1985_Controller_Concepts_2 1985 Controller Concepts 2

User Manual: Pdf 1985_Controller_Concepts_2

Open the PDF directly: View PDF .
Page Count: 192

Download
Open PDF In Browser	View PDF

CONTROLLER
CONCEPTS

;

VOLUME

Multibus .
Multibus "
VMEbus
Qbus/Unibus
DG Nova/Eclipse'
Perkin-Elmer/T I.

Peripheral Concepts

1985 CORTROLLER CORCEPTS
VOLUME 2 •

(

Peripheral Concepts, Inc.
18003-G2 Sky park Circle
Irvine, California 92714
(714)250-9510
c 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.

Peripheral Concepts

------

'wrll"wti(§ iAb··'_~i"~·"1l· ""' . .s

tin

ft. z"

~#'*Ct1'

'rb' "00'6' -'"rib

e'ef .... ,

• S'

FOREWORD

The 1985 peripheral controller market has expanded into new areas, and
so has this year's edition of Controller Concepts. Several new
sections have been added this year, including Host Adapters and
Inbedded controllers in Volume 1 and VMEbus controllers in this
volume.
The VMEbus is a leading contender for the rapidly growing 32 bit
microcomputer market. With solid roots in Europe, VME has already made
impressive gains in the U.S. workstation and CAD/CAM markets. While
there is excitement about VME's future, its success is by no means
guaranteed. The VMEbus section examines some of the factors that can
profoundly affect the VME controller business over the next few years.
In other areas as well, this year's edition has been greatly expanded.
We have presented an in-depth technical discussion of new host
interfaces. We have also provided a much more detailed product matrix.
Some new forecasting categories have been added. The Multibus and
VMEbus statistics have been broken down by drive interfaces (i.e.
ST506, ESDI, SMD, QIC, Pertec). For' the DEC-compatible controllers,
additional breakdowns by bus type (Q-bus/Unibus) and by business type
(OEM/Captive) have been included. It is therefore not surprising that
we ended up splitting the report in two separate volomes. The first
volume contains SASI/SCSI, IBM-PC/XT/AT, Host Adapters, and Imbedded
Controllers.

C.'

The accuracy of our work depends upon the the level of support we
receive from the industry. We are indeed grateful for the overwhelming
support we received during our field research earlier this year. We
are also thankful for the many suggestions regarding our 1984.report.
Most of those have been incorporate~ in this year's edition.
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.

Vipul Mehta

(

(\
,

( } Peripheral Concepts'

. en·M ....~

TABLE OF CONTEITS

INTRODUCTION
How the Report is Organized ••••••••••••••••••••••••••••••• INTRO-I
A Guide to Interpreting the Numbers ••••••••••••••••••••••• INTRO-3
Market Trends ••••••••••••••••••••••••••••••••••••••••••••• INTRO-4
Total Revenue Forecasts ••••••••••••••••••••••••••••••••••• INTRO-8
Total Shipment Forecasts •••••••••••••••••••••••••••••••••• INTRO-9
Revenue Share •••••••••••••••••••••••••••••••••••••••••••••• INTRO-IO
THE DEC COMPATIBLE HOST INTERFACES
Introduction •.••••••••••••••••••••••••.••••••••••••••••••••• DEC-I

A New Br~ed Of Computers ••••••••••••••••••••••••••••••••••••
DEC Mass Storage Configurations •••••••••••••••••••••••••••••
.Compatibility Issues ••••••••••••••••••••••••••••••••••••••••
Product Definition ••••••••••••••••••••••••••••••••••••••••••
Market Trends •••••••••••••••••••••••••••••••••••••••••••••••

Revenue Breakdown
Q-bus Vs Unibus •••••••••••••••••••••••••
Revenue Breakdown - OEM Vs. Captive •••••••••••••••••••••••••
Technology Trends •••••••••••••••••••••••••••••••••••••••••••

Competing Technologies ••••••••••••••••••••••••••••••••••••••
(.2Y Assumptions •••••••••••••••••••••••••••••••••••••••••••••

'Market Share Analysis •••••••••••••••••••••••••••••••••••••••
Revenue Forecasts •••••••••••••••••••••••••••••••••••••••••••
Shipment Forecasts ••••••••••••••••••••••••••••••••••••••••••

DEC-4
DEC-6
DEC-7
DEC-9
DEC-IO
DEC-IS
DEC-16
DEC-17
DEC-20
DEC-22
DEC-23
DEC-24
DEC-2S

MINICOMPUTER COMPATIBLE INTERFACES
Introduction ••••••••••••••••••••••••••••••••••••••••••••••• MINI-I
Revenue Forecasts ••••••••••••••••••••••••••••••••••••••••••• MINI-3
Shipment Forecasts •••••••••••••••••••••••••••••••••••••••••• MINI-4
Data General Compatible Interfafes
Introduction •••••••••••••••••••••••••••••••••••••••••••••••• DG-I
Market Overview/ Trends •••••••••••••••••••••••••••••••••••••• DG-2
Product Definition ••••••••• ~ ••••••••••••••••••••••••••••••••• DG-4
Market Share Analysis •••••••••••••••••••••••••••••••••••••••• DG-4

Perkin-Elmer Compatible Interfaces
Introduction ••...••.•••••..••••••••••••••.•.••••••••••••••••• PE-I
Market Trends/ Forecasts • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • PE-2
Market Shares • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • PE-3

Texas Instruments Compatible Interfaces • • • • • • • • • • • • • • • • • • • • • • TI-I

Q Peripheral Concepts
r

THE MULTIBUS HOST INTERFACE
Introduction •••••••••••••••••••••••••••••••••••••••••••
Bus Characteristics
Multibus I •••••••••••••••••••••••
Bus Characteristics - Multibus II ••••••••••••••••••••••
Product Definition •••••••••••••••••••••••••••••••••••••
Market Trends ••••••••••••••••••••••••••••••••••••••••••
Technology Trends ••••••••••••••••••••••••••••••••••••••
Competing Technologies •••••••••••••••••••••••••••••••••
Key Assumptions ••••••••••••••••••••••••••••••••••••••••
Market Share Analysis ••••••••••••••••••••••••••••••••••
Revenue Forecasts ••••••••••••••••••••••••••••••••••••••
Shipment Forecasts •••••••••••••••••••••••••••••••••••••
Revenue Breakdown By Drive Interface •••••••••••••••••••

MULTIBUS-l
MULTIBUS-4
MULTIBUS-5
MULTIBUS-7
MULTIBUS-8
MULTIBUS-12
MULTIBUS-15
MULTIBUS-17
MULTIBUS-18
MULTIBUS-19
MULTIBUS-20
MULTIBUS-21

THE VMEBUS HOST INTERFACE

Introdu.ction •••••••••••••••••••••••.•••••••••••••••••••••••• VME-l
Technical Characteristics ••••••••••••••••••••••••••••••••••• VME-3
Product Definition •••••••••••••••••••••••••••••••••••••••••• VME-l1
Market Trends ••••••••••••••••••••••••••••••••••••••••••••••• VME-12
Technology Trends ••••••••••••••••••••••••••••••••••••••••••• VME-17
Competing Technologies •••••••••••••••••••••••••••••••••••••• VME-20
Key Assumptions ••••••••••••••••••••••••••••••••••••••••••••• VME-22
Market Share Analysis ••••••••••••••••••••••••••••••••••••••• VME-23
Revenue Forecasts ••••••••••••••••••••••••••••••••••••••••••• VME-24
Shipment Forecasts •••••••••••••••••••••••••••••••••••••••••• VME-25
Revenue Breakdown By Drive Interface •••••••••••••••••••••••• VME-26

PRODUCT MATRIX
Introduction • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
DEC • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
MINI • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
MULTIBUS • • • • • • • • • • • • • • • • • • • • • • • • • •• • • • • • • • • • • • • • • • • • • • • •
VME • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
Manufacturers' Index • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •

PRODUCTS-l
PRODUCTS-3
PRODUCTS-42
PRODUCTS-56
PRODUCTS-71
PRODUCTS-81

MANUFACTURERS' PROFILES • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • MAN-l

IBM, IBM-PC, PC/XT, and PC AT are trademarks of International Business Machines
Corporation.
DEC, PDP, LSI, VAX, Q-bus, Unibus, Massbus and CMI are trademarks of Digital
Equipment Corporatio~.
NOVA, ECLIPSE and ECLIPSE/MY are trademarks of Data General Corporation.
Multibus. Multibus II and iRMX are trademarks of Intel Corporation.

(9 Peripheral Concepts

I RHODUCTI OR

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 1, which
contains SASI/SCSI, IBM-PC/XT/AT, Host Adapters and Imbedded
Controllers. In this way, the reader can get an idea of the total
controll~r market as well as the impact of the individual markets
listed in this volume.
The host interfaces covered in Controller Concepts (Vol 2) are:
These peripheral controllers are board-level products
which support the Q-bus, Unibus or any other interfaces
used on Digital Equipment computers. Controllers
purchased by DEC from third party suppliers for
incorporation into subsystems or for resale, are also
included. Controllers used internally by manufacturers
to build subsystems have been reported under the
"captive" category.

DEC Busses-

(

Minicomputer-

Multibus-

These peripheral controllers are board-level products
which support host interfaces for Data General,
Perkin-Elmer and Te~as Instruments minicomputers.
Controllers purchased by these computer manufacturers
from third party suppliers are also included.

These peripheral controllers are board level products which
support the Multibus-I (IEEE- 796) or Multibus-II
interfaces. Controller shipments from Intel have been
included. Controllers that are "private labeled" by
Intel from outside vendors have been credited to the
source supplier.

INTRO-I

(9 Peripheral Concepts

VMEbus- These peripheral controllers are board level products which
support the VMEbus or its extensions approved by the
VMEbus International Trade Association.

Most sections are then further divided into the types of peripherals
that the controller supports:
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. T4e produ~ts ar~ again grouped by
host interface.
Manufacturers' Profiles- A brief description of each supplier and the
product lines~anufactured.

INTRO-2

(9 Peripheral Concepts
ce.:

. __ ...

..,

.....2..

;,-4

...

,",

e ;:

C.•.t

; . . . ....,

, •.• "

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.

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 ~isted 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-Ievel production "buried" in the
subsystems.

INTRO-3

Peripheral Concepts

Market Trends
Peripheral Concepts estimates the total controller market/all
categories to be:

REVENUES ($)
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
compound 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 occuringduring the
third quarter, so it is likely that the worst is over.
i

A moderate 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

INTRO-4

Peripheral Concepts

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 DEC compatible controller segment accounted for 48.5% of all
revenues. generated in 1984, or roughly $73.85 Million. The second
strongest market was the Multibus at 30.6%, with revenues of $46.48
Million. In third place was the Minicomputer controller market, with
17.3%. The emerging VMEbus market accounted for a tiny 3.6%, or $5.53
Million in revenues.
By 1988, revenues from DEC-compatible controllers will reach $132.1
Million, but its market share will drop slightly to 45.1%. The
Multibus-I/II market will maintain in its number two position, but
C'ith a smaller 26.7% share of the market. VMEbus controllers will
exhibit a dramatic growth, capturing 17.8% of the total market, or
$52.03 Million. The Non-DEC minicomputer market share will decline to
10.4% in 1988. It is important to note that every single category will
register a .net growth in revenues for the 1984-88 period.
I

The VMEbus controller market is clearly the fastest growing category,
with a compound annual growth i. revenues of 75.1%. Explosive growth
projections for super microcomputers, fueled by the workstation and
CAD/CAM markets, will contribute most to this dramatic upswing in
VMEbus controller revenues. A shift towards smaller Q-bus based DEC
computers will result in lower average selling prices for compatible
controllers. Consequently, revenue share for DEC controllers will

INTRO-5

Q Peripheral Concepts

decline slightly, but the growth in shipments will remain strong. A
severe decline in revenues for Texas Instruments controllers and a
greater move towards captive controllers, will shrink the market share
of Non-DEC minicomputer compatible controllers. Competing busses,
particularly the VME, will slow the growth rate of the Multibus
controller market in the future.
There were 17 manufacturers offering 153 DEC-compatible products in
1984, or nine products per company. In the minicomputer market, 8
suppliers offered 56 products, or seven products per company.
Corresponding numbers for the Multibus market were 13 suppliers and 58
products, or 4.46 products per company. Lastly, 19 companies offered
40 VMEbus compatible controllers in 1984, or 2.1 products per company.
The total number of products, and particularly, the number of products
(

per company is an indicator of the maturity level of a category. As
the market becomes more stable, only a limited number of suppliers
remain, and each supplier offers a broader range of products. Applying
that rule, DEC was the most mature market, followed by other
minicomputers, Multibus, and VMEbus.
\

Finally, the markets covered in this volume (DEC Compatible,

"
Minicomputer, Multibus and VMEbus)
will account for 28.2% of the
controller market in 1985, Qr $164.08 Million. the remaining 71.8%
($417.84 Million) is shared among the SASI/SCSI, IBM-PC/XT/AT, Host
Adapters, semiconductors, and Imbedded Controllers. Market segments
covered in each of the two volumes will continue to maintain their
respective shares. In 1988, controllers covered in this volume will

(

INTRO-6

Peripheral Concepts

.J,

,
1

generate $292.71 Million, or 29.9%. The total market will reach
$979.17 Million in that year. Interestingly, the compound annual

growth rates for the two markets will be nearly equal, 17.8% for-

controllers covered in this volume and 17.5% for controllers covered
by Volume 1.

(

INTRO-7

Q
..

Peripheral Concepts

mID OTHER "INI
Il!i'il!iI "ULTIBUS

;.;.-.=..,.

_ _V"EBUS
'-iiiiiiiiiiiioo
_ _......_ _..

......................................

.........................................................................

..................................... .,.--........
lee

TOTAL CONTROLLERS -AU. CATIlXlIUES
IEVEl'IU! SUIItARY

REVENUES BT PRODUCT 'rrp! ($000)

(

AcnJAL

>
>

FORECAST

(

1985

1984

1987

1986

1988

1984~

CONTROLL!I TYPE:

CAGR:

(%)

R!V($I)

(%)

1l"V($&:)

R!V($&:)

(%)

REV($&:)

D~(JIpATIBL!

73,850

48.5

83,686

51.0 101,728

51.5 116,711

0'l'IIEII HINI

SRIPH!N'I'S 8Y PRODUCT TYPE (000)

lC'roAL

FORPJ:AST

1984

1986

1985

1987

1988

1984-88

COItTROLL!I TYPE

CAGR:

UNITS(I)

(

(%) UNITS (I)

(%) UNITS(I)

e%) UlfITS([)

(%)

UlfITS(I)

(%)
44.6

DI!C-«MPATIBLE

49.1

46.7

59.9

SO.l

76.7

SO.3

95.3

47.7

115.5

0'11IER IWfIC.

Peripheral Concepts

• 'W..

,."")

..,.

DEC COMPATIBLE CONTROLLER REVENUES
OEM Vs. CAPTIVE

Cl CAPTIUE

148 ............................................................... .

128

c.)

