-Line
68-Pin PLCC
68-Pin PLCC
Power Supply
+5VDC +/-5%
+5VDC +/-5%
+,VDC +/-5%
+5VDC+/-5%
Telperature Range
o to 10 C.
o to 70 C.
o to 10 C.
o to 10 C.
Availability
NOW
NOli
•
•
~
Technology
PHYSICAl
CHARACTERISTICS
(
DE" Price (U.S.)/QTY $23.50/100'5
CO""ENTS
o
Requires external
VCO/Phase Lock Loop.
Peripheral Concepts
,
•
$21.25/100's
Supports RA" sizes frol t Factory direct only
through lanufacturing
256 to 64K Bytes.
license.
PRODUCTS-40
t Factory direct only
through lanufacturing
license.
I
LSX
"ANUFACTURER
ADAPTIVE DATA SYSTE"S
INCORPORATED
ADAPTIVE DATA
INCORPORATED
ADVANCED "ICRO DEVICES
ADVANCED IIICRO DEVICES
PART NU"BER
ADS-4360
ADS-5050
A.9580
A.9581
FUNCTION
Tipe Serdes
SCSI Bus Transceiver
Winchester/Floppy
Controller
Winchester Data
Separator
Features
GIC-t1/24 co.patible
Fonatter
Single-ended with
Auto ECC, built-in D"A
power up/down protection and Buffer
F" and "F" VCO/Pll
to NRZ data.
Clock/Data Rate
6 fItIz
N/A (9-Bit path)
15 Itbits/sec.
16 "bits/sec.
Technology
CIIOS
Bipolar
N"OS
Bipolar
Package Size
68-Pin PlCC
24-Pin Dual-in-line
68-Pin lCC
48 Pin Dual-in-line
Power Supply
+5VDC +/-5%
+5VDC +/-5%
+5 VDC +/-5%
+5VDC +/-5%
Te.perature Range
o to 70 C.
o to
o to 70 C.
o to 70 C.
Availability
•
•
2Q '86
2Q '86
$65/5's
$20.00/5's
SYST~
ELECTRICAL
CHARACTER-ISTICS
PHYSICAL
CHARACTERISTICS
70 C.
I
OE" Price (U.S.)/GTY
COIIIIENTS
*Factory direct only
through lanufacturing
license.
• Factory direct only
through lanufacturing
license.
PRODUCTS-41
Co.panion chip
to A19580.
Q Peripheral Concepts
I
Lax
ItANUFACTURER
DATA TECHNOL06Y
CORPORATION
DATA TECHNOL06Y
CORPORATION
DATA TECHNOL06Y
CORPORATION
HITACHI LTD.
PART NU"BER
DTC1505
DTC1506
DTC1507
63463
FUNCTIDN
Dlh Sequenc.,.
Buffer "elOry Controller Dlh SepU'ltar
Minchester Controller
Feltures
SERDES, ECC Ind For.lt
Control for NRZ Dltl
Buffer "Inlger and Dltl Internll VCO with "F"
Encode/Decode
Transfer control
ST506 Dr S"D Interfaces
Clock/Dah Rite
15 !VIz
10 !VIz
10
4/6/8 "hz versions
C~S
C~S
C~S
2-UI
Pichge Size
6a-Pin PLCC
68-Pin PLCC
24-Pin DUII-in-Line
48-Pin DUII-in-line
Pour Supply
+5YOC +/-51
+5YDC +/-51
+5yOC +/-5%
+5YDC +/-10%
Telperlture Ringe
o to 70 C.
o to 70 C.
o to 70 C.
-20 to 75 C.
•
NOIf
-
ELECTRICAL
CHARACTERISTICS
~z
.
Technology
C~S
PHYSICAL
CHARACTERISTICS
(
•
AVlilibility
o
•
•
DE" Price (U.S.)/ITY
C~"ENTS
•
..
.63.20 (B"hz)
• 10K "inilUl. AVlillble • 10K "iniIUi. AVlillble • 10K "inilUl. Availlble 68000 COlpatible
Hast Bus, 2 Internll
only through factory
only through flctary
only through factory
licensing Ind contrlct. licensing and contract. licensing Ind contrlct. 256 8yte Buffers.
Peripheral Concepts
PRODUCTS-42
_ . _ ••••• _
.-
-. "-- .. --
--
. . _ . _ _• • • • r
~~_~~
____ _
LSX
IlAllllFACTURER
IHTR CORPORATIOJI
IHTR CORPORATION
NATIONAL SEftICONDUCTOR
CORPORATION
NATIONAl SEftICONDUCTOR
CORPORATION
PART NUftBER .
82062-05
8272A
DP8451/55
DP8461165
FUNCTION
Ninchester Controller
Floppy Disk Controller
Data SeparAtor
Data Separator
ST506/412 COlpatible.
External ECC
Single/Double DenSity,
IB" 3740 and Systel34
NRZ version of the
8461165
Includes ftF" Data
Decoder
5.0 "Bits/sec.
500 KBits/sec.
Up to 25 ftbits/sec.
Up to 25 "bits/sec.
Silicon gate HftOS
Silicon gate
Oxide-Isolated Bipolar
Oxide-Isolated Bipolar
Package Size
40-Pin Dual-in-line
40-Pin Dual-in-line
20-Pin Dual-in-line
24-Pin narro. DIP
PUler Supply
+5YDC +/-5%
+5VDC +/-5%
+5VDC +/-5%
+5VDC +/-5%
Telperature Range
o to 70 C.
o to 70 C.
o to 70 C.
o to 70 C.
Availability
NON
NON
0
NON
'25.7511 00· s
.25.75/100·5
ELECTR.ICAl
CHARACTER ISTI es
Features
!
,
i
!
J
.
Clod/Data Rate
Technology
N~S
PHYSICAl
CHARACTERISTICS
(
I
DE" Price (U.S.)/QTY .32.001100·s
COftftENTS
COlpatible .ith
the ND1010.
.. '7.151100· s
.
COlpatible "ith
the NEe 765A.
PRODUCTS-43
8455 has Phase-frequency 8465 has Phase-frequency
cDlparison lode.
cDlparison lode.
(9 Peripheral Concepts
--" -- -
~=--::~-.-.--
LSX
(
"ANUFACTURER
NATIONAL SEftICONDUCTOR
CORPORATION
NATIONAL SE"ICONDUCTOR
CORPORATION
NATIONAL SEftICONDUCTOR
CORPORATION
PART NU"BER
DP8462
DP8463
DP8464
FUNCTION
2,7 Code Synchronizer
2,7 RLL ENDEC
Pulse Detector
Features
Contains PLL and YCD
IB" 2,7 and Xerox 2,7
RLL cOlpatible
Accepts Inputs Directly Prograllable Drive/Hast
Frol R/M Alplifier
Interfaces
Clack/Data Rate
Up to 25 !bits/sec.
Up to 25 "bits/sec.
Up
Oxide-Isolated Bipolar
2-licron C"OS
Oxide-Isolated Bipolar
2-licron C"OS
Package Size
24-Pin narro. DIP
lS-Pin Dual-In-Line
24-Pin Dual-In-Line
48-Pin Dual-In-Line
Po.er Supply
+5YDC +/-5%
+5YDC +/-5%
+12YDC +/-5%
+5YDC +/-5%
Telperature Range
o to 70 C.
o to
o to 70 C.
o to 70 C.
NOli
NOli
$22.00/100'5
t350/Qty 25 (20fthz)
Contains A6C Alplifier
and Differentiator.
Speed versions available
frol 5 to 25"hz.
NATIONAL SE"ICONDUCTDR
CORPORATION
DP8466
Iii nchester Di sk
Controller
ELECTRICAL
CHARACTERISTICS
I
to 25 "bits/sec.
Up to 25 "bits/sec.
~
Technology
PHYSICAL
CHARACTERISTICS
(
70 C.
I
Availability
NOli
DEft Price (U.S.)/QTY $25.75/100's
COftftENTS
o
NOli
•
$30.001100'5
Three Versions Available Prograllable Address
For Different lIindo.
"arks/Prealble Length.
Error "argins.
Peripheral Concepts
PRODUCTS-44
LSI
IlANUFACTURER
NCR CORPORATION
NCR CORPORATION
NCR CORPORATION
NCR CORPORATION
PART NU"BER
5380
5381
5385E
5386
FUNCTION
SCSI Protocol Controller SCSI Protocol Controller SCSI Protocol Controller SCSI Protocol Controller
ELECTRICAL
CHARACTERISTICS
I
D"A or Progra.led I/O,
Arbitration Interrupts
Features
Built-in Open Collector Built-in Open Collector D"A or Progralled I/O,
Arbitration Interrupts
Bus Transceivers
Bus Transceivers
Clock/Data Rate
10 "hz
10 Ithz
10 Ithz
10 "hz
N"OS
N"OS
N~S
""OS
.
Technology
!
Ic
I
PHYSICAL
CHARACTERISTICS
Package Size
40-Pin Dual-in-Line and 40-Pin Dual-in-Line
44-Pin PlCC
48-Pin Dual-in-Line and 48-Pin Dual-in-line
68-Pin PlCC
Paller Supply
+SVDC +/-5%
+5VDC +/-S%
+5VDC +/-S%
+5VDC +/-51
Teaperature ~ange
o to 70 C.
o to 70 C.
o to 70 C.
o to 70 C.
Avai labi Ii ty
NOli
NOli
NOli
4Q '85
Sf9.75/100's
S29.50/100's
$23.60/100'5
Sale as 5380, except
Support for external
Differential lines.
Post Rev. 10 tilings
supported. Replacelent
for 5385.
Superset of 5385E and
reco.lended for ne.
designs.