188
88
68
48

FIGURE 1.2

<:-------AC'l'UAL

DYiIWIS e$OOO)

------------------------>

<----------~~----------------------:>

1984

1985 I

1986

1987

1988

1984-88

CATEGORY

CAG!:

lEVe,l)

e%)

lEVe,l)

e%)

IEV(SI)

(%)

RIV(sl)

(%)

IEV(SI)

el)

CapU.,. (If Sold)

'10,668 12.6% $13,100 13.5% $16,550 14.0% 121,400 15.5% S27,35O 17.21

26.5%

HoD c.ptiYe

'73,850 87.4%. $83,686 86.5% $101,728 86.0% 1116,711 84.5% $132,108 82.8%

15.6%

TOTAL

$84,518 100.0% $96,186 100.0: S118,278 100.0% 1138,111 100.0% '159,458 100.0%

11.21

ID'UAL CROWTH RATE

14.S~

22.21

16.8%

SOURCE:

DEC-16

(9 Peripheral Concepts

15.5%

PERIPHERAL CO!ICEPTS, I:fC.

~~chnology

Trends

I
\.

There has been little change in the basic architecture for DEC
controllers in the last four years. Most DEC-compatible controllers
are based on a "micro-engine" concept, whereas the core of the
controller is designed with a microprocessor and firmware in read-only
memories. Using this basic architecture, a family of products can be
designed with only firmware changes. This flexibility is particularly
important where emulation of a variety of storage products is key to
success. For this reason, microprocessor based designs will remain the
backbone of future DEC controller hardware.
Storage Module Disk (SMD) drives in the 8 and 14 inch form factors
have dominated the DEC-compatible market in the past. New high speed

C"n

drives will help extend this dominance for the next three to four

years. Most SMD controllers introduced during 1985 support the faster
2.4 Megabytes/second speed. The development of drives utilizing IPI-2
interface has been slower than expected. We expect the impact of IPI-2
drives in this market will not occur until late 1987 or early 1988.
For the smaller DEC systems, high capacity 5-1/4 inch disk drives with
the ST506/412 interface are becoming popular. DEC has recently become
a consumer of 85 Megabyte ST506 drives from an OEM peripheral
supplier. This will result in a healthy growth for high performance
ST506/412 controllers, both in stand-alone and multifunction
configurations. Controllers supporting small winchesters with the ESDI
interface were introduced earlier this year. This market is not

DEC-17

(9 Peripheral Concepts
___ _______
~

..........-_~

__",__w_--.-_._. __,__ ___ ."
._~

" . _ ' • • -0 ••

_ _ _ ~_

~_'_ ... ....:..~ _ _ ,...,.-._~" _ _ _ •_ _ " - . . . . . . " _..._

...~. ._

.................. " " • • , . . - . . . . . . . - . . . _ .... ",,,,,

expected to be significant prior to the end of 1986, when volume
l

production and second-sourcing of these products begin to occur.
The 9-track Pertec tape drives remain the leading secondary storage
medium for DEC systems. This situation will not change during the next
three to four years. The TK50 tape cartridge (introduced along with
the MicroVAX-II) has had very little response. This cartridge may be
used by DEC for software distribution purposes in the future, but its
widespread usage seems unlikely.
Another promising candidate for

t~pes

may be the cartridge developed

by Electronic Processors (and second sourced by Fujitsu). But this
too, cannot succeed without direct support from Digital. A lower cost
implementation of IBM's 3480 cartridge drive has the potential to
(

become a standard in this market, but we don't expect this to
materialize before 1987-1988.
The Quarter-inch cartridge products are finding niche applications in
the Q-bus microcomputer market. Streaming drives with the QIC type
interfaces have been used with

s~me

Micro series computers, but they

have failed to capture any significant market share. In this
marketplace, cartridge drives with start/stop capabilities (such as
CDC's Sentinel and Kenned~'s 6455) are more suitable. Both controller
and subsystems products are now available for use with these tape
drives.
Standard mass storage busses and architectures are key to the
compatible controller market. With the introduction of DSA, the next
DEC-18

( ) Peripheral Concepts

8~"eration

architecture has become quite clear. To support DSA and the

HSCP protocols, more sophisticated controllers will be needed.
Future controllers will perform many more tasks than they have in the
past. At the same time, emulation requirements have become less
stringent and more predictable.

The future of the next generation "BI" bus is a bit questionable, but

it is rumored to be slated for introduction on the MicroVAX-III. The
BI may be too complex and too expensive to implement. The available
technical data on the BI

indicate~

that several LSI devices, including

s6me propietary DEC chips, will be needed to interface with the new
bus. To receive widespread after-market support, the BI must overcome
many hurdles.

(

DEC-19

( ) Peripheral Concepts

.-Competing Technologies
In the past, entering the computer business was a major venture that
only a few could afford. Traditionally, a computer company had to
develop and manufacture computer hardware, add-ons, software and
accessories. This required enormous resources. Today, many companies
develop only the key system components and integrate the rest using
standard hardware and software. By doing so, these companies can offer
added value for targeted markets without requiring elaborate
resources. Sun Microsystems and Apollo Computer are doing just that in
the engineering workstation and CAD/CAM market. This is the market
where the new MicroVAX computers are positioned. DEC faces a
formidable challenge from these "supermicro" makers who will
effectively compete against the Q-bus with their Multibus I/II and
(

VMEbus-based machines.
IBM is expected to enter the workstation market in 1986. AT&T has also
become a contender with their 3B series computers. The more
traditional DEC rivals, such as Data General and Prime Computer, will

certainly try to capture a share of this growing business with
competitive products. The ability of the Q-bus systems to penetrate

this market before the competition gains momentum is key to the future
success. DEC has the advantage of early market entry and will be
leveraged to win some key accounts.
Competition at the high end has not changed much. DEC has a
substantial share of the scientific market, primarily with the high

DEC-20

Peripheral Concepts

p.
> •

I'~·~

_____§~M_-w'1e~=-·---------

•

:11
,~

d VAlse IBM is the main competitor, followed by Data General. For
the niche markets, companies like Hewlett Packard, Perkin Elmer, and
Gould SEL offer competing products. A number of new
"Super-minicomputer" companies have been formed in the past couple of
years, but their future impact on the market remains unknown until
products are announced.
Many DEC-compatible controller manufacturers are looking at the
competing products and formulating strategies. So far, none of the
controller suppliers have made a strong committment to non-DEC
products. The VMEbus controller market has attracted the most serious
attention, but no products have yet materialized. Most suppliers are
busy concentrating their efforts to meet the challenge of supporting
DEC's new mass storage architectures.

(

DEC-21

(9 Peripheral Concepts

i l l Assumptions
o

The Introduction of several new DEC systems during 1985 will help
fuel market growth for the next four years, primarily,.from the
Q-bus based systems.

The Unibus controller market will continue to decline. The shift
towards the Q-bus will reduce overall selling prices.

The introduction of the MicroVAX line will boost the growth of
multifunction controllers, and lower projections for the tape-only
segment during 1986 and 1987.

DEC's patent claims for the MSCP will not adversely impact the
controller market.

CALENDAR 1984 MARIET SHARE
REVENUES BY MANUFACTURER

(

MARKET SHARE (%)

MANUFACTURER

Emulex
Distributed Logic Corp~
Scientific Micro Systems
Plessey Peripherals
Micro Technology, Inc.
Andromeda Systems
Sigma Informations Systems
Wespercorp
Spectra Logic Corp.
MDB Systems
Qualogy
OTHER

100.0 %

TOTALS

DEC-22
Peripheral Concepts

38.6
23.9
5.1
4.9
3.3
3.3
3.2
3.1
2.7
2.4
2.4
7.1

.Ii

(ok"

In calendar year 1984, Emulex and Dilog once again captured over 60~

of the DEC-compatible controller market. Emulex is by far the most

Share Analysis

dominant force in this market, with 38.6% share. Dilog generated more

tban four times the revenues from DEC-compatible controllers than the
next contender, Scientific Micro Systems. The rest of the market
remained quite fragmented as another nine suppliers captured between
2% and 5% of the market. Five other vendors had less than 2% market
share each.

i At
£
,

least three companies, Computer Storage Technology/E.F. Industries,

Minicomputer Technology, and Wespercorp are passive participants in
the DEC-compatible controllers. These companies have no plans to offer
~~

products into the DEC market, they are simply sustaining their

mature products. After shifting the emphasis to DEC

subsys~ems

1983, Plessey Peripherals has become active in board-level controllers
once again.
If the captive consumption were factored in, Qualogy' would rank number
i

five with its significant subsystems business. During 1985, no
significant shifts in market

posi~ions

are expected. Revenues for 1985

will be higher at Micro Technology and Andromeda, whereas Dilog will
experience some decline.

DEC-23

Peripheral Concepts

mimi WINCHESTER 0

148

L
L
Z

_ _ _ _.......... , .. _"'"".,_~"- .. "~6~·'

..... ~

;

_ _ :..;.~ •• ,."'"

""'.

mn MULTIFUNCTION

IDIil TAPE

FLOPPY

,....... <",. • • _

.........................................................................................

128

...................................................... '.,0~"'"~

100

• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • .II"I'I!'I't'I't'ft'!1"ftIo

80
60

(S)

DEC-COHPATIBLE CONTROLLERS
REVENUE StMfARy

(
<
AcroAL

REVENUPS BY PRODUC'l' TYPE ($000)

1984

FOm:AsT
1985

1987

1986

1984-88

1988

CONTROLLER TYP!

CAGR:

Winchester
Floppy
Tape

Hu1 tifunction

m($I)

(%)

m($I)

(zt)

REV($I)

(%)

REV($I)

(%)

REV(SK)

(%)

42,429

57.5

48,554

58.0

61,230

60.2

69,802

59.8

n,481

58.6

16.2%

5,670

7.7

5,':8

6.5

5,186

5.1

4,584

3.9

3,897

2.9

-8.9%

17 ,401

23.6

20,324

24.3

24,267

23.9

27,834

23.8

32,037

24.3

16.5%

8,350

11.3

9,360

11.2

11,045

10.9

14,491

12.4

18,693

14.1

22.3%

100% $132,108

100%

15.6%

100% $83,686

$73,850

TOTAL REVENUES ($000)

ANNUAL GROW"rH RAT!

100% $101,728

13.3%

100% $116,711

21.6%

14.7%

SOURCE:

Peripheral Concepts

.,£Iit.26X

i.!i

••&

DEC-24

13.2%

PERIPHERAL CONCEPl'S, INC.

r:c
W~

F1
Tl
M1

mWINCHESTER

0 FLOPPY ID]JTAPE IIID MULTIFUNCTION

148 ....................................................................................... .

,
S

(J()

129 ....................................................................................... .

lee
sa ..................................................... .
6e

....................

't.Q@'~~'

4e
28

'·'f

DEC-COHPArIBLE CONTROlLERS

SHIPMENT SUHHARY

i
~

f•

AC!'UAL

SHIPMENTS BY PRODUcr TYPE (000)

FORECAST

1985

1984

1987

1986

1984-88

1988

CONTROLl.ER TYPE

CAGR:
L~Irs(l)

W!.nchester
Floppy
Tape

Multifunction

TOTAL SHIPHE.'f1'S (000)

A.'lNUAL GROWTH RArE

(%:)

UNI1'S(I)

(%)

25.3

51.5

32.2

53.8

6.8

13.8

7.0

12.2

24.8

4.8

49.1

UNI'I'S'<[)

(%)

UNITS(I)

(X)

UNI1'S(I)

(%)

43.6

56.8

54.1

56.8

62.7

54.3

25.5%

11.7

7.0

9.1

6.5

6.8

5.6

4.8

-4.7%

15.5

25.9

19.9

25.9

27.2

34.6

30.0

29.8%

9.8

5.2

8.7

6.2

8.1

8.8

9.2

12.6

10.9

27.3%

65%

59.9

65%

76.7

66%

95.3

64%

115.5

59%

23.8%

22.0%

28.0%

24.3%

SOURCE:

DEC-25

21.2%

PERIPHERAL CONCEPTS. INC.

(;) Peripheral Concepts

HIBICOMPUTER COMPATIBLE IBTERFACES
Introduction
The success of Digital Equipment Corporation in the minicomputer
business prompted many companies to enter the market. By 1975, there
were several new start-ups getting establi&hed, each trying to take a
piece of this fast growing market. An inevitable price war began,

•

followed by a shake-out period. Many companies went out of business,
some were acquired, and others decided to stay and serve the smaller
n~che

markets. Several generations of machines had come and gone

before the shakeout settled.
Three of the major "Non-DEC" survivors were Data General,
Perkin-Elmer, and Texas Instruments. These companies had maintained
backwards compatibility throughout their various generations of
minicomputers. This not only helped them survive in the market, but
created an after-market for add-on products. In particular,
plug-compatible controllers.
The Non-DEC minicomputer market is relatively small. In 1984, the
combined revenues from the Data General, Perkin-Elmer, and Texas
Instruments controller market was $26.3 Million. Over half was
generated from Data General controllers; the balance about equally
diVided between Perkin-Elmer and Texas Instruments. Due to the
sluggish computer market over the past year, revenues will actually
deCline. Computer shipments have shown some improvements in the latter

MINI-1

@periPheral Concepts

half of 1985, resulting in a 6.5% revenue growth from 1985-1986.
Thereafter, the growth will be a steady 9.8% during 1987 and ?9%
during 1988. For the 1984-88 period, compound annual growth is
estimated at 3.8% for revenues, 7.6% for shipments. A steady decline
in Texas Instruments compatible controllers will be responsible for
this relatively low growth rate.
Each individual minicomputer controller market is primarily affected
by the performance of the corresponding computer supplier. Generally
speaking though, this market follows some of the same rules typical of
the DEC-compatible market. Erosions in average selling prices are
minimal. But ASP's are declining between 3% and 8% a year, depending
upon the category.

(

The floppy controller market for these minicomputers is totally
captive, and therefore, no after-market exists for floppy-only
controller boards. Almost all winchester controllers

suppo~t

the

Storage Module Drive (SMD) interface, with tape controllers mainly
supporting the 9-track tape Pertec interface. This will continue to be
~

the case. The following table shows revenues by function of the
Non-DEC minicomputer controller market in calendar year 1984:

Data General
Perkin-Elmer
Texas Instruments

Winchester

Tape

Multifunction

$7,415K
$3,894K
$1,525K

$4,242K
$2,376K
$ 615K

$2,105K

MINI-2

Peripheral Concepts

$4,100K

Jr.!!r.I

WiiiI
UMENTS
3S ........................................................................................

38
~.

iz.·.·.·..

Vi'

~
;lo,

(5)

is
18

HI~ICCJfPUTER

CONTROllERS

REVENUE StHtARy

(

FORECAST

1985

1984

1984-88

1988

1987

1986

CAGR:

COt.'TROLLER TYPE

REVe$K)

(X)

REV(SK)

(%)

REV~$K)

(X)

REV(SK)

(%)

REV(SK)

(X)

Data General

13,762

52.4

12,850

52.7

14,000

53.9

16,350

57.3

18,300

60.0

7.4%

Perkin-Elmer

6,270

23.9

5,891

24~1

6,630

25.5

7,210

25.3

7,860

25.8

5.8%

Texas Instruments

6,240

23.8

5,660

23.2

5,350

20.6

4,975

17.4

4,350

14.3

-8.6%

100% $28,535

100% $30,510

100%

3.8%

6.5%

9.8%

6.9%

TOTAL REVENUFS ($000)

ANNUAL GROWTH RATE

$26,272

100% $24,401

100% $25,980

-7.1%

SOURCE:

MINI-3

PERIPHERAL CONCEPTS, INC.

Peripheral Concepts

r."!!!!'!'I
Iii;iiiI

UMEHTS

••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• .r."':~":""l":'l"'l"l't

(I)

HIMICXJtPUTER. CONTROlLERS
SHIPHE.Vl' Smt1ARY

(
<
AcnIAL

1984

SHIPHENTS BY PRODUCT TYPE (000)

FORECAsT

1986

1985

1987

1984-88

1988

CAGR:

COSTROLLER -TYPE

UNITS(IC)

(~)

L'NITS(K)

(%)

l~ITS([)

(%)

UNITS(K)

(%)

L'NITS([)

(I)

Data General

5.9

51.8

5.5

51.4

6.4

53.8

8.2

59.0

9.6

62.7

12.9%

Perkin-Elmer

2.7

23.7

~.6

24.3

3.0

25.2

3.4

24.S

3.7

24.2

8.2%

Texas Instruments

2.8

24.6

2.6

24.3

2.S

21.0

2.3

16.5

2.0

13.1

-8.1%

11.4

100%

10.7

100%

11.9

100%

13.9

100%

15.3

100%

7.6%

TOTAt SKI PMENTS (000)

-6.1%

ANNUAL GROW"m RATE

11.2%

16.8%

SOURCE:

MINI-4

Peripheral Concepts

----------------_

...

_-_.

10.1%

PERIPHERAL CONCEPl'S. INC.

DATA GE.ERAL COMPATIBLE I.TERFACES

Iatroduction
Data General entered the minicomputer market in the late sixties with
the HOVA product line. In 1974, the company introduced its higher
performance Eclipse series. This was followed by the first 32-bit
offering, the Eclipse MV, in 1980. Within a short period, Data General
established itself as one of the leading minicomputer manufacturers.

In spite of fierce competition and industry shake-outs, DG has
.aintained good growth rate. Today, its revenues have exceeded the
billion dollar mark.
Data General's MV10000 system set a new price/performance standard,

(_~ut

$70,000 for each Mega Instruction Per Second (MIPS) of

performance. A new member, the MV/10000SX, was added in early 1985. A
more powerful version, the MV/12000 (which will

~ompete

with DEC's

VAX-8600) is expected to be introduced before year-end.

,
At the lower-end of the Eclipse MV line is the MV/4000SC. Introduced
in late 1984, this system is priced for the workstation market. The

company also introduced a portable, personal computer about the same
time, but it hasn't enjoyed the"success of the MV line.
All of DG's MV series computers support an operating system called the
Advanced Operating System/Virtual Storage (AOS/VS) and DG's own
version of Unix called the DG/UX.

DG-1

Q Peripheral Concepts

Market Overview/Trends
Data General machines use two standard interfaces, the Data Channel
(DCH) and the high-speed Burst Multiplexer Channel (BMC). Controllers
from independent suppliers usually connect these interfaces to
industry standard SMD disk drives and/or 9-track tape drives.
Compatible controllers also support Data General's software as well as
emulate the captive subsystems products.
Revenues for Data General compatible controllers in 1984 were $13.76
Mill~on.

This level will decline an estimated 6.6% in 1985, but will

show a moderate recovery in 1986. Market growth for the 1987-1988
period will be higher, largely due to expansion of the current product
line. Total revenues are expected to reach $18.3 Million annually by
1988. Compound growth rate over the forecast period will be 7.4% for

revenues, 13.1% for shipments.
Winchester controllers led the 1984 market, accounting for' 53.9%
revenue share, followed by tape controllers with 30.8% share.
Multifunction controllers

account~d

for 15.3%, but significant growth

is expected in multifunction products over the next four years. For
1985, an estimated 28.5% of

~evenues

will be generated by

multifunction products.
While support of high performance SMD drives will continue over the
next three years (especially those controllers supporting the 2.5
Megabytes/sec data rates) smaller drives with the Enhanced Small Disk
Interface (ESDI) interface will appeal to the low-end user. In 1987,

o
•

.·0"0

DG-2
Peripheral Concepts

.....

£4 ••

---

..--.-- ....... .

"1.:. . --__

,,~i.,r;..aor*·IliiIiiIiie>:!-·.·t-t'',_W?_

._-,,-.

",.--~-

I
~

ID estimated 8% of all controllers shipped will support the

ESDI

iDterface. In the area of tape, use of 9-track drives will continue to
dominate this market, as the QIC type cartridge drives are expected to
have a small impact.

I
,;

•t

f•
~,

(

i
j;

~~r

DG-3

Peripheral Concepts

Product Definition
Products and forecasts within this category refer to contr~ller

(

board-level products that have a Data General minicomputer compatible
host interface, and various drive interfaces for peripherals. Examples
of products and manufacturers in this category include:

(

Aviv Corporation

TFC 712, 715, 716

Bytronix

B234, 450, 455, 505, 525

Computer Storage Technology

15X12, 3512

Mini Computer Technology

MCT 20XX & 24XX Series, EDC22
SMC 12/902, TDC 802

Spectra Logic Corp.

Spectra 10, 20, 30
Spectra 17/27/120/210 Plus

Wespercorp

DC221, TC120

Zetaco

DC 295/297, TC-133
BMX-1/2/3, ZDF-1

Market Share Analysis
In 1984, Zetaco was the leader in the DG compatible controller market

•
with a 31.4% share, followed by Spectra
Logic with a 22.6% share. It
is expected that these two manufacturers will continue to hold over
#>

50% of the market through 1985. Wespercorp is the third largest
supplier, as most of its

~evenues

come from older products. Bytronix

performed well at the lower-end, with controllers for the ST506/412
type disk drives and QIC-02 compatible tape

dr~ves.

Although Mini

Computer Technology offered two new products last year, the company's

DG-4

(9 Peripheral Concepts

~------

..-------------------""""""""'-.-'"''''''--''''''''.'

,~'!""'-,,-

future emphasis will be on microcomputer controllers. Computer Storage
Technology/E.F. Industries is a passive participant in this market,
inheriting many of their products from the old Datum line.

Zetaco was also the leader in the winchester-only configuration, with

!•

nearly 40% market share. Spectra Logic dominated the multifunction
configuration, with almost half the revenues for this segment. In the
area of tape-only controllers, Wespercorp, Aviv, and Zetaco each held

,.,

i
J

about 20% share. With many new products introduced this year, we

expect bQth Spectra Logic and Zetaco to strengthen their respective

e
l

positions in the winchester-only and multifunction categories.

~
f

CALENDAR 1984 MARlET SHARES
REVENUES BY MANUFACTURER

(

MARKET SHARE (%)

MANUFACTURER

31.4%
22.6%
11.6%
11.4%
7.1%
6.1%
9.8%

Zetaco
Spectra Logic
Wespercorp
Bytronix
Aviv Corp.
Mini Computer Tech
OTHER

100.0%

TOTAL

DG-5

Peripheral Concepts

PEI~IK-ELMEI

COMPATIBLE IKTEIFACES

Introduction
Perkin-Elmer systems are really descendants of Interdata, the company
that is credited with the introduction of

~he

first 32-bit

minicomputer. The original Interdata 7/32 and 8/32 computers made the

32 bit minicomputer popular at the high end. In 1974, they were
replaced by the 3200 Series. Traditionally, Perkin-Elmer computers
have dane well in the scientific

~arkets,

particularly for simulation

applications. The company also offers Unix based systems for the low
end, but these have not been as successful as the 3200 products.
The latest emphasis at Perkin-Elmer is on parallel processing
(

capabilities. Multi-processing systems have been offered by P-E for
about three years now, and two new members were added to the 3200MPS
family in 1985. Recently, the company announced the top of the line
3280MPS known as the "Cruncher".

•
Perkin-Elmer computers use two interfaces,
the Multiplexer Channel and
the Selector Channel (SELCH). Independent controller suppliers offer
disk and tape controllers that connect both of these P-E busses to
industry standard disk and tape drives.

PE-I

Q Peripheral Concepts

-~.~-.---

Examples of products and manufacturers in this category include:

Computer Storage Technology
Macrolink
Mini Computer Technology
Spectra Logic Corp.
Wespercorp

15X42
201800, 201100, Macro-3
TDC803/813, SMC 903
Spectra 14, 34
TC-140

Market Trends/Forecasts
Total revenues from Perkin-Elmer compatible controllers for 1984 were
,

$6.27 -Million. The market will remain virtually flat in 1985. The
introduction of several new systems and controller products will cause

a 12.5% growth in 1986, but this is likely to stabilize at a 9% level

in the following two years.

(

Most of the growth will come from high performance disk controllers.
f

SMD disk drives with 2.5 and 3 Megabytes/sec speeds are becoming

popular for P-E machines. Since most P-E controllers are targeted at
i

high end applications, disk controllers for the smaller drives will
\

not find widespread acceptance. The 9-track Pertec interface will
continue to dominate tape controllers. Since the Perkin-Elmer

architecture cannot support multifunction controllers, this segemnt
does not exist in the P-E

(

....

o
", ....., . -

w~rld.

PE-2

Peripheral Concepts

(
CALENDAR 1984 MAllET SHARES
IEVENUES BY MANUFACTUIER
MANUFACTURER

MARICET SHARE (%)

Spectra Logic Corp.
Macrolink
Wespercorp
Mini Computer Tech
OTHER

44.6%
28.4%
11.9%
2.0%
13.1%

TOTALS

100.0%

In calendar 1984, the P-E compatible controller market was dominated
by Spectra Logic and Macrolink. Spectra Logic had the lion's share of

tnchester-OnlY controllers with 71.8% of revenues, while Macrolink
lid the tape-only category with a 65.2% share. Wespercorp accounted
for 11.9% of revenues, mainly on the strength of its older tape
controller product line. Mini Computer Technology is simply sustaining
its earlier .SMD products.

PE-3

Peripheral Concepts

TEXAS IRSTRUHEHTS COMPATIBLE IHTERFACES

{
After-market suppliers have long been offering disk, tape, and
multifunction controllers for TI's 990 and 600 series minicomputers.
Lately however, Texas Instruments seems to be de-emphasizing the
minicomputer market in favor of microcomputers systems. The controller
market for TI computers will continue to

~ecline

over the forecast

period. Revenues for this category, which totalled $6.24 Million in
1984, will drop to an estimated

$4.~5

Million by 1988.

Controllers currently available for Texas Instrument minicomputers
include:
Spectra 16, 26, 36, 46

Spectra Logic Corp.

Spectra 116, 126 Plus
Zetaco

990-SMD+, MZT-3

Spectra Logic is the leading after-market supplier of TI compatible
controllers with a 75.3% share in 1984. Spectra was also the sole
source of multifunction controllers, which accounted for 65.7% of the
total revenues for the same period. The company also supplies the
captive controller needs for Texas Instruments. Zetaco was the second
largest supplier with a 17.3% market share.

TI-1

@ Peripheral Concepts
,

. . . . ~-' ",,--~ <¥'""":;'I'!;.,?"'~~

•

.1M ,.,..,.,. ....''"~~i!:'!
-.-

._.

"". -.-.. ....-_. '"

.._. __ .___.. _...____..._~. __ ._ ..~_____ J
t ..

THE MULTIBUS BOST INTERFACE

Introduction
The Multibus interface was first defined by Intel Corporation (Santa

Clara, CA) for use within the company's microprocessor development
systems. It was formally named "Multibus" in 1976 when Intel
introduced the iSBC 80/10 single board eomputer. The bus
specifications were placed in the public domain, making it one of the
first "open architecture" microcomputer busses. This prompted the
development of new products and applications. Many after-market
suppliers entered the Multibus compatible industry, offering CPUs,
memory boards, controllers, and other system components. By the end of
the 1970's, the Multibus interface became the most popular

C-

microcomputer bus. Nearly fifty independent vendors were supplying a
variety of products.
Today, that number has more than quadrupled. In 1983, the Institute of
Electric~l

& Electronics Engineers approved the-Multibus as its
•

lEEE-796 standard, further promoting the bus by establishing clear
standards guidelines.
Hultibus fits into "mid-range" systems. Typical Multibus systems are
smaller and less powerful than traditional minicomputers, but offer
higher performance than personal computers. Most initial Multibus

applications were in the scientific computing, graphics system, and
industrial process-control segments. Today, the Multibus dominates the
MULTIBUS-1

@periPheral Concepts
.. -"""",-

·.rl.illtr_
....·'¥fiet
.·.·...

-_ _ _
,
O.
I I.
· ..

0 ...
' ....
' ____
..........."'.... ~"'~~ ......... ~-I;;.• .

supermicro computers used in engineering workstations and CAD/CAM
applications.
Multibus has gone through many changes and enhancements Over the
years. The interface started as an eight bit bus, reflecting the bus
size of microprocessor chips at that time. Later, when sixteen bit
microprocessors emerged, the Multi bus specifications were upgraded ::
support the new bus width. Today, the Multibus (or Multibus-I as it .
sometimes called), is actually a set of busses. In addition to the
system bus, it consists of other I/O busses such as iLBX, iSBX,
Multichannel and Bitbus. These are described later in this chapter.
The evolution of Multibus continues. In response to the new breed of
32 bit microprocessors, the next generation bus, called the

(

Multibus-II, was defined in October 1983. Multibus-II is a powerful
bus that supports 32 bit wide data paths and advanced architectural
features such as multi-processing.
In addition to the standard system components like CPUs, memories, an:
controllers, a variety of application-specific hardware and software
have been developed. These include Math Processors, Analog to Digital
Converters, Communications-Processors, Speech Recognition Boards, and
Graphics Controllers. Two operating systems, Xenix/Unix and Intel's
iRMX, are the most popular for Multibus systems. A wide range of
applications software is now commonly available.
Many integrated circuits have been developed to support the original
Multibus. Semiconductors are available from Intel, Advanced Micro

MULTIBUS-2

Peripheral Concepts

Devices, Zilog, Siemens, and others. Two LSI devices for the
~

tibus-I I have already been defined by Intel; a Bus Arbiter

Controller (BAC) and a Message Interrupt Controller (MIC). NCR
Corporation and Siemens are also getting ready to offer additional
devices for Multibus-II. Although Motorola is backing its own VMEbus,
a significant number of Mu1tibus products use Motorola's 68000
microprocessor.

Bitbus

Interconnect

==========

Multimodule

1SBX
I/O
Memory

Controller

FIGURE 3.1
MULTIBUS SYSTEMS ARCHITECTURE

MULTIBUS-3

Q Peripheral Concepts

Bus Characteristics - Multibus-I

I ~

The Multibus system bus is an asynchronous bus that permits 8 or 16
bit data transfers. A typical Multibus module has a form factor of
6.75 inches long and 12 inches wide, with a set of signals on two

ed~

card connectors. The first connector (PI) has 86 pins and contains
most system bus signals. A second connector (P2) has 60 pins and
contains four address extension lines plus room to implement the iLBX
bus.
There are sixteen bi-directional data lines used for 8 or 16 bit
transfers. There are also 24 address lines which provide direct access
to up to 16 Megabytes memory. Data and address lines are not
multiplexed, they are physically separate signals. Nine control lines
carry system clocks, master/slave communications signals, and reset
(

lines. In addition, there are eight dedicated interrupt lines and one
interrupt acknowledge line. For bus control and arbitration, six bus
exchange lines are provided. The arbitration process is centralized
for the Multibus-I.
Several I/O busses have also been defined for the Multibus system. For
direc t access to memory, the L.ocal Bus Extension ("iLBX") is used.
This bus off-loads the system bus and provides high speed access to
the memory. The "iSBX" expan"sioQ. bus is used to connect smaller
circuit cards called "multimodules" to the CPU board. The iSBX
provides additional functionality without replacing an entire module.
The "Multichannel" I/O bus provides a separate data path for DMA type

MULTIBUS-4

Peripheral Concepts

(

rIO

activities. Similar to the SCSI concept, this bus can relieve the

bost of I/O overhead. A serial bus called the "Bitbus" has also been
defined, primarily for industrial control applications.