J
J
DE" Price (U.S.I/QTY $17.7S/100's
CD""ENTS
Hard.are Arbitration
Support.
.
•
PRODUCTS-45
o
Peripheral Concepts
Lex
"ANUFACTURER
NCR CORPORATION
NCR CORPORATION
NEC ELECTRONICS U.S.A.
NEC ELECTRONICS U.S.A.
PART NU"BER
5386S
8310
uPD7261
uPD765A
FUNCTION
SCSI Protocol Controller Bus Transceivers
lIinchester Disk
Controller
Floppy Disk Controller
ELECTRICAL
CHARACTERISTICS
Features
D"A or Progralled I/O,
Arbitration Interrupts
SCSI Bus Transcievers
and Arbitration Logic.
S"D or ST506 interface
at 6/12 "bits/sec
IB" 3740/34 COlpatible
Single/Double DenSity
Clack/Data Rate
2011hz
10 "hz
12 "Bits/sec (S"D)
500 KBits/sec.
NItOS
""OS
Silicon gate ""OS
Silicon gate N"OS
Package Size
48-Pin Dual-in-Line
40-Pin Dual-in-Line
40-Pin Dual-in-line
40-Pin Dual-in-line
Power Supply
+5YDC +1-51
. +5YDC+ I-51 .
+5VDC +/-51
+5YDC +1-51
Telperature Range
o to 70 C.
o to 70 C.
o to 70 C-
Oto 70 C.
NOli
NOli
$57.00/100'5
$8.15/100'5
.
Technology
c
PHYSICAL
CHARACTERISTICS
•
Availability
lQ '86
4Q '85
~
DE" Price (U.S.)/QTY $27.15/100'5
CO""ENTS
o
3 "egabyte/sec. SCSI
synchronous version
of 5386.
Peripheral Concepts
$U. 40/100' 5
COlpanion chip
for the 5385E.
PRODUCTS-46
fi
1
}
L.SX
ItAN\JFACTURER
SCIENTIFIC "ICRo SYSTE"S SCIENTIFIC "ICRo SYSTE"S SCIENTIFIC "ICRo SYSTE"S SCIENTIFIC "ICRo SYSTE"S
INCORPORATED
INCORPORATED
INCORPORATED
INCORPORATED
PART NU"BER
5011
5027
5050
5060
FUNCTION
Differentiil Driversl
Receivers
2,7 RLL Encoder
Disk SequencerlSERDES
Helory Buffer CDntroller
ST506 trinsceivers for
Data cable signals
5110 "egibits/setond
8-64 Bits of ECC, NRZ
Data input/output
4 Port DltA controller
operation
Clock/Data Rate
5 Itbits/sec.
5110 "hz
10 "bits/sec.
10 Ithz
j
Technology
CHoS
C"OS
CHoS
C"OS
"
PHYSICAL
CHARACTERISTICS
Package Size
16-Pin DUil-in-Line
16-Pin Dual-in-Line
68-Pin PLeC
68-Pin PlCC
Power Supply
+5VDC +/-51
+5VDC +1-51
+5VDC +1-51
+5VDC +/-51
Telperature Range
o to 70 C.
o to 70 C.
o to 70 C.
o to 70 C.
Availabili ty
•
•
•
•
,
i
ELECTRICAL
CHARACTERISTICS
I
Features
:
I
(
-
I
DE" Price (U.S.l/QTY
,
"
• 10K "inilul. Available. 10K "inilul. Available' 10K Hinilul. AViilable • 10K Itinilul. Available
only through factory
only through factory
only through factory
only through factory
licenSing and contract. licensing and contract. licensing and contract. licenSing and contract.
PRODUCTS-47
Q
Peripheral Concepts
LSX
SCIENTIFIC ftICRD SYSTEftS SI6NETICS CORPORATION
INCORPORATED
ItANUFACTURER
SCIENTIFIC ftICRD SYSTEMS SCIENTIFIC ftlCRO
INCORPORATED
INCORPORATED
PART NUftBER
5070
5080
FUNCTION
Dati Separatar .
SCSI Pratacal Controller 11ft-PC Bus Contraller
Features
ftFft Encoder/Decader
Single-chip Hast adapter YCO/Separatar far
Pragrallable InterST506/412 (iff")
face .ith Drivers/recvrs far IBft-PC bussls
Clack/Data Ratl
5 ta 7.5
10 liz
10 ""Z
up ta 10 "Bits/sec.
Technalagy·
CftOS
C"OS
CItOS
Silican gate N"OS
Package Size
24 Pin Dual-in-Line
68-Pin PLCC
68-Pin PLCe
24-Pin Dual-in-line
PaRr Supply
+5YDC +/-5%
+5YDC +/-5%
+5YDC +/-5%
+5YDC +/-51
Telperature Range
o to 70 C.
o ta 70 C.
o ta 70 C.
o ta 70 C.