Bus Characteristics - Multibus-II
Hultibus-II retains all of the basic signal characteristics of
Multibus-I. The structure for auxiliary busses is also similar. The
Parallel System Bus ("iPSB") and the Local Bus Extension ("iLBX-II")
are

simi~ar

to the system bus and the iLBX for Multibus-I, except

these are 32 bits wide. Multibus-II also has a Serial System Bus
("iSSB"). The I/O expansion bus (iSBX) and the Multichannel are
exactly the same as those for Multibus-I. A typical Multibus-II system
(

is shown in Figure 3.1.
There are however, other differences between the two busses.
Mechanical dimensions are different, so one can not upgrade to
Multibus-II simply by interchanging boards. The Multibus-II modules
use the Eurocard form factor with DIN connectors.to the backplane,
rather than card edge connections.
Multibus-II can support 32 bit· wide data paths, unlike the 16 bit

limit of Multibus-I. But Multibus-II does not physically separate the
data and address lines, but time-multiplexes the two on the same set
of pins, adding parity to enhance data reliability. Multibus-II also
implements a synchronous protocol (which increases noise immunity),
but this imposes a top limit on the throughput. However, the maximum

MULTIBUS-5

Q Peripheral Concepts

bandwidth of 40 MBytes/second is more than adequate for today's

I
I

supermicro systems.
(

The arbitration process is "distributed" for Multibus-II as opposed:

the centralized scheme used by Multibus-I. Distributed arbitration

!'
II

allows as many discrete levels of arbitration as there are slots in

the system. Interrupts are virtual and not dedicated. This means

!i
I

rather then sending interrupts on dedicated lines, they are written

I I
I l
. j

into designated memory locations. Multibus-II also permits data
transfers in bursts, thereby improving bus utilization.
In addition to the basic specification, the Multibus-II architecture
also defines a message-passing protocol. The hardware definition of
this protocol will help resolve some confusion that can arise in
multi-processing environments. Overall, Multibus-II incorporates many
(

advanced architectural features that will support the next generation
of supermicro computers.

(

MULTIBUS-6
( ) Peripheral Concepts

j;;.--.

Product Definition

(
Products and forecasts within this category refer to controller
board-level products that have a Multibus-I or Multibus-II port for
host communications, and various drive-level interfaces for peripheral
control. The majority of controllers on the market today are
Multibus-I compatible.

Examples of products and manufacturers in this

category include:

(

Aviv Corporation

TFC 505

Central Data

CD21/4XXX Series

Ciprico

Rimfire

Comark

MT80, 86, MF85

Data Technology Corporation

5186, 5286, 5486

Intel

iSBC 2XX Series

Interphase Corporation

SMD21XX, Storager

Konan

Taisho 6000

Mini Computer Technology

4300, 4500, 4510

Qualogy

Ramtrac Series, MicroCharge

Scientific Micro Systems

FWD 800X Series

Wespercorp

MB-506, MB-SMD, MB-QIC2

Xylogics

4XX Series

& Tapemaster

Series

MULTIBUS-7

( ) Peripheral Concepts

Market Trends
Peripheral Concepts estimates the total market to be:

(

1984
REVENUES

1987

1986

1985

1988

46,4811

47,5501

55,8801

66,9001

78,060K

39.21

41.11

50.81

64.91

78.9K

SHIPMENTS

The Multibus controller market for 1985 will essentially remain flat,
both in terms of revenues and shipments. Future growth projections
have. been revised on the downward side. The primary reason is the
lower than anticipated level of support for Multibus-II. New design
activities have been slow, both at Intel and at the independent
controller houses. This delay will force some system manufacturers to
switch to competing busses, particularly the VMEbus.

(
We still expect the Multibus-I/II controller revenues to grow through
1988, but at a slower, compound annual rate of 13.8% from 1984 through
1988. Shipments for the same period will grow at a brisker 19.1%. A
peak

year-to-year revenue growth is expected at 19.7% from 1986-87.

Thereafter, the year-to-year growth rate will slow down slightly to
16.7% for the 1987-88 period: Declining ASP (Average Selling Price)
will keep the growth in unit shipments moderately ahead of revenue
growth. From 1987-88, shipments will grow a solid 27.6% on a
year-to-year basis.

o
~\.--- --

MULTIBUS-8
Peripheral Concepts

'.-._-

...

__._-----

- _..•.-

- " - ' _.

. ...........

__.

(

is important to note that although we have lowered our growth rate

projections, the absolute size of the market is larger than our 1984
forecasts. This is primarily due to the inclusion of non-captive
Multibus products manufactured by Intel and Scientific Micro Systems.
Consequently, equivalent revenues for calender 1983 would have been
$33.7 million, instead of the $18.6 million reported previously. The

1985-88 revenue and shipment forecasts must therefore be interpreted
accordingly.
Multifunction controllers will exhibit the most impressive growth,
followed by the winchester-only products. Multifunction controllers,
which made up 25.8% of all shipments in 1984, will account for an
estimated 43.2% of all units shipped in 1988. Revenues for the

(

winchester-only and tape-only segments will grow at compound annual
rates of 8.3% and 10.9% respectively from 1984 through 1988. New
products supporting emerging disk and tape interfaces will keep the
single function controllers from being replaced by the multifunction
boards. However, shipments of floppy-only controllers will continue to
decline over the next four years at,a compound arinual rate of 11.1%.
This decline will be particularly strong from 1987-88, with an
estimated 18.9% on a

year-to-y~ar

basis.

Most new SMD (Storage Module" Drive) disk controllers will support the
higher transfer rate disk drives from Fujitsu and Control Data. Such
enhancements will hold the price erosion for Winchester controllers at
a compound annual rate of 5.9% from 1984 through 1988. By mid-1986,
most vendors will offer controllers supporting the ESDI interface.
MULTIBUS-9

Peripher~1 concepts

However, it is expected that revenues from ESDI controllers will
remain under 10% of the total market for 1986. The proliferation of

I"
I

I" i

I !

cartridge tape drives will cause ASP's for tape-only controllers to

decline 13.5% from 1985 through 1987.

The Multibus controller business was predominantly an OEM business

1984, and will remain so in the coming years. The majority of
Multibus-based peripheral controller buyers are system integrators a::
VARs (Value Added Resellers) rather than end-users. They accounted

almost 87% of all Multibus controllers sold in 1984. Less than 10%

all.products were sold through distributors in this same period.
Manufacturers in the workstation and CAD/CAM markets represent the
high volume users of commercially available Multibus mass storage
controllers. These include Apollo Computer, Sun Microsystems, and
Prime Computer.

(
There is very little captive activity in the Multibus market.
Companies such as Qualogy, Intel, and Scientific Micro Systems do
offer Multibus subsystems using their own controller boards, but the
number of units consumed by subs,stems is small when compared to the
overall market. In the area of tape, Aviv Corporation offers
tri-density tape subsystems·using captive controllers. Other market
leaders including Xylogics, Ciprico, and Interphase currently do not
offer Multibus subsystem products.
With increasing levels of sophistication, controller development
programs are costing more and taking longer to complete. Consequently,

(

MULTIBUS-IO
Peripheral Concepts

--------•t

some Multibus suppliers have opted to acquire certain products to

(

round out their product lines, rather than develop everything
in-house. Intel for example, has been known to private label SMD disk
controllers from Xylogics. Such second-tier market activities will
benefit the end-users by providing alternate sources for some popular
products. Advanced Micro Devices has left the Multibus add-on market
this year, licensing their products to Central Data Corporation.
Host future supermicro designs will be based on 32 bit busses. Thus,
the use of Multibus-I will certainly decline. In order for Multibus-II
to win future designs, a strong support from Intel and the major
after-market suppliers will be required. During 1985, Intel has been
less than aggressive in promoting the Multibus-II. The number of
silicon products and board-level designs introduced so far, have not

(

been adequate to insure market success. Unless this situation changes
within the next 18-24 months, Multibus-II will miss a critical market
window.
The Multibus market as a whole is still large and growing. It will
account for approximately 39.7% of the 1985 market for supermicros and
low-end minis. This is indeed a huge installed base to draw from.

MULTIBUS-11

C)'periPheral Concepts

Technology Trends
I

There are currently no technical changes taking place in Multibus

I It

I I!

controller architectures. Most of the new design activity is aimed a:

!I I,

providing added functionality and higher performance. To that end,

t:.

controllers are constantly striving to keep up with the advances in
computer architecture as well as higher-speed peripherals.
New SMD controllers are supporting the 2.4 Megabytes/second data rate:
of the Fujitsu Eagle-IP disk drive. Some are even targeting to the 3
Megabytes/sec speed of the newer Control Data drives. Many controller
vendors are getting ready to offer products supporting small
winchesters, particularly, those products with the ESDI interface. We
don't expect a significant number of 10 Megabit/sec type ESDI drives
to ship in 1985. Next year however, there will be a definite market
(

for ESDI controllers. It should be noted that developing an ESDI
controller is not a particularly difficult task, since

t~e

data

separator (which is the most technically-difficult portion of today's
5-1/4 inch ST506/412 disk controller designs) resides within the disk
drive.
Winchester controllers will. continue to use on-board cache memory and
other techniques to meet the faster access time requirements of
supermicros. Clever buffering schemes will remain popular to support
non-interleaved disk operations. Features to improve reliability, such
as defect management and transparent error processing, will also
become standard on most winchester disk controllers.

MULTIBUS-12
Peripheral Concepts

- - - - - - - - - - - - - . - - - -..------=--".=~~~~-~-- ..

Tape controllers for the 9-track "Pertec" interface remain the revenue
leader, generating 88.6% of tape controller revenues for 1984.
Although this is an older technology, and the drives are too bulky for
today's smaller systems, a large installed base and universal format
compatibility (IBM/ANSI) has protected this market. However, the
smaller 1/4 inch cartridge tape drives are certainly gaining
acceptance, including the QIC-02, 3M's RCD-7S, and Kennedy's Pico-bus.
But data interchange is still difficult to maintain, as these products
do not have any format compatibilities. The added intelligence of
these interfaces also makes the drives more expensive. Eventually, we
expect the cartridge drives with the device level QIC-36 interface
(and QIC-24 format) to be more popular than the other versions.
IBM's 3480 cartridge is a very promising candidate for eventual

C replacement

of 9-track tapes. Both the drive and the formatter

complexities will have to be reduced for a lower cost implementation
of the existing 3480 technology. Considering. the technical challenges,
controllers for the 3480 type drives will not be widely available
until 1988. In the meantime, both the 9-track reels and the 1/4 inch
cartridges will continue to serve the Multibus market •

•

The majority of floppy controller chips now available incorporate
on-chip data separation.

Th~s,

the floppy function can be easily

accomodated on the CPU or winchester controller boards. As a result,
the stand-alone floppy controller boards will experience a sharp
decline over the next several years.

(
MULTIBUS-13

Peripheral Concepts

Reductions in controller circuitry, using gate array and standard-ce'
"

technologies, is opening up more "real estate" on

controll~rs

that

will likely be used for additional functions. For example, many new
multifunction controllers now support winchester and tape drives on a
single board. As the use of SMT (Surface Mount Technology) grows,
combinations of memory, mass storage control, and networking will als:
become possible. But due to the added complexities on these new
products, features like power-up confidence test and self diagnostics
will become necessary for easy fault isolation.
Some Multibus suppliers (Intel included) are providing the Small
Computer Systems Interface (SCSI) to the CPU board. The SCSI port
allows users to connect off-the-shelf SCSI controllers arid "generic"
peripherals to satisfy mass storage requirements. While this method
(

simplifies system integration and expansion, the presence of an
intermediate bus can degrade overall system performance. Consequently,
use of SCSI will not be very popular in high performance Multibus
systems.

•

Peripheral Concepts

MULTIBUS-14

fompeting Technologies

(
Traditionally, the Multibus has been an OEM microcomputer bus. It has
competed primarily with Digital Equipment's Q-bus. But the competition
has not always been so direct. The Q-bus began as a 16 bit
minicomputer bus and was positioned above the earlier Multibus
applications. The Multibus has largely been a system integrator's bus.
Systems components are typically fitted together for a specific
Multibus application. Therefore, in the past, the two busses have
managed to serve different niches.
This may not be the case in the future. Newer Q-bus based computers
from Digital Equipment are targeted at the workstation market, which
up until now has been a Multibus territory. DEC's pricing for the new

(

MicroVAX and the MicroPDP computers has been very aggressive. With a
strong marketing push, DEC can become a significant factor in the
workstation market. During 1986, expect IBM to offer a product to
address this segment as well. Multibus is likely to have a tough
uphill battle to retain its dominance over the long term.
Another area where the Multibus has done well is in industrial process
control. In this arena, the

S~D

bus has been the main competitor

against Multibus. The STD offers compact size and a lower cost
implementation, but it is an older standard in desperate need of
upgrading. The VMEbus, which has done very well in Europe, is now
challenging the Multibus in the U.S. industrial control market.

«
MULTIBUS-15

Peripheral Concepts

The VMEbus is also a formidable challenger for the next generation t

bit supermicro busses. It has already made impressive in-roads into
this market. ley design-ins have been won at leading companies in the

workstation and CAD/CAM markets. Technologically speaking, the VMEbus

is not any more or less superior to Multibus-II. Although there are

architectural differences, both busses are well suited for the next
generation supermicro needs. However, the VMEbus has quickly
capitalized on its success in the European market. Stable
specifications and establishment of the manufacturer and user groups
has helped the VMEbus gain considerable momentum in the past two
y~ars.

Many traditional Multibus controller maufacturers like

Xylogics, Interphase, and Central Data, are supporting the VMEbus in
addition to Multibus-II.
Even with a strong challenge from the VMEbus, Mu1tibus-II can still

c--

bounce back. It enjoys a large installed base of loyal Multibus users.
It now needs a strong marketing push. Intel must take a leadership
role and finalize all specifications

wi~hin

the Multibus-II

architecture. It must also get support through a wide range of board
and silicon products to gain

b~ck

the lost ground. Capturing the 32

bit supermicro market now hinges more on marketing savvy and solid
product support rather thaA just on technical merit.

MULTIBUS-16

(
( ) Peripheral Concepts

or
;

~
•.' ..'

(~rA::::m::::::ing the sluggish computer industry

'.'

•

i
.

1985, the

Multibus controller market will recover in 1986. Introduction of
Multibus-II based silicon and board products will help the market

in 1986/87.
Momentum gained by the VMEbus and introduction of the MicroVAX-II
viII slow the growth for Multibus-II products.
Wider acceptance of multifunction controllers will cause a decline
in the growth of single function controllers beginning in 1986 •

1
'I'

I
f (

CALENDAR 1984 MARIET SHARE
REVENUES BY MANUFACTURER
MARKET SHARE (%)

MANUFACTURER

I
!

Intel
Xylogics
Ciprico
Interphase Corporation
Qualogy
Scientific Micro System~
Data Technology Corporation
Central Data
Others
TOTAL

26.9
24.0

17.3
10.1
9.3
4.7
3.4
2.3
2.0

100.0

MULTIBUS-17

Peripheral Concepts

:I
I

Market Share Analysis:

quarter of the total revenues. Intel was by far the leader in FlopP!

Intel was the 1984 market leader in Multibus controllers with

OVer I

only controllers, almost ten times larger than the nearest competitc:

in that category. Xylogics was a close second in overall market

with a strong position in Winchester only controllers. Ciprico

shar!
was to_.

leader in Tape only controllers with over 70% share of that market
segment. In the Multifunction category, Qualogy shipped the most
controllers, followed by Scientific Micro Systems.
Interestingly, in all categories except multifunction controllers,

t~!

first two market leaders controlled more than 75% of the total market
for that category. In the multifunction category, it first took five
players to make up the 75% market.

(For calender year 1985, Peripheral Concepts expects Xylogics to
further strengthen its position in the Winchester controller market.
We expect Intel's shipments of Floppy only controllers to decline.
However, its Multifunction contrqllers will show significant growth.
The Multifunction controller market will continue to be shared by
multiple vendors in 1985/86 •• They include Qualogy, Scientific Micro
Systems, Intel, Xylogics, Interphase and Data Technology Corporation.

----

MULTIBUS-18
Peripheral Concepts

--------

------- --------------

------------- ----- - ---

_.........--_.

_'~~~I"------------

mm WINCHESTER Ill] FLOPPV CJ TAPE IlD MULTI FUNCT ION
1IS ....................................................................................... .

\".

($)

....•..........•......•...•........................

.. .•................................

75 .............................................................•.........
60 ....•..................•.••.•••....•.•.••.......•.....

45
38
15

:-tULTIBUS CONTROLLERS
REVENUE StMiARY

C
<--

REVE~ES

AmAL

1984
CO~1'ROLLER

BY PRODUCT TYPE ( $ 0 0 0 ) - - - - - - - - - - - - - - - - - - - - >

----->

FORECAST-

1985

1986

198,,-98

1988

1987

CAGR:

TYPE
REV(SK)

(%)

REV(SK)

(%)

REV($lq

(%)

REV(SK)

(%)

REV(SI')

(;;)

20,180

43.4

21,300

44.8

23,450

42.0

26,600

39.8

30,560

39.1

lO.9~

Floppy

6,842

14.7

6,180

13.0

5,830

10.4

5,050

7.5

4,150

5.3

-11.7%

Tape

7,966

17.1

8,120

17.1

9,000

16.1

9,950

14.9

10,950

14.0

8.3~

II ,493

24.7

11,950

25.1

17,600

31.5

25,300

37.S

32,400

41.5

29.6%

100% 547,550

100%

555,880

100%

$66,900

l00~

S79,060

lOO~

13.8%

I>ir.chester

Multifunction

TOTAL

REVE~rES

(SOOO) • 546,481

ANXl'AL GROI.'Tl1 RATE

2.3%

17.5%

19.iC:

SOURCE:

MULTIBUS-19

16.i~

PERIP!lER.\L (OSCEPTS, I:-:C.

Peripheral Concepts

.. .. ~

".-,

--.. ~

"'"

....

... ,~.

-"-

.'--

. ,., ....

III WINCHESTER IlII FlOPPV CJ TAPE DB MUlTIFUNCTIOH
1"~

....................................................................................... .

...•...•..........•.••..••..•••.•..•....•......••.....•.•••.••.............•..•.........

t'~

.....................•....••...•............................•..........

68 ..................................................... .
45 .................................... .
38
I

1S
5

MULT!BI!S CONTROLLERS
SHI~IENT

(

SUMMARY

:---.

--SHlp:·!ENTS BY PRODUCT TYPE (000)

.'CTUAL

1984

- -

FORECAST

1985

1986

1987

:1984-88

1988

C.-\GR:

CO:-''TROLLER TYPE
L'XITS(K)

(%)

l~ITS(IC)

(%)

!..'~ITS(K)

(%) lINITS(K)

(%) UNITS(K}

(%)

14.1

36.0

15.6

38.0

~8.1

35.6

22.3

34.4

;::7.1

34.3

17.7%

Floppy

8.6

21.9

8.2

20.0

7.8

15.4

6.6

10.2

5.4

6.8

-10.9%

Tape

6.4

16.3

6.7

16.3

8.6

16.9

10.9

16.8

12.3

15.6

17.7%

Multifunction

10.1

25.8

10.6

25~8

16.3

32.1

25.0

38.6

34.1

43.2

35.6%

TOTAL SHIPMENTS (000)

39.2

100%

41.1

100%

SO.8 . 100%

64.8

100%

78.9

l00~

19.1%

5.0,"

23.6%

Winchester

A:-'~UAL GRO~1H

RATE

27.6%

SOURCE:

MULTIBUS-20

Peripheral Concepts

21.8%

PERIPHERAL CONCEPTS, INC.

KJLnsos

CONTROLLERS

REVENUES BREAIOOWN BY DIIVE DlTERFACB

(

AcroAL

REVENUES BY PRODUC'l' TYPE ($000)

)

FORPaST

1986

1985

1984

1987

1988

1984-88

:;r.a.r1tC! T1'P!
REV($I)

(%)

REV($I)

(%)

REV($()

(%)

REV($()

(%)

REV($I)

(%)

4,319

21.4

4,303

20.2

4,244

18.1

4,389

16.5

4,645

15.2

ESDI

0.0

746

3.5

1,946

8.3

4,096

15.4

6,295

20.6

•
ou.r

IS,3S7

76.1

16,039

75.3

17,072

72.8

17,902

67.3

18.978

62.1

504

2.5

213

188

213

642

2.1

100% $30.560

100%

~ter

Only:

mo6

mAL REVENUFS ($000)

$20,180

100% $21.301

1.0 -

100% $23.450

10.1%

5.6%

AllMUAL GROWTH RAT!

100% $26,600

1.8%

5.4%

10.9%

14.9%

13.4%

(
Tape Only
QIC

Pertec

Other

TOTAL REVENUES ($000)

ANNUAL GROWTH RATE

REV($I)

(%)

REV($()

(%)

REV($I)

(%)

REV($I)

(%)

REV($I)

(%)

709

8.9

926

11.4

1.215

13.5

1.582

15.9

l,SOO

13.7

20.6%

7,058

88.6

6.934

85.4

7.470

83.0

7,761

78.0

7,709

70.4

2.2%

199

2.5

260

3.2

315

3.5

607

6.1

1,741

15.9

72.0%

$7.966

100%

$8,120

100%

$9,000

100%

$9,950

100% $10,950

100%

8.3%

1!'J%

10.6%

10.8%

10.1%

SOURCE: PERIPHERAL CONCEPTS. INC.

MULTIBUS-21

Peripheral Concepts

-·~r

...

THE VHEBUS HOST INTERFACE

Introduction
Before the mid-seventies, computers were designed around proprietary
interfaces. The era of the so called "open ftrchitecture" did not begin
until the advent of microprocessors. These powerful devices made

• new applications. To aid
computers more affordable, opening up many
the development of new microprocessor-based products, semiconductor
vendors.often provided development systems. The interfaces used on
these systems were usually placed in the public domain. Many system
integrators and after-market suppliers eventually developed their own
products based on these interfaces. Intel Corporation's Multibus was
the first such "open architecture" with its roots in a microprocessor
( - development system.
The VMEbus is a second generation microcomputer interface. Like the
Multibus, it was initially defined by a microprocessor manufacturer,
Motorola S-emiconductor Products in Ppoenix, Arizona. The predecessor

of the VMEbus is known as VERSAbus. This interface was first promoted
by Motorola in 1978 as a system bus for the MC68000 microprocessor
development system. VERSAbus was designed to take advantage of

powerful architectural features of the 16 bit MC68000 microprocessor,
'nd to provide an easy migration path to upcoming 32-bit systems.

The VMEbus was actually born as a result of the European effort to
proaote a physical board standard (IEC297-3) for use within the EEC.

VME-l

@ Peripheral Concepts

In 1980, Motorola in Munich, Germany worked actively to define a
version of VERSAbus to fit within the popular Eurocard format. In
1981, this bus was formally announced as the Versa Module Europe,

VME, at the Hanover Fair in Munich. The final bus specifications for
the VME were jointly developed by Motorola, Mostek, Signetics
(Philips), and Thomson-EFCIS. Standardization of the VMEbus via IEEE
is currently being pursued by the P1014 committee.
The VMEbus has quickly gained popularity in Europe. Most initial
products that first appeared in the early eighties, were primarily for
industrial process control applications. In the United States, VME is
just beginning to make its mark. The "generic" products, such as
Single Board Computers (SBCs) and memories, were the first to emerge.
There are now many "application-specific" products. By the end of
1985, over a hundred vendors will be supplying various components for
VME systems worldwide. A user/vendor group has also been formed in the
u.S. (V.I.T.A.) to further promote the market for VMEbus products.
VME carries no patents or trademarks. The specifications are not
copyrighted. Anyone can use the VMEbus to develop new products without
obtaining a license or paying any royalty fees.
The size of today's VME controller market is small, but growth
projections are

impressive~

As with any emerging standard, there is

some confusion about the capabilities of the VMEbus. To help
understand the pros and cons, a detailed technical discussion of the
VMEbus architecture has been included in the following section.

{

VME-2

Peripheral Concepts

"'chnical Characteristics
Figure 4.1 depicts the various signals of the VMEbus. A single wide

VME board uses one 96 pin DIN connector (PI). All data and control
lines for a 16 bit VME system reside on this connector. A dual wide
board has·an additional connector (P2) which allows expansion to a 32
bit system. Functionally, VMEbus signals can be divided into four
categories - Data Transfer Bus, Arbitration Bus, Interrupt Bus, and
Utili ty Bus.
Data and Address Paths: VME can support data paths of 8, 16 or 32 bits
wide. Data is transferred over lines DOO thru D31. DOO-DIS are on the
PI connector, whereas D16-D31 are on the P2 connector. The width of
the data path is determined by the logic levels of LWORD, AOl, DSO,
(

ld DSI lines.
The address is transmitted over thirty two (AOI thru A31) address
lines. Twenty four of these lines are on PI and the balance are on P2.
An address of 16, 24, or 32 bits can be selected by manipulating the
AMOI-AMOS signals.

VME-3

Peripheral Concepts

VMEbus Signals

Connector PI

------)

Row A

Row B

Row C

Row A

Row B

Row C

DOO
DOl
D02
D03
D04
DOS
D06
D07
GND
SYSCLK
GND
DS1DSOWRlTEGND
DTACKGND
ASGND
IACKlACKlNlACK OUTAM4
A07
A06
A05
A04
A03
A02
A01
-12V
+5V

BBSYBCLRACFAlLBGOlNBGOOUTBGIlNBG10UTBG2lNBG20UTBG3INBG30UTBROBRlBR2BR3AMO
AMI
AM2
AM3
GND
SERCLK
SERDAT
GND
IRQ7IRQ6lRQ5IRQ4IRQ3IRQ2IRQl+5VSTDBY
+5V

D08
D09
DIO
D1I
D12
D13
D14
D15
GND
SYSFAILBERRSYSRESETLWORDAM5A23
A22
A21
A20
A19
A18
AI7
Al6
Al5
AI4
A13
AI2
All
A10
A09
A08
+12V .
+5V

1
2
3
4
S
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
2'4
25
26
27
28
29
30
31
32

DBOO
DB02
DB04
DB06
DB08
DBIO
DBI2
DB14
DB16
DBI8
DB20
DB22
DB24
DB26
DB28
DB30
READ
lRQ-

+5V
GND
RES
A24
A2S
A26
A27
A28
A29
A30
A31
GND
+5V
D16
DI7
DI8
D19
D20
D2l
D22
D23
GND
D24
D25
D26
D27
D28
D29
D30
D31
GND
+5V

DBO!
DB03
DB05
DB07
DB09
DB1!
DB!3
DB15
DBI7
DBI9
DB2!
DB23
DB25
DB27
DB29
DB3l
RES
RES
RES
A01/ Al3
A03/AI5
A05/ A17
A07/A19
A09/A21
All/A23
LASUASUDSLDSDERRACKSMACKOUT-

<------

(

<------

L~ORD/AI2

A02/A14
A04/A16
A06/AI8
A08/A20
AIO/A22
RES
RES
RES
RES
RES
RES
SMACKINSMRQ-

Figure 4.1
VMEbus Signals

VME-4
Peripheral Concepts

Connector P2

------>

The address and data lines are physically separate signals and are not

~ultiplexed"

on the VMEbus. In a multiplexed system, both data and

address are transmitted over the same physical lines during different
time intervals. The advantage of a multiplexed system is that it can be
implemented using fewer connector pins, but the transfer rate (speed) for
multiplexed systems can degrade under certain conditions.

VME is an asynchronous bus which simply means that data, address, and
control lines are considered valid on their own edges, and are not
qualified with a system clock. Asynchronous protocol enables the VME to
be throttled at high speeds without setting any top limit for bus
frequency. Thus, the speed at which information can flow over the VMEbus
depends upon the speed of the individual boards taking part in the data
transfer.

(
This does not mean that an asynchronous bus has no limitations on speed.
There are two limiting factors. The first is a finite set-up,
propagation, and access time associated with individual components. This
limitation can improve with the selection of faster components. The
second factor involves delays associated with the b.ckplane signal paths
and capacitances. This is difficult to improve upon, and sets a
theoretical speed limit of 57.1
practical limit using today's

~egabytes/second

~hip

for the VMEbus. The

technology, is about 30 Megabytes/sec.

Asynchronous systems in general, are more susceptible to noise spikes on
control lines.

VME-5

Peripheral Concepts

Arbitration: In a multi-processing environment, there is more than

"Master" that can gain control of the bus. The protocol that
-

Olle

deter~iD

how the control of the bus will be granted to a requesting device is
called arbitration. The VME has a "centralized" arbitration scheme.

U~:.

this scheme, there is only one global "Arbiter" per system. This Arbit •.
determines which of the requesting boards ("Requester") will become

th!

next Master. The Arbiter is located in slot one of the VMEbus and is
often combined with the CPU board.
There can be up to 20 boards capable of becoming Masters. Each one of
these boards must have the intelligence circuits to request bus contro!.
Thus, each master has a Requester on-board. The VMEbus defines two type!
of Requesters -

Release When Done (RWD) and Release On Request (ROR).