Avail abi Ii ty
•
•
•
la '86
SYSTE~
50'0
SCB68459
-
Phase-Lack Laap
ELECTRICAL
CHARACTERISTICS
~its/sec
PHYSICAL
CHARACTERISTICS
(
DE" Price (u.S.)/aTY
CO""ENTS
~
~
S8.00/100's
• 10K "inilul. Available • 10K "inilul. Available • 10K "inilul. Available "atarala has aption
only through factary
only through factory
only through factary
to second source.
licensing and contract. licensing and contract. licensing and contract.
( ) Peripheral Concepts
PRODUCTS-48
l-
LeJ:
t
f
IIANtlFACTURER
SI6NETICS CORPORATION
STANDARD "ICROSYSTE"S
CORPORATION
STANDARD ftICROSYSTEftS
CORPORATION
STANDARD "ICROSYSTEftS
CORPORATION
PART NU"BER
SCN68454
FDC1791
FDC765A
FDC9216
FlDlCTION
Ninchester and Floppy
Contraller
Floppy Disk Controller
Floppy Disk Cantroller
Data Separator Chip
features
256 Byte sector buffer
internal
Single or Double
DenSity
18ft 3740/34 Calpatible
Single/Double Density
Digital Data Separator
Clack/Data Rate
up to 10 "Bits/sec.
125 to 500 KBits/slC.
500 KBih/stC.
125 to 250 KBits/sec.
Technology
Silicon gate ""OS
Silican gate ""OS
Silican gate N"OS
Silican gate N"OS
Package Size
48-Pin Dual-in-line
40-Pin Dual-in-line
40-Pin Dual-in-line
8-Pin Dual-in-line
Power Supply
+5VDC +/-51
+5VDC, +12VDC +/-5%
+5VDC +/-5%
+5VDC +/-5%
o ta 70 C.
o to 70 C.
o to 70 C.
o to 70 C.
ELECTRICAL
CHARACTERISTICS
PHYSICAL
CHARACTERISTICS
(
Telperatu~e
Range
.'
Avai Iabi li ty
NON
OE" Price (U.S.)/DTY $55.00/100'5
CO""ENTS
"otorala has aptian.
to second source.
NON
I
$35.20/100'5
NOli
NOli
$8.00/100'5
$6.10/100'5
True/Inverted Host Data COlpatible ta the
Bus versions available. NEC uPD765A.
PRODUCTS-49
o
COlpanion chip to the
1791 contraller.
Peripheral Concepts .
I
LSX
(
"ANUFACTURER
STANDARD "ICROSYSTE"S
CORPORATION
STANDARD "ICROSYSTE"S
CORPORATION
STANDARD "ICROSYSTE"S
CORPORATION
STANDARD "ICROSYSTEKS
CORPORATION
PART HUImER
FDC9225
FDC9226
FDC9229
FDC9266
FUNCTION
Buffer ltinager
Winchester Dati
Separator
Floppy Disk Dati
Floppy Disk Controller
Separator/Precolpensator
ELECTRICAL
CHARACTERISTICS
Features
Dual-Ported (32K DRAft) 5 "bit/sec. Digital Data Prograllable Precolp
Control for Winchesters. Separator
Values.
Clock/Dati Rate
5 11hz
5 11hz
500 Kbits/sec.
500 Kbits/sec •
C"OS
CftOS
Silicon gate N"OS
Silicon gate NftOS
Package Size
48-Pin Dual-in-line
24-Pin DUal-in-line
20-Pin DUal-in-Line
40-Pin Dual-in-line
Power Supply
+5YDC +/-5%
, +5YDC +1-5%
+5YDC +/-5%
+5YDC +/-5%
Teaperature Ringe
o to 70 C.
o to 70 C.
oto 70 C,.
o to 70 C.
NOW
NOW
$13.25/100'5
Built-in Digital Data
Separator
.
Technology
PHYSICAL
CHARACTERISTICS
(
L
Availabi Ii ty
NOW
NOW
~
DE" Price (U.S.)/QTY $20.90/100'5
$12.25/100'5
$10.60/100'5
CO""ENTS
Separator for 9224.
External Iglue logic
for the 1791.
( ) Peripheral Concepts
PRODUCTS-50
l
Software cOlpatible with
the FDC765A.
L.ex
IlANllFACTURER
STANDARD "ICROSYSTERS
CORPORATION
STANDARD "ICRDSYSTE"S
CORPORATION
SUNOl SYSTE"S
SUNOL SYSTE"S
.,
PART MU"BER
HDCll 00
HDC9224
DClool
RBI002
J
FUNCTION
Minchester Controller
Chip Set
Minchester/Floppy
Controller
Minchester/Floppy
Controller
RA" Buffer/Controller
I
,
.
1
ELECTRICAL
CHARACTERISTICS
Features
Requires Nicroprocessor. ST506/412 and SA400/450 Proorallable Interface, Buffer "anaoer far
or SASOOJ850 COlpatible Internal 32-Bit ECC
the DCI001
Clock/Data Rate
5 "bits/sec •
5 Itbi ts/sec.
15.0 "Bits/sec.