The RWD Requester will keep control of the bus until a Master completes

an operation. The ROR type Requester will relinquish bus control when
another Master requests it. The user can implement the Requester scheme
that will best suit the functional importance of a given board.
There are also three types of Arbiters - Priority, Round Robin, and
Single Level. A priority Arbiter'monitors the four Bus Request lines
(BRO-BR3) and grants the bus to the Requester with the highest priority.
A Requester with BRO has the#lowest priority. The Arbiter grants the bus
by activating one of the Bus Grant In (BGOIN-BG3IN) lines. The Requester
accepts bus control by activating a corresponding Bus Grant Out
(BGOOUT-BG30UT) line. If two boards are wired for the same priority, then
the board closest to slot 1 in the daisy chain will gain bus control.

VME-6

Peripheral Concepts

, Round Robin Arbiter assigns bus mastership based upon a rotating

{

priority. Thus if the current Master is BR"N", then the next master will
be BR"N-l", and the next will be BR"N-2" and so on. In this scheme~ each
.aster has an equal opportunity to gain access to the bus, making it
useful for time-sharing applications.
A Single Level Arbiter monitors only the BR3 request line. When the
Arbiter detects an active BR3, it grants the bus by activating BG3IN.
Since the BGxIN' lines are daisy chained, BG3 propagates through the chain
and allows individual boards to respond with a BG30UT. Thus, the board
physically closest to slot 1 always has a higher priority, whereas the
board in slot 20 has the lowest.
The drawbacks of a centralized arbitration structure such as the one

c1escribed above, is that it limits the number of discrete arbitration
levels. Often times, the ability of a board at the bottom of the daisy
chain to gain bus control is restricted. Centralized arbitration also
requires dedicated Arbiter hardware in slot one. But once in place, it
need not be duplicated on each board.
Interrupt Handling: When

a system

component performing a task needs that

task to be serviced, it "interrupts" the system. The system then must

•

recognize an interrupt and respond to it. An interrupt can be handled in
two different ways: by proviaing dedicated hardware that will process all
interrupt requests, or by passing a messege block between bus Masters and
letting them respond to the request. The VMEbus uses the dedicated
interrupt hardware method.

(
VME-7

( ) Peripheral Concepts

Interrupt handling works similar to arbitration. The Interrupt handler
monitors seven Interrupt Request lines (IRQI-IRQ7). Each board designe:
to interrupt ("Interrupter"), has its own IRQx line. The board with

I~'

has the highest priority. If the bus can be released, the Handler
activates Interrupt Acknowledge (lACK), followed by other handshaking

complete a message transfer. The Interrupt Handler can be configured
either as a Single or Distributed handler. The Distributed Handler
supports anywhere from two to seven Handlers. Each Handler in turn, can
take care of one or more IRQ lines.
Utilities: The utility portion of the system bus contains power (+5V /3A,
+12V / lA, and -12V / lA) along ground lines, System Clock, System Reset, at:

AC Fail lines. These signals provide power, timing, and diagnostics
functions for the system.
(.

Mechanical: The VME system employs a "pin and socket" method for
connection to the backplane. It is the Eurocard form factor. A "single"
board is 100mm x 160mm and a "dual" board is 233.3mm x 160mm in size. A
variety of compatible board lengths and depths.have been developed for
different applications.

(

VME-8
Peripheral Concepts

--VMEbus System Components
. ,i

PROM

CPU 2

RAM

DEVICE
COftTROl

(
Figure 4.2
Secondary Busses: In addition to the system ~us, two additional busses,
the VMX and the VMS have been defined. A typical system configuration is
shown in Figure 4.2.
The VME Memory Expansion (VMX) bus is a high speed parallel bus that

•

provides a private data path between the processor and memory. Use of the
VMX for CPU to memory data transfers can help off-load the system bus.
Only one primary Master (usually a CPU) and one secondary Master (usually
a DMA board) are allowed on the VMX. Up to six functional modules can be

{

VME-9

Peripheral Concepts

connected in each VMI group. A typical example of a VMI group is a CPt ,
RAM board, a mass storage controller with DMA, and a CRT controller.
Functionally, VMI is very similar to the VMEbus. It allows up to 32 bi:
data transfers, but there are only twelve address lines. These can be
mul tiplexed for a total of 24 address bi ts, accessing up to 16 Megabyte!
of memory. VMI has no interrupt handling capability, but this will
probably be added in the future.
The VMS is a serial bus. It provides an alternate communication path
between system modules. It is not intended to replace local area
networking, which allows transmission over much longer distances. VMS
uses only two lines, clock and data. It can support speeds up to
3 Megabits/second running along a cable or a backplane.

The VMS is a "self arbitrating" bus. When a device wishes to transmit

(

over the VMS, it sends the bits and also monitors the data. If other
devices are also transmitting at that

time~

the data will collide. Thus,

the data transmitted will be different than the data monitored. When this
happens, the transmitting device ,will back off and try again until no
collisio~s

are detected.

As a local communications or "party line" bus, the VMS makes more
bandwidth available for the system bus. It can also be used to implement
diagnostics and fault tolerance. If a module malfunction is detected,
that module can be disconnected via the VMS bus without crippling the
entire operation of the system bus.

(

VME-I0

Peripheral Concepts

-Product Definition
Products and forecasts within this category refer to controller
board-level products that use the VMEbus as the host interface andvarious peripheral interfaces for mass storage control. Examples of
products.and manufacturers in this category include:

(

Basu Inc.

FDC01, FDC02

Data-Sud Systems

FDCONT-l, HDCONT-l

Dual Systems

V9TRK, Optimatrack

DY-4 Systems

DVME 712/715, SVME 716

Elect Modular Systems

MTC-l, HD-l

Force Computer

SYS68K/WFC-l

General Micro Systems

GMS V09

Hamilton Std Digital Systems

MI 75803, 75805

Integrated Solutions

VME-QIC2/8

Interphase

V/SMD 3200, V/TAPE 3209

Ironics

IV-3275

Microproject

7509-7, 7550-2

Mini Computer Technology

MCT 6020, 6090, 6600, 6700

Mizar

VME 7400, 8400

Motorola

MVME 3XX Series, MVME 435A

Plessey

PME WFC-l

Microsyste~s

Sigen

DC-5, DC-7

Signetics

SMVME 4300A

Xylogics

715, 772

(

VME-il

Peripheral Concepts

Market Trends
Peripheral Concepts estimates. the total VMEbus controller market to be:

REVENUES ($)

1984

1985

1986

1987

5,538[

8,449[

13,981IC

27,694[

52,0381

5.04[

7.45[

12.02IC

23.62[

45.861

1988

SHIPMENTS

I
I

The VMEbus mass st·orage controller market was virtually non-existent in

1983. In 1984, over 5,000 controller boards were shipped. The market vi::

III !

cont~nue

to grow this year, and experience an even stronger growth in

1986. During 1985 to 1986, revenue growth will be an impressive 65.5%,
followed by an even steeper 98.1% gain in 1986-1987. The market will grOt
at a slightly slower rate of 87.9% in the 1987-1988 period. But from 198.
to 1988, there will be close to a ten fold increase in the size of the

(

market, from $5.5 Million in 1984 to over $52 Million in 1988. This
represents a compound annual growth rate

75.1%, making VME controllers

one of the fastest growing segments in the controller business.
Unit shipments will also exhibit strong growth. This year, nearly 7.5K
units will be shipped, an increase of 47.8% over last year. In 1987, we
expect the year-to-year

grow~

rate to peak at 96.5%, with shipments

totalling 23.6[ units. Nearly 46[ units will be shipped in 1988. CAGR
during the 1984-88 period is estimated at 73.7%. This rate is about equal
to the revenue growth for the same period. Generally speaking, shipments
grow at a faster rate than the revenues, indicating a decline in prices
as volumes go up. In the case of VME though, a change in product mix will

o
.... -

VME-12

Peripheral Concepts

- - - - - - - - _ .._.- _....._----_._--_

.. -......

-'-'-

(

~eep

the shipments in line with revenue growth. A multifunction

controller will replace two individual controllers, resulting in a slower
net shipment growth.
Although the forecast for the next two years remains very upbeat for VME
controllers, the real growth will actually occur in the following years.
New design activities are in a high gear now, and this will result in the
availability of new systems in 1986-1987 period. Engineering workstations
using the VMEbus will also debut by that time, creating strong demand for
mass storage controllers.
There will be little or no erosion in Average Selling Prices (ASP) during
1985 and 1986. VMEbus controllers are still not in volume production. In
addition, controller suppliers will try to hold margins steady through

(

~ext

year. After that, competitive pressures will force the prices

downwards. We expect ASPs for winchester controllers to drop by 20.6%
during the 1986-88 period. For the same period, multifunction controller
prices will drop by a more modest 12.3%.
A changing product mix will keep the average ASP. stable through 1988. Two
I

high priced controller categories, winchester only and multifunction,
will both increase their

shar~

of the market during the 1984-88 period,

keeping average prices higher. In general, VME controllers will remain

more performance-oriented than price-sensitive. Although the price/
performance ratio will continuously improve during the next few years, a
severe decline in average selling prices is unlikely.

VME-13

Peripheral Concepts

Winchester-only controllers generated 23.9% of revenues in calender

H~.

mostly from the lower-end ST506 type controllers. With the introductio t
.-

of controllers for new generations of disk drives (expected early next
yea~),

I.
I; ,

the growth for the winchester-only category will reach 95.3% in

1985-1986, and 110.6% in the following year.

I I
I

Tape controllers made up a relatively small (7.5%) of the total
controllers shipped in 1984. The growth for 1985 will continue at a
modest 35.6%. But the availability of more and more tape products will
cause the tape-only category to grow at an estimated 86.2% rate in 1986,
and at even higher rates in the subsequent years. Cartridge

tap~

controllers accounted for 55% of the 1984 shipments of tape-only
products. The future growth of cartridge tape controllers will however,
be limited, as high-end VME systems begin using more 9 track drives.
F

Floppy-only controllers took the lion's share of the 1984 VMEbus market.
They accounted for approximately 60% of all units shipped, generating
43.5% of the total revenues for this segment. It is not unusual for this
emerging market, because most initial systems are equipped with only a
floppy disk drive. Stand-alone floppy controllers will continue to grow
at a healthy rate over the forecast period. Unit shipments will grow
86.5% from 1985 through

1987~

Revenues will grow 67.1% during the same

period, reflecting a growing decline of prices. As the floppy control
function is integrated on multifunction boards, the growth of floppy-only
controllers will slow down considerably beyond 1987. Revenues for
floppy-only controllers will actually,peak in 1988 and then decline
rapidly.

o
r-

VME-14

Peripheral Concepts

Multifunction controllers accounted for 25% of all controllers shipped in

1984. All existing multifunction controllers support the 5-1/4 inch ST506
class of winchester and the SA460 type floppy disk drive. Availability of
a wider variety of multifunctions (in particular, disk/tape controllers),
viII spur additional market growth beyond 1986. We expect multifunction
controller revenues to grow at 146.1% rate in 1986-1987. In 1988,
multifunction revenues will surpass those of winchester-only controllers.
Nearly 40% of the total revenues will come from multifunction products.
Most VME controllers are currently being manufactured by system
suppliers. Some of these controllers were primarily evaluation tools and
vere not particularly optimized for performance. Some suppliers offered
an SCSI (Small Computer System Interface) port, allowing the user to put
together a system using readily available SCSI controllers. Many
( companies gained a quick entry by acquiring controller products through
licensing. For example, Plessey Microsystems marketed Force Computers'
products under private label. Interphase

Corp~ration

and Hamilton

Standard Digital Systems (formerly Mostek) co-developed an SMD disk
controller that is also being marketed
, by Motorola. Controllers sold by
companies such as Force, Data-Sud, Electronic Modular Systems and others
are designed and/or produced i9 Europe.
The new entrants into the VME controller market will continue to be
current suppliers of Multibus controllers. Xylogics, Interphase,
Minicomputer Technology, and Central Data have announced VME products.
For these companies, it is a logical extension of their traditional
business. With their expertise in high performance controllers and
VME-15

Peripheral Concepts

established distribution channels, they will change the character of t:!
VMEbus controller market over the next few years.
Like the Multibus, VME is also a system integrator's bus and will reDIa::
so in the future. Over 76% of VME controllers last year were sold to
system integrators. These companies in turn, put together value-added
systems and sold to end users. The remaining 24% of controllers were so::
through distributors and sales representatives. These shares will not
change significantly in 1985, but during the 1986 and

1~87

period,

controller sales to OEM system integrators will increase to 79% and SQ,
respec ti vely.

•

VME-16
( ) Peripheral Concepts

T,tchnology Trends
So far, no firm architecture has emerged for VMEbus controller designs.
Indeed, most initial "controllers" were actually adapters for the popular
SCSI bus. This provided a fast and convenient way to attach peripheral
devices to

VMEbu~

systems. The use of SCSI as a mass storage bus may be

more than just an interim solution. Low and medium performance VME
systems can greatly benefit by using SCSI. For example, a system with
heavy bus traffic can perform disk/tape transfers over SCSI, thereby
off-loading the system bus. Use of an I/O bus such as SCSI also saves
"slots" that may be valuable for heavily loaded system configurations.
However, for very high performance applications, the use of an
intermediate bus such as SCSI reduces efficiencies. Controllers which
c"nterface peripherals directly to the VMEbus will continue to offer the
highest performance. The majority of controllers under development today
fit into this category. New controllers will use an architecture similar
to that used currently on Multibus-based controllers, consisting of
microproce.sors or bit-slices to create the basic "engine". This engine
then has the capability to be used in a variety of different control
functions.
The majority of winchester controllers in 1984 and 1985 were for smaller
5-1/4 inch disk drives with ST506 interface. Several controllers for
Storage Module Drives (SMD) are being introduced later this year. These
controllers will support data rates of 2.5 Megabytes/second and higher.
In 1986, SMD disk controllers will dominate the winchester-only category.

VME-17

Peripheral Concepts

Small disk drives with the ESDI interface are just emerging and will be
available in volume by mid 1986. This will spur the demand for ESDI
controllers. Nearly a quarter of the Winchester controllers shipped for
the VMEbus in 1987 will use the ESDI interface.
Since VME supermicros will be used in applications requiring high
perf"ormance, VME disk controllers must incorporate features that improve
access time and reliability. Techniques such as on-board cache, DMA
capability, and defect management will become typical features for VME
disk controllers •

.
Tape controllers with the "Pertec" type interface (9 track tape drives)
will gain considerable market share in 1986-1987, serving as companion
products for SMD disk controllers. If standardization efforts on 1/2

1n~

tape cartridges (such as IBM's 3480) materialize, controllers for those
(

drives will result in a strong market for VME.
The availability of higher density gate arrays and VLSI chips now allow
implementation of multiple functions on a single board. Multifunction
controllers supporting the winchester/floppy combination are available
l

today, and winchester/tape combinations will appear by mid 1986. Most
disk/tape controllers will continue to support small winchesters (ST506

•

or ESDI) and 1/4" cartridge tape drives. The SMD disk/9 track tape
combination will not be very popular because of the need to maximize
performance at the high end.
Unix and its derivatives have an early lead as the operating system of
choice for VME. Unix System V is particularly popular. Some vendors also

o
t

'_' _ _

'_~'

VME-18
Peripheral Concepts

____ ' _ _ _ " _ _ _ __

•

offer the CP/M-681 operating system. If Unix indeed becomes the dominant

o,.ra i ng system,
t

it will solve many compatibility issues that have

,lag ued other busses similar to VME.

Most VME systems today are based on the 68000 microprocessor family. This
viII continue to be the case. Ther. are some interesting exceptions,

though. Some VME systems have been built using other microprocessors
including DEC's J-ll chip set. This approach however, will be limited to
applications where dual compatibility is required.

(

VME-19

Peripheral Concepts

---I
I
Competing Technologies
The most direct competitor for the VMEbus is Multibus-II. Ever since the
VMEbus was first introduced, it has been a subject of comparison and
debate with the Multibus-II. While both busses are well suited to serve
the potentially large market for next generation super microcomputers,
VMEbus has taken an early lead over Multibus-II. In order for the VMEbus
to maintain that lead, a lot of things will have to fall in place over
the next couple of years.
To compete effectively, the VMEbus must continue to win key design-ins i:
the 32 bit microcomputer market. It is important to note that it wasn't
necessarily the technical superiority that generated early momentum for
VME, Rather it was the lack of support for Multibus-II. There is a large
installed base of Multibus-I users, and they will require solid technica:

(

reasons to switch to a new architecture. Semiconductor support and
applications software are two areas where VME faces a "catch-22"
situation. Up front investments must be made to develop LSI devices as
well as applications software, but the volume has not been established to
\

justify the expense. Without these, the market will not grow. But
overall, the VMEbus is well positioned to win the Multibus-II battle.
A significant portion of the supermicro and low-end minicomputer market
is controlled by Digital Equipment's Q-bus. The Q-bus is currently
positioned in a higher p~iced market than VME and poses no immediate
threat. However, new Q-bus systems such as the MicroVAX are aggressively
priced and have the potential to compete directly with VME predicated

o
-•

-,,-----.'-

-- -

VME-20

Peripheral Concepts

-. . . )*

upon further price cuts. Initially, DEC will target the MicroVAX
•• rketing effort towards existing Q-bus users, who have an investment in

DEC software and add-ons. During this window, the VME must consolidate
itS position so that it can co-exist with Q-bus systems. Any competitive

product .from IBM in the workstation market will threaten all contenders,
and VME is no exception.
Other 32 bit busses such as the Futurebus and Texas Instrument's NuBus
have failed to gain widespread support. The use of these busses will be
limited

special applications, such as those in defense and artificial

intelligence. We don't expect these busses to compete in the general
purpose super microcomputer market in the future.

(

VME-21

Peripheral Concepts

Key Assumptions
,

A growing availability of VME systems will fuel the growth of
controllers over the next three years.

Competition from Multibus-II and MicroVAX products will impact
rate of growth in 1987-1988.

The proliferation of multifunction controllers will slow down 0',..
shipment growth in 1986-1987 and cause slower price erosion of a;~~
selling prices.
"

CALENDER 1984 MAR~ET SHARES
REVENUES BY MANUFACTURER
MARKET SHARE (%)

MANUFACTURER

(

Motorola
Force Computer
Hamilton Std Dig Sys
Data-Sud
Signetics
OTHER

VME-22

Peripheral Concepts

4.1

22.7
100.0 %

TOTAL

31.6
20.7
12.0
8.9

::uJ,.

&t'

~rket

'f''''_

Share Analysis

Like any other emerging business, the VMEbus controller market was
severely fragmented in 1984. Although Motorola and Force Computer
commanded over half the 1984 revenues, controllers still represented a
small portion of each company's business. No one supplier made a push to
become the leader in VME controller products during 1984. The infant
state of the market is also evident from the fact that 22.7% of revenues
vere generated by a number of small companies whose individual
contribut~on

was less than four percent each.

Market shares for 1984 must be viewed with the above facts in mind. When
a market is new, constantly changing and fragmented, the numbers could be
misleading. As the VMEbus controller market matures over the next couple
( )f years, market shares will become more stable.
For 1985, the picture will hardly change. New players in the VMEbus
controller market have not yet made an impact. Towards the early part of
next

year~

companies like Xylogics and Interphase will begin volume

shipments, considerably changing the structure of' the market. Independent
controller houses will begin to establish market leadership positions,
replacing system manufacturers

~urrently

in that role. Over the next

year, key OEM contracts for yME system components will be awarded. At
that time, the long term market leaders will emerge.

VME-23

...
"""-..,....~~-~........- ...-

---~~.....-,~..--.

Peripheral Concepts

,....... - ....... - -.....,-....-~--'1 ...--..-,..-....- -..- ..- - - - - . - -.. - . . . . ~...,.---.:---,.,.....

.,.
I

E WINCHESTER D FLOPPV •

I !
. !

DID I'IULTIFUHCTIOH

.......................................................................

39 ..•...........••.........................•.............................
"

($)

TAPE

29 ............•.........................................

18 .................... .ft'I!'I'I'I''I'ft'l,.,....

VHEbus OONTROIJ.ERS

REVENUE StHtARY

C·

REVENUES BY PRODUCT TYPE ($000)

AcruAL

1984

FORECAST

1985

1987

1986

1984.J1,.S

1988

COh'TROLLER TYPE

CAGR:
, (I)

REVe$')

el)

REV(S!)

(%)

REV($I)

(%)

2,579

30.5

5,036

36.0

10.607

38.3

18.976

36.5

94.6:

43.5

3,356

39.7

4.408

31.5

5,611

20.3

5.960

11.5

25.4%

418

7.5

-567

6.7

1.056

7.6

2,909

10.5

6.370

12.2

97.6%

1,385

25.0

1.947

23.0

3,481

24.9

8,567

30.9

20.732

39.8

96.n

$5,538

100%

$8,449

100% $52,038

100%

75.1%

REV($!)

(%)

REV($')

Winchester

1,324

23.9

Floppy

2,411

Tape
Multifunction

TOTAL REVENUES ($000)

ANNUAL GROW"l'H RATE

•

100% $13,981

52.6%

100% $27,694

65.5%

98.1%

SOURCE:

Peripheral Concepts

VME-24

87.9%

PERIPHERAL CONCEPl'S, INC.

....

d.1

c·'

e e·,"W c·

e' £

mimi WINCHESTER 0 FLOPPV •
~"

(I)

r" a . •

·.toMtriir

d'.

TAPE IIDU1ULTIFUNCTIOH

..•....•••.•..••..•........••..........•..•••••.•.•.•..•..•....•.•••.••......•........••

49
39
29

.......................................................
..

18 .....................................•mimim..

VMEbus (X)NTROJJ..ERS

SHIPHENT StNWlY

\<
AC'l'UAL

1984

SHIPMENTS BY PRODUCT TYPE (000)

FORECAST

1987

1986

1985

1984-88

1988

~OLLER TYPE

CAGR:
UNITS«()

ii1ncheater
~

noppy

':I~

~:t1f\lnc:t1on

~A!. SIliPKENTs (000)

•

U\-. \:.. CRCIIln{ RATE

(I) UNITS(t)

(I) UNITS(l)

el) UNITS (It)

(%) UNITS(IC)

(I)

10.9

1.1

13.9

2.3

17.7

5.4

21.1

11.1

22.5

107.4%

3.0

54.S

4.3

54.4

6.0

46.2

8.0

31.2

9.3

18.9

32.7%

9.1

7.6

1.2

9.2

3.6

14.1

8.2

16.6

101.2%

1.4

25.5

1.9

24.1

3.5

26.9

8.6

33.6

20.7

42.0

96.1%

5.5

100%

7.9

100%

13.0

100%

25.6

100%

49.3

100%

73.0%

43.61

64.6%

96.9%

SOURCE:

VME-25

92.6%

PERIPHERAL CONCEP1'S. INC.

(9 Peripheral Concepts

VMBbus OONTROLLERS

REVENUF.9 BIEAIlXMf BY DRIVE IMTERFACE

<------:REVENUES BY PRODUCT TYPE

( $ 0 0 0 ) - - - - - -_ _ _ _ _ _
- .

( - - - - - - FORECAST----_ _ _ _ _ __

AC'lUAL

1985

1984

1987

1986

1988

INTERFACE TYPE

Winchester Only:
STS06

ESDI
SHD

Other

TOTAL REVENUF.,C; ($000)

REV($[)

(I)

REV($[)

(I)

REV($[)

(I)

REV($[)

(I)

REV($I)

(%)

1,282

96.8

2,396

92.9

3,535

70.2

5,091

48.0

7,609

40.1

0.0

317

6.3

1,676

15.8

4,270

22.5

3.2

183

7.1

1,183

23.5

3,702

34.9

6,338

33.4

0.0

138

1.3

759

4.0

$1,324

1001

$2,579

1001

$5,035

1001 $18,976

100%

94.8%

ANNUAL GROW'nI RATE

(

REVe$[)

Tape Only

(I)

m($[)

(%)

100% $10,607

95.21

me$[)

el)

110.7%

REV($[)

56.l

230.2

94.,:

78.9%

(%)

REV($')

eX)

QIC

230

55.0

264

46.6

339

32.1

736

25.3

1,522

23.9

60.4%

Pertec

180

43.1

285

50.3

660

62.5

1,969

67.7

4,032

63.3

117.6%

1.9

3.2

5.4

204

7.0

815

12.8

Zl7.n

$418

1001

$567

1001

$1,056

1001

$2;909

1001

$6,369

100%

97.6%

Other

TOTAL REVENUF.9 ($000)

35.6%

ANNUAL GROWTH RATE

86.21

175.51

118.91

•
SOURCE: PERIPHERAL CONCEPTS, IHC.

VME-26

Peripheral Concepts

- ---------........--__.--...__..J:
", __ -we

•

PRODUCT MATRII
This section details manufacturer's products which are in production
or will enter production before the first quarter of 1986. The
products are segmented into DEC, Minicomputer, Multibus 1/11 and
VMEbus sections. Within each section, products are alphabetized by
manufacturer.
Although most current controller products are listed, those being
phased out of production have been omitted: Likewise, products for
which the manufacturer could not supply pricing have not been included
since these products may be too new for availability data or are sold
only on a custom basis.
•
The product data presented here has been compiled from manufacturer's
specifications and/or phone inquiry to personnel at each company. We
have checked all data for accuracy. Inevitably, ommissions and/or
errors ~ccur. If such is the case, please contact us, so we can
correct them prior to the next edition.
Within each category, products are classified as Winchester-only,
Tape-only, Floppy-only or Multifunction. Use the following guidelines
while interpreting individual categories.

(

Drive Characteristics
Type of interface used, maximum number of drives supported, sector
sizes and error detection/correction techniques are listed. For tape
drives, "Pertec" interface implies industry standard 9 track reel type
drives, with or without formatter. If the controller supports
formatted drives, error detection and correction carry "In The
Formatter" comment.
Host Characteristics
Identifies the host computer bus, size of buffer and interleave factor
for disk sectors.
for DEC controllers, type of DEC bus (Q Bus/Unibus), supported and
.odel numbers of DEC products emulated are listed. For Minicomputer,
na~e of the computer company and the computer bus supported by the
Controller are listed.
For Hul ti bus .and VMEbus, level of bus support t such a s wid th of data
and address paths supported by the controller is listed.

PRODUCTS-l

Peripheral Concepts

Physical Characteristics
Physical size of the board and power requirements are listed in this
section. The following form factors apply :
DEC:
Dual Width Board
Quad Width Board
Hex Width Board

5.22" W x 8.9" L x 0.5" H (2 Connectors)
10.44" W x 8.9" L x 0.5" H (4 Connectors)
15.70" W x 8.9" L x 0.5" H (6 Connectors)

Minicomputer:
Data General
15.0" W x 15.0" L x 0.5" H
Perkin-Elmer
15.0" W x 15.0" L x 0.5" H
Texas Instruments - 14.2" W x 10.8" L x 0.5" H

(

Multibus-I:

6.75" W x 12.0" L x 0.5" H

Multibus-II: Single Dual

3.94" W x 8.66" L x 0.5" H (Eurocard)
9.18" W x 8.66" L x 0.5" H (Eurocard)

VMEbus:

3.94" W x 6.30" L x 0.5" H (Eurocard)
9.18" W x 6.30" L x 0.5" H (Eurocard)

Single Dual

Availability/Price: Current availability as of August 1985 and single
piece or list prices are provided.
Comments: Some comments have been added for those controllers with
characteristics that does not fit into the above categories. If a tape
controller is simply a coupler, that fact is noted in the comments
field.

PRODUCTS-2

Peripheral Concepts

DEC

ADVANCED ELEC DESIGN

ADVANCED ElEe DESIGN

ADVANCED ElEC DESIGN

ANDRO"EDA SYSTE"S

~IUIBER

FLEX-02

IUNC 05/05

WINC 05/08

SDCll

~TYPE

Floppy Only
'8 Inch)

tlultifunction
(Wi nchesterlFI oppy)

"ultifunction
'Winchester/Floppy)

Winchester Only
(5-1/4 Inch)

SA800

5T506, SA460

5T506, 5ASOO

5TS06

riM. Dri,,,

2 Floppies

2 Winchesters,
2 Floppies

4 Winchesters

ftor Ii," -BYt~

2S6 Through lK

128 Through lK

Progra •• able

rr Detection

MIA

N/A

Errrr Correcti on

NIA

N/A

NIA

N/A

Skipping

NIA

N/A

DEC Bus Type

II Bus

DEC Elulation

RXOI/02

RLOI/02, RX02, RX50

RLOI/02, RX02, RXSO

RL02

Size of Buffer

NIA

N/A

NIA

ftinilul Interleave

NIA

2:1 (liinchester)

2:1 'Winchester)

NIA

~C\J£R
!

- ilt"I".
rot

DlIYE
_TERISTICS .

flal

HOST
(

~ARACTERISTICS

PHYSICAL
CHARACTERISTICS
Fori Factor

One Dual Width Board

One Dual ~idth Board

One Dual Width Board

Paller Suppl y

+SV DC @3.SA "ax
+12V DC @O.IA "ax

+5V DC @4.SA "ax
+12V DC @O.lA "ax

+5V DC @4.SA "ax
+12V DC @O.IA "ax

+5V DC @2.5A Typ

Availability

Ho.

No.

Ho.