10 Nhz
Silicon oate NNOS
Silicon gate N"OS
C"Os
C"OS
Package Size
20-Pin Dual-in-line
40-Pin Dual-in-line
40-Pin Dual-in-line
40-Pin Dual-in-line
Power Supply
+5VDC +/-51
+5VDC +/-51
+5VDC +/-51
+5VDC +/-51
Telperature.Range
o to 70 C.
o to 70 C.
o to 70 C.
o to 70 C.
Avail abi li ty
NOli
NOM (Cer 6IP)
NOM
NON
..5.oo/100·s
$60.00/100'5
$60.00/100·s
.
Technolooy
PHYSICAL
CHARACTERISTICS
;(
DE" Price (U.s.)/QTY $13.50/100's
CO""ENT5
5-chip set.
.
Built-in D"A channel and Sold as a Chip-Set
IB" cOlpatible Floppy Nith the RBI002.
Forlats.
PRODUCTS-51
~
..
Sold as a Chip-Set
Mith the RBI002.
Q Peripheral Concepts
Le:I
"ANUFACTURER
WESTERII DI6ITAL
CORPORATION
NESTERN DI6ITAL
CORPORATION
NESTERII DI6ITAL
CORPORATION
NESTERN DI6ITAL
CORPORATION
PART NU"BER
NDI010A-OS
NDI050
IID1l00-19
NDl1COO-22
FUNCTION
Winchester Controller
Ninchester Controller
SCSI Protocol Controller Buffer ftelory Controller
Features
ST506/412 COlpatible,
External ECC
S"D Drive Interface
Address 6en, Arbitration Sector Buffer "anage.ent
R/N Control and Parity and control
Clock/Data Rate
5.0 "Bits/sec.
9.6 ""its/sec.
5 "Hz
Silicon gate ""OS
Silicon gate N"DS
Sili~on
Package Size
40-Pin Dual-in-line
68-Pin LCC
40-Pin DIP
84-Pin JEDEC 'A'
Paller Supply
+5VDC +/-5%
+5VDC +/-5%
+5VDC +/-5%
+5VDC +/-10%
TelPerature.Range
o to
o to 70 C.
o to 70 C.
o to 70 C.
NOli
NON
S23.50/100·s
S25.00/100's
Designed for the board
product "DI003-SCS.
Designed for the board
product "DIOO2-"AH.
ELECTRICAL
CHARACTERISTICS
5 "Hz
~
Technology
gate N"oS
C"OS
PHYSICAL
CHARACTERISTICS
(
70 C.
..
I
Availability
NOli
NOli
~
DE" Price (U.S.)/GTY S32.50/100·s
CD""ENTS
o
S68. 001100' 5
COlpatible wi th
the Intel 82062.
Peripheral Concepts
PRODUCTS-52
LSX
"ANUFACTURER
MESTERN DIGITAl
CORPORATION
NESTERN DI6ITAL
CORPORATION
NESTERN DIGITAL
CORPORATION
NESTERN DI6ITAL
CORPORATION
PART NU"BER
NDlnO-OO
ND2010A-OS
MD2791
MD3030
FUNCTION
Floppy Disk Controller
Ninchester Controller
Floppy Disk Controller
Ninchester- Controller
Features
Built-in Digital Data
Separator
ST506/412 COlpatible,
Auto EeC Correction
Built-in Analog Data
Separator
Auto-ECC/built-in
Data Separator
Clock/Data Rate
250 KBits/sec.
S.O "Bits/sec.
12S to SOO KBits/sec.
S "bits/sec.
Technolll9Y
Silicon gate ""OS
Silicon gate N"OS
Silicon gate N"OS
CI'IOS
Package Size
28-Pin Dual-in-line
40-Pin Dual-in-line
4o-Pin Dual-in-line
40-Pin Dual-in-line
POlllr Supply
+SVDC +/-51
+5VDC +/-S%
+SVDC +/-SI
+SVDC +/-51
Te.perature Range
o to
o tD 70 e:
o to 70 C.
o to 70 C.
Avai labi Ii ty
NOli
NOli
NON -
IG 'S6
$IS.30/100'5
$60.00/100'5
ELECTRICAL
CHARACTER ISTICS
PHYSICAl
CHARACTERISTICS
('
70 C.
OE" Price (U.S.)/GTY $14.881100'5
l
$SO.00/100's
~
eO""ENTS
ND1772- enhanced step ECC versiDn of IIDI010.
rates, IID1773- Software
cOlPatible with IID2791.
PRODUCTS-53
r
True/Inverted Host Data Data separator version
Bus versions available. of IID2010.
Q Peripheral Concepts
Lax
"ANUFACTURER
IIESTERN DIGITAL
CORPORATION
IIESTERN DIGITAL
CORPORATION
IIESTERN DIGITAL
CORPORATION
IIESTERN DIGITAL
CORPORATION
PART NU"BER
1105020
IID5027
IID5050
IID9216
FUNCTION
"F" Encodfr/Dfcoder
RLL Encoder/Decoder
lIinchester Controller
Data Separator Chip
Features
"F" to NRI with ESDI
serial lode support
"F" to 2,7 RLL
Convertor
Controller with
DRA" control lines
Digital Data Separator
Clock/Data Rate
5 "Bits/sec.
7.5 "Bits/sec.
5.0 "Bits/sec.
125 to 250 KBits/sec.
C"OS
C"OS
CItOS
Silicon gate ""0S
Package Size
40-Pin Dual-in-line
18-Pin Dual-in-line
68-Pin LCC
8-Pin Dual-in-line
Power Supply
+5VDC +/-5%
+5VDC +/-5%
+5VDC +1-5%
+5VDC +/-5%
Telperature Range
o to
o to
o to
o to
ELECTRICAL
CHARACTERISTICS
Technology
PHYSICAL
CHARACTERISTICS
(
70 C.
70 C.
70 C.
70 C.
l
Availability
NOli
UI '86
NOli
'29.00/100'5
$78.20/100'5
$5.95/100'5
COlpatible with the
IIDI010 and IID2010.
COlpatible with the
IIDIOIO and IID2010.
DRA" version of the
IIDC2010A-05.
Peripheral Concepts
PRODUCTS-54
DE" Price (U.S.I/QTY 148.001100'5
CO""ENTS
o
NOli
.
-NESTERN Dl6ITAL
CORPORATION
~ACTUR£R
J
MD9232
PART NU"BER
Data Separator Chip
• FUNCTION
-
!
ElECTRICAL
CHARACTER ISTI CS
Futures
Digital Data Separator
Clock/Dah Rate
125 to 250 KBits/sec.
Technology
.
Silicon gate NftDS
PHYSICAL
CHARACTERISTICS
!:ackage Size
a-Pin Dual-in-line
Paller Supply
+5YDC +/-5%
Te.perature Range
o to 70 C.
Availability
NOM
•
DE" Price (U.S.)/GTY $9.351100'5
•
CD""ENTS
I.proved perforlance
Version of the 9216.
.
I
PRODUCTS-55
(9 Peripheral Concepts
,-
~.
MANUFACTURER
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SASI/SCSI
Adaptive Data Systems
Advanced Elec. Design
Advanced Storage Concepts
Ampro Computers, Inc.
Andromeda Systems
Archive Corporation
AVIV Corporation
DASU, Inc.
Bytronix Corporation
Centan Corporation
Central Data Corporation
Ciprico, Inc.
Comark Corporation
Computer Storage Technology
Data Technology Corp.
Data-Sud Systems
Distributed Logic Corp.
Distributed Processing
Dual Systems
DY-4 Systems, Inc.
Electronic Modular
Emulex Corporation
Force Computers
Fujitsu America, Inc.
General Micro Systems
General Robotics
Hamilton Std. Dig. Systems
Hitachi Ltd.
Integrated Solutions, Inc.
Intel Corporation
Interphase Corporation
Ironies, Inc.
Konan Corporation
Host
IBM-Pe/XT/AT Adapter
X
LSI
X
DEC*
!Other Mini* Multibus*
X
I
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Macrolink, Inc.
HDB Systems
Micro Technology Inc.
Microproject Corporation
Mini Ca.puter Technology
Hizar, Incorporated
Motorola, Inc.
National Semiconductor
SCR Corporation
NEC Electronics USA
PEP Modular Computer
Plessey Micros)'stems
Qualogy
Scientific Micro Systems
Sigen Corporation
Sigma Information Systems •
Signetics Corporation
Spectra Logic Corporation
Standard Hicrosystems Corp.
Sunol Systems
Sysgen Corporation
TO Systems, Inc.
\,"angtek
SASI/SCSI
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IBM-PC/XT/AT Adap
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LSI
·Controller Concepts Volume II
pther M1n1. Mult1bus·
VHEbus*
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l'espercorp
~estern Digital Corp.
Xebec Corporation
Iylogics
Zetaco, Incorporated
DEC·
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MARUFACTUURS' PROFILES
(
Adaptec, Inc.
580 Cottonwood Drive
Milpitas, CA 95035
(408) 946-8600
Adaptec was founded in 1981 as a board-l~vel controller manufacturer
for the SCSI marketplace. The company now supplies IBM-PC controllers,
Host Adapters, and OEM semiconductor products.
Adaptive Data Systems, Inc.
2627 Pomona Blvd.
Pomona, CA 91768
(714)" 594-5858
Originally founded as Adaptive Data and Energy Systems, ADS I is a
manufacturer of both controllers and subsystems for the SCSI market.
The company has recently entered the controller chip-set market as
well as the IBM-PC Host adapter segment.
(
Advanced Micro Devices
901 Thompson Place
Sunnyvale, CA 94086
(408) 749-4100
AMD will enter the winchester controller chip market in early 1986.
The company is readying a data separator device and a combination
winchester/floppy device.
Advanced Storage Concepts
9660 Hillcroft Avenue #325
Houston, TI 77096
(713) 729-6388
ASC is a recent start-up who has entered the controller market with an
SCSI caching disk controller. The company also offers a sophisticated
Host Adapter for the IBM-PC.
HAN-1
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Peripheral Concepts
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Ampro Computers, Inc.
PO Box 390427
Mountain View, CA 94039
(415) 962-0230
Ampro is a manufacturer of CP/M based single board computers and
systems. The company currently offers an SCSI port (with an enhanced
command set) and a floppy controller on their SBC products.
Archive Corporation
1650 Sunflower Ave.
Costa Mesa,CA 92626
(714) 641-0279
Archive is an OEM manufacturer of 1/4 inch streaming tape drives and
subsystems. The company has entered the IBM-PC tape controller market
this year.
(
Centan Corporation
1183 Bordeaux Drive
Suite 15
Sunnyvale, CA 94089
(408) 734-1006
Centan is a subsidiary of National Computers Ltd. of Chiyoda-Iu,
Tokyo, Japan, an engineering and trading firm providing disk drives,
disk drive compnents~ subsystems, and controllers. The company is
currently marketing both SCSI and IBM-PC 'controllers/subsystems in the
United States.
.
Data Technology Corporation
2775 Northwestern Pkwy.
Santa Clara, CA 95051
(408) 496-0434
Data Technology is a manufacturer of SCSI and IBM-PC controllers, Host
Adapters, and single-boara computers. The company was a driving force
in the development of the SAS! interface in the late 70's.
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MAN-2
Peripheral Concepts
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Distributed Processing Technology
132 Candace Drive
PO Box 1864
Maitland, FL 32751
(305) 830-5522
DPT is a division of the S.I. Goldman Company, a manufacturer of SCSI
controller boards. All of the company's SCSI products are built around
large cache memories. The company is currently pursuing the
standardization of caching commands in the SCSI specification with the
13T9·.2 ANSC committee.
Emulex Corporation
3545 Harbor Blvd.
Costa Mesa, CA 92626
(714) 662-5600
Emulex is major manufacturer of DEC-compatible controllers and
subsystems. The company has recently entered the SCSI
controller/subsystems market, and also offers Host Adapters for Qbus,
Unibus, and IBM-PC systems.
(
Force Computers, Inc.
2041 Mission College #150
Santa Clara, CA 95054
(408) 988-8686
Force is primarily a manufacturer of VMEbus systems. The company
offers VMEbus Host Adaptefs, and remarket~ Data Technology's
controller products for use within VMEbus systems.
.
Fujitsu America, Inc.
3055 Orchard Drive
San Jose, CA 95134
(408) 946-8777
Fujitsu America is a U.S. subsidiary of Fujitsu Ltd. of Tokyo, Japan,
a major manufacturer of high capacity rigid disk drives. The company
has entered the controller business this year, with an SCSI product
designed to operate with the company's line of SMD drives.
MAN-3
o
Peripheral Concepts
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Hitachi America, Ltd.
1800 Bering Drive
San Jose, CA 95131
(408) 292-6404
Hitachi entered the winchester controller chip market at the beginning
of this year. Their 63463 device is a winchester controller compatible
with the 68000 microprocessor.
Intel Corporation
3065 Bowers Ave.
Santa Clara, CA 95051
(408) 987-8080
Intel is a major semiconductor manufacturer of microprocessor
components and memories. The company offers a line of floppy disk and
winchester controllers chips. Intel has also aquired manufacturing
rights to Western Digital's WD1010/2010 controller chips. The
companys' Hillsboro, Oregon facilities is responsible for the
marketing and manufacturing of all Multibus IIII products.
Interphase Corporation
2925 Merrel Road
Dallas, TX 75229
(214) 350-9000
Founded in 1974, Interphase is a manufacturer of controllers and
subsystems for Multibus, VMEbus, and most recently, the IBM-PC. The
companys' subsystems feature very high capacity di~k drives.
Konan Corporation
1425 North 27th· Avenue
Phoenix, AZ 85009
(602) 269-2649
•
Founded in 1978, Konan is manufacturer of controller boards for the
SCSI, Multibus, and IBM-PC markets, as well as offering a line of Host
adapter products.
o
MAN-4
Peripheral Concepts
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Mizar, Inc.
302 Chester Street
St. Paul, MN 55107
(612) 224-8941
Mizar is a full line supplier of VMEbus modules. The company offers a
VME to SCSI Host Adapter as part of its product line.
National Semiconductor
2900 Semiconductor Drive
Santa Clara, CA 95051
(408) 721-5955
National has entered the disk controller semiconductor market with a
line of products intended for use within disk drives and board
products. The company's DP8451 device is one of the most widely used
Data Separator chips in the industry.
NCR Corporation
OEM Products
3718 North Rock Road
Wichita, IS 67226
(316)688-8000
(
The OEM Products division of NCR manufacturers a line of SCSI disk and
tape controllers as well as Host Adapters. The company has recently
introduced a 1/4 inch streaming tape drive with an SCSI interface.
NCR Corporation
Microelectronics Division
1635 Aeroplaza Drive
Colorado Springs, CO 80916
(303) 595-5795
NCR's Colorado springs semiconductor division manufactures and markets
a line of SCSI protocol ch1ps and support devices for use within
controllers, drives, or Host Adapters. Besides OEM sales, these
products are used capti~ely within the OEM products division on
various board-level controllers.
MAN-5
(9 Peripheral Concepts
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NEC Electronics USA Inc.
Natick Technology Center
One Natick Executive Park
Natick, MA 01760
(617) 655-8833
NEC Electronics is the U.S. marketing and sales arm for the companys'
line of floppy and winchester controller devices. The uPD765A floppy
device is one of the most popular floppy controllers in use today, and
is used within the IBM-PC/XT/AT computers.
PEP Modular Computers, Inc.
600 North Bell Avenue
Carnegie, PA 15106
(412) 279-6661
PEP Modular is a German manufacturer of industrial control systems.
The company is currently marketing a VME to SCSI Host adapter as well
as a complete family of VME modules in the United States.
(
Plessey Microsystems
One Blue Hill Plaza
Pearl River, NY 10965
(914) 735-4661
Plessey Microsystems is a subsidiary of Plessey PLC, a major"supplier
of telecommunications and defense electronics. The Microsystems
subsidiary is currently manufacturing a family of VME products,
including a VME to SCSI Host Adapter.
.
Scientific Micro Systems, Inc.
339 N. Bernardo
Mt. View, CA 94048
(415) 964-5700
SMS is a manufacturer of subsystems and controllers for the
DEC-compatible and Multibus markets, as well as a controller supplier
in the IBM-PC and SCSI markets. The company also manufactures Host
Adapters and has a line of semiconductor products.
o
MAN-6
Peripheral Concepts
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Sigen Corporation
1800 Wyatt Drive
Suite 6
Santa Clara, CA 95054
(408) 988-2527
Sigen Corporation has recently entered the IBM-PC controller market
with winchester and tape controller products. The company also has a
line of VMEbus products.
Sigma Information Systems
6505C Serrano Ave.
Anaheim, CA 92807
(714) 632-0474
Sigma is a manufacturer of DEC-compatible controllers and subsystems.
The company has recently introduced a Qbus to SCSI Host adapter.
Signetics Corporation
811 E. Arques Avenue
Sunnyvale, CA 94086
(408) 739-7700
.(
Signetics has entered the winchester/floppy chip business with a
multifunction LSI controller called the SCN68454. Motorola has a
second-source option, but has not exersized manufacturing rights at
this time.
Standard Microsystems Corporation
35 Mar-cus Blvd.
Hauppauge, NY 11788
(516) 273-3100
SMC is a semiconductor manufacturer of storage and communications
products. The company currently offers an extensive line of floppy and
winchester controllers. In ~he near future, the company may enter the
OEM controller board-level business.
(
MAN-7
( ] Peripheral Concepts
Sunol Systems
1187 Quarry Lane
Pleasanton, CA 04566
(415) 484-3322
Sunol Systems is a subsystems and networking supplier for the IBM-PC
and Apple MacIntosh systems. The company will enter the board-level
and semiconductor controller market this year.
Sysgen Inc.
47853 Warm Springs Blvd.
Fremont, CA 94539
(415) 490-6770
Sysgen is a supplier of tape and winchester subsystems/controllers.
The company has recently expanded its controller offerings in the SCSI
area."
TD Systems, Inc.
24 Payton Street
Lowell, MA 01853
(617) 937-9465
(
TD systems is a manufacturer of high performance, emulating SCSI Host
adapters. Their product line includes various Qbus products, and the
company has recently introduced a Unibus to SCSI Host adapter.
Wangtek
41 Moreland Road
Simi Valley, CA 93065
(805) 583-5255
Wangtek is primarily an OEM supplier of 1/4 inch stream~ng tape
drives. The company has recently entered the IBM-PC and SCSI tape
controller market.
Western Digital Corporation
2445 McCabe Way
.
Irvine, CA 92714
(714) 863-0102
Western Digital is a leading supplier of semiconductor controllers for
the floppy and winchester markets. Over the past four years, the
company has also developed a series of SCSI and IBM-PC controllers
boards, and is a major supplier of board-level controllers to IBM.
o
MAN-8
Peripheral
con~ePts
(
lebec Corporation
.055 Gateway Place 1600
·San Jose, CA 95110
(408) 287-2700
Xebec is a leading supplier of winchester controller boards and
subsystems. In recent years, the company has entered the disk drive
business. Xebec is a major supplier of board-level controllers to IBM.
(
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MAN-9
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Peripheral Concepts
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