No.

tl,S7S/1's

tl,575/1 '5

$1,395/1'5

DE" Price (U.5.)/IITY $97S/1's
CO""ENJ5

810d "ode OM

PRODUCTS-3

( ) Peripheral Concepts

! :

DEC

IIANUFACTURER

CONTROLLER TYPE

WDCl1-B

WDClt-C

WDCll-D

RDCll

lIultifuncti on
(Winchester/Floppy)

lIultifunction
(Winchester/Floppy)

!luI ti function
(Winchester/Floppy)

Winchester Only
i
(5-114" FixedJReaoYiblt';

DRIVE
CHARACTERISTICS

Dri ve i nhrface

SAI000/ST506 (Winch),
SABOO/450 (Floppy)

ST506

I
I
I

,
I

4 Ninch, 2 Floppies
(llust Be Si.ilir Type)

4 Ninch, 2 Floppies
(!lust Be Sililar Type)

4 Winchesters

Sector Sizes -Bytes 128 Through lK

128 Through lK

Error Detection

N/A

NIA

"/A

Error Correction

MIA

M/A

MIA

I,
I

Flaw Skipping

MIA

M/A

MIA

DEC Bus Type

9 Bus

DEC E.ulati on

RK05 (Winchester),
RX02 (Floppy)

RLOI/02 (Winchester),
RX02 (Floppy)

RP02 (Winchester),
RX02 (Floppy)

ItSCP, RD Type Winchester,

Size of Buffer

N/A

MIA

lIini.uI Interieave . 3:1

3:1

2:1

lIaxilu, I Drives

!
i

4 Winch, 2 Floppies
(llust Be Si.ilir Type)

HOST
CHARACTERISTICS

(

PHYSICAL
CHARACTERISTICS
Fori Fador

One DUil Width Board

One Dual Width Board

Paller Supply

+SV DC @2.7A Typ
+12V DC @O.IA "IX

+5V DC @2.7A Typ
+12V DC @O.IA lIax

+SV DC @2.7A Typ
+12V DC @O.IA lIax

+SV DC @2.SA Typ

Availability

Now

NOli

19 1985

DEli Price (U.S.ltQTY '1,595/1'5

$1,595/1' s

$1,595/1's

$1,695/1'5

COIIIIENTS

Peripheral Concepts

F'RODUCTS-4

DEC

AHDRO~DA

l.cnJER

SYSTEIIS

AVIV

~UBER

UDCll

TFC 925

TFC 825

DFC 907A

~TYPE

flul ti fund i on
(Ninchester/Floppy)

Tape Only
(9 Track)

Ninchester Only
(8 or 14 Inch)

5TS06, 5A800/460

Pertee

Per tee

SliD

4 Ninch/Floppies In
Any Co.bination

4 Tape Drives

4 Tape Dri ves

4 Winchesters

128 Through lK

Up To 64K

Progra•• able

DRIYE

~T£RISTICS

('" ',t."Io"
Au I lUI •

Drives

Sizes

~tar

-Byt~s

'![rrar

Detection

MIA

MIA (In The For.atter)

32 Bit ECC

[rror

Carrecti on

H/A

MIA (In the For.atter)

11 Bit Burst

MIA

MIA (Block Re-.rites)

NIA

DEC Bus Type

QBus

Unibus

QBus

DEC ElUlati on

IISCP, RXSO Floppy and
RD Type Winchester

TS-11

RH11/70 With R"02/05

Size of Buffer

HIA

MIA

16K

ftini.u. Interleave

2:1

NIA

MIA

NIA

For. Factor

One Dual Width Board

Single Hex Width Board

Single Hex lIidth Board

Single Quad Width Board

Paller Supply

+5V DC @2.SA Typ

+SV DC @S.OA "ax

+5V DC @6.SA "ax
-12V DC @0.7A "ax

Availability

lQ 1985

2Q 1985

No.

DE" Price (U.S.I/QTY SI,79S/1's

S2,800/1's

S2,8S0/1's

CD""ENTS

Tri Density Tape Coupler Tri Density Tape Coupler
Up To 200 ips Speeds,
Up To 200 ips Speeds
Supports lIicroVax

Ft.. Skipping

(

HOST
IARACTERISTICS

PHYSICAL
CHARACTER ISTICS

8lock flode DIIA

PRODUCTS-5

Peripheral Concepts

DEC

AVIV

"ANUFACTURER

AVIV

AYIY

ItODEL NU"BER

DFC 907B

DFC S07A

DFC S071

DFC B07C

CoMTRoLLER TYPE

Winchester Only
(S Dr 14 Inch)

Winchester Only
(S or 14 Inch)

Wi nchester Dnl y
(S or 14 Inch)

Drive interface

S"D

S"D (l.S "Bytes/sec)

S"D 11.8

"axilUl I Drives

4 Winchesters

4 Ihnchesters

Sector Sizes -Bytes PrDgrallable

Prognllable

Prognlaable

Prograuable

Error Detection

32 Bit ECC

Error Correction

11 Bit Burst

Flail Ski ppi ng

NIA

M/A

NIA

I
I

DRIYE
CHARACTERISTICS

"'ByteS/SKI

I
I

HOST
CHARACTERISTICS

(

DEC Bus Type

9 Bus

Unibus

DEC Elulati on

RK711 With RK07 Drives

RHll With R"02/05

RK711 With RK07 Drives

R"03/05

Size of Buffer

"inilul Interleave

MIA

NIA

Single Hex Width Board

Single Hex Ifidth Board

PHYSICAL
CHARACTERISTICS
Fori Factor

*' Hex Width Board
Single Quad Width Board Single

POller Supply

+5Y DC @6.5A "ax
-12V DC @0.7A "ax

+5V DC @7.0A "ax
-5V DC @0.7A "ax

+5Y DC @7.0A "ax
-5V DC @0.7A "ax

+5Y DC @7.0A "ax
-5Y DC @0.7A "ax

Availabili ty

NOli

Mow

Now

$3,600/1'5

DE" Price (U.S.)/QTY $2,850/1'5

optilized FDr VAX 780

Co""ENTS

Peripheral Concepts

PRODUCTS-6

DEC

AVIV

DFC BOBA

DFC 808B

DFC b07A

DFC 607B

Winchester Only
(8 or 14 Inch)

Winchester Only
(B or 14 Inch)

Winchester Only
(8 or 14 Inch)

Winchester Only
(8 Dr 14 Inch)

S"D (l.B "Bytes/sec)

S"D (2.4 "Bytes/sec)

S"D (l.B "bytes/sec)

S"D (1.8 "Bytes/sec)

4 lIinchesters

4 Iiinchesters

4 Winchesters

Prograllable

Progriluble

Prograllable

32 Bit ECC

Error Correction

11 Bit Burst

11 Bi t Burst

11 Bit Burst

Flill Skipping

H/A

M/A

H/A

"/A

DEC 8us Type

Unibus

C"I Bus

DEC Elulation

R"02/0S

R"02l0S

RH750 With R"03/0S

RH750 With RPOb

Size of Buffer

"inilul Interleave

2:1

H/A

N/A

Fora Factor

Single Hex liidth Board

Single H\x Width Board

Extended Hex Board

POller Sup ply

+5V DC @7.0A "ax
-SV DC @0.7A "ax

+SV "DC @7. OA "ax
-5V DC @0.7A Max

+SV DC @9.0A Max
-SY DC @0.7A Max

+SV DC @9.0A Max
-SY DC @O.7A Max

Availabili ty

NOli

NDII

NOli

$4,400/1'5

$8,950/1'5

I""'"

-.IUIBER

-CJTW£R TYPE

DRIVE
btMACTERISTICS .

"i y, interfice
iJluilUl •

Drives

Sector Si Zl!S -Bytes Progrillable
Error Det ect ion

HOST
r~ARACTERISTICS

PHYSICAL
CHARACTERISTICS

DE" Price (U.S.)/QTY $4!400/1's
CO""ENTS

For Use lIith VAX-11/7S0 For Use With VAX-11/7S0
COlputers
COlputers

F'RODUCTS-7

Peripheral Concepts

DEC

II
I

AYIY

CO"PUTER STORA6E TECH

CO"PUTER STORAGE TECH

DISTRIBUTED LOGIC elf
(DILD6)

"ODEl NU"BER

TFC 80'

CC-300

TC-200

DII 619

CONTROllER TYPE

Tape Only
(9 Track)

Tap. Only
(1/4 Inch Cartridge)

Tape Only
(9 Track)

Floppy Only
(5-114' Inchl

i ,
,

"ANUFACTURER

DRIVE
CHARACTERISTICS

.i !
I ,

Drive interface

STC 19'3

IIIC-02

Pertec

SA450

"axilul • Drives

4 Tape Drives

1 Tape Drive

4 Tape Drives

2 Floppies

512 Bytes

I! i'
i

I'
I

Sector Sizes -Bytes Up To 64K

To 2K

256 Through lK

Error Detection

HIA (In The Forlatter)

MIA (In The Forlatter)

CRC, Parity

MIA

Error Correction

MIA (In the Forlatter)

HIA (In The Forlatter)

Single Track (PE Only)

HIA

Flal Skipping

HIA (Block Re-.rites)

NIA (Block Re-Irites)

MIA (Block Re-Irites)

MIA

HOST
CHARACTERISTICS

(

Unibus

II-Bus

Unibus

II Bus

DEC Elul ati on

T"-11

T"-l1

RX02

Size of Buffer

4K FIFO

512 Bytes

64 Bytes

One Sector

"inilul InterJeave

MIA

NIA

MIA

Fore Factor

Single Hex Width Board

One 'ual Iii dth Board

Single Hex Width Board

One Dual Width Board

Power Supply

+5Y DC • 5.0A "ax

.5Y DC • 5.0A "ax

+5Y DC @B.5A Typ

+5Y DC @2.3A Typ

Avail abi li ty

NOl

Mal

NOl

.1,BOO/l's

.3,000/1'5

.895/1'5

PHYSICAl
CHARACTERISTICS

DE" Price (U.S.)/IITY .9,10011'5

o
..

I
\

DEC Bus Type

CO""ENTS

Tri DenSity Tape Coupler Supports 30/90 ips Tape Supports NRZI/PE Tap.
Speeds
Up To 12' ips Speeds
Drives With 25-12' ips
Speeds

Peripheral Concepts

PRODUCTS-8

Supports Double Sidedl
Double Density Drives

\
I

DEC

DISTRIBUTED L06IC CORP
(DILDS)

DISTRIBUTED L06IC CORP
(DIL06)

DISTRIBUTED LD6IC CORP
(DILD6)

DISTRIBUTED L06IC CORP
(DIL06)

DO 419

DO 342

DO 132

DU 342

Floppy Onl y
(S Inch)

Tape Only
(1/4 Inch Cartridge)

Tipe Only
(9 Track)

Tipe Only
(1/4 Inch Cartridge)

SABOO/B50

CDC Sentinel

Pertec

CDC Sentinel

2 Floppies

2 Tipe Drives

4 Tape Drives

2 Tape Drives

MIA

Up to 2K

MIA

MIA (In The For.atter)

[rrar Correcti on

MIA

MIA (In The Forlatter)

MIA (In The For.atter)

Ft .. Ski pping

MIA

MIA (Slock Re-Mrites)

MIA (Block Re-Mrites)

In The For.atter

lEe Bus Type

QBus

Unibus

IEC Eaulati on

RX02

TS-I1/TUBO/TSV05

TS-IIITSV05

TS-llITUBO

Sizl! of Buffer

NIA

MIA

"inilUI Interleave

MIA

NIA

Farl Factor

One Dual Nidth Board

Single Quld Nidth Board Single Quad Nidth Board Single Quad Width Board

POller Supp Iy

+5V DC @2.SA "ax

+5V DC @3.SA Typ

+5V DC @4.0A "ax

+5V DC @3.5A Typ

Avail ab il it Y

NOM

NOli

Mall

NOli

OE" Price (U.S.)/aTY SS95/1's

Sl,350/1's

SI,350/1's

Sl,550/1's

CO""EMTS

500KB/sec Tape Speeds

Tri Density Tape Coupler 500KB/sec Tape Speeds
Up To 125 ips Speeds

r-:(TlJ£R

. I
r-1dIER

~. ~

~TYPE

,....

,IYE
1~ISTlC5

,..

Iltfrface

IIDI" , Drives

SK1ar Sizes -Bytes 256 Through lK

~ar

Detecti on

HOST
.

'~TERISTICS

PHYSICAL
CHARACTERISTICS

PRODUCTS-9

Peripheral Concepts

DEC

"ANUFACTURER

DISTRIBUTED LOiIC CORP
(DIlO6)

DISTRIBUTED LOiIC CORP
(DIl06)

DISTRIBUTED LOGIC CORP
(DIL06)

DISTRIBUTED L06IC ~
(DILOS)

"ODEL MU"BER

DU 132

DU 130

DCI 130

DCI 330

COMTROLLER TYPE

Tape Only
(9 Trick)

Tap. Only
(9 Trick)

Tape Only
(9 Trick)

Tape Only
U14 Inch Cartri dgtl

Dri ve i nterhce

Per tee

Pertec

Kennedv 6455

"axilul I Drives

4 Tape Drives

8 Tape Drives

1 Tipe Drive

DRIVE
CHARACTERISTICS

,
I

Sector Sizes -Bytes Up to 2K

Up to 2K

MIA

Error lTetection

MIA (In The Forlatter)

MIA (In The Foraatterl ,
,

Error Correction

MIA (In The Forlatter)

MIA (In The For.atter)

MIA (In The For.aUer!

Flaw Skipping

MIA (Block Re-writes)

In The Forlatter

,
,,
i
I

HOST
CHARACTERISTICS

!
I

DEC Bus Type

Unibus

a Bus

DEC Elulati on

TS-II/TUBO

T"-11

T"-l1

T"-11/TS03

Size of Buffer

MIA

"inilul Interleave

MIA

•

PHYSICAL
CHARACTERISTICS

•

Fori Factor

Single auad Width Board Single auad Width Board Single Cluad Width Board Single Quad Width Board

Power Supply

+5V DC I 4.0A "ax

+5V DC I 3.5A Typ

+5V DC I 4.0A "ax

+5V DC @3.SA Typ

Availability

Now

Mow

.1,630/1'5

'1,630/1'5

'1,670/1'5

DE" Price (U.S.)/CITY '1,550/1'5
CO""ENTS

Tri DenSity Tape Coupler Coupler For 12.5-125 ips Coupler For 12.5-125 ips
Up To 125 ips Speeds
NRZ/PE Forlatted Drives NRZ/PE Forlatted Drives

Peripheral Concepts

PRODUCTS-l0

,\
I
1
I

I
I
I
I

I
I

DEC

DISTRIBUTED l06IC CORP
(DIL06)

DISTRIBUTED l06IC CORP
(OIL06)

DISTRIBUTED l06IC CORP
(DIL06)

D9 214

ltV 342

Wi nchester Onl y
(8 or 14 Inch)

Winchester Only
(8 or 14 Inch)

Tape Only
(1/4 Inch Cartridge)

Winchester Only
(~-1/4 Inch)

r.ut iaterflCe

S"D

CDC Sentinel

ESDI

L... ,

2 Vi ncbesters

2 lIinchesters

1 Tape Drive

2 Ninchesters

PragraHable

NIA

128 Through lK

56 Bit ECC

NIA (In The For.atter)

CRC

~.-

~mE
[

,IIVE

~TERISTICS

21~

6~6

Irim

Stetar Sizes -Bytes Progra••able

Bit ECC

£rrar DetKti 011

£rrar CorrKti Dn

11 Bit Burst

NIA (In The For.atter)

32 Bit ECC

Fl. Skipping

Track Level

In The Far.atter

Track Level

DEC Bus Type

QBus

Q Bus

DEC Eauhti 011

RLOI/02

RK06/07

TK25 Far.at Ca.patible

RK06/07

Size of Buffer

One Sector

lK FIFO

One Sector

Nini.u. Interleave

MIA

NIl'

NIA

MIA

HOST
lACTERISTICS

PHYSICAL
CHARACTERISTICS

•

Far. Fittor

Single Quad Width Board Single Quad Width Board Single Quad Width Board One Dual Nidth Board

PMr Suppl y

+5V DC • 3.SA Typ
+12V DC @0.3A Typ

+~V

DC • 3.~A Typ
+12V DC • 0.3A Typ

+~V

Availahili ty

NOIf

Naif

Now

3Q 1985

DE" Price (U.S.)/QTY $1,670/1'5

$1,670/1'5

$l,7~0/I's

$1,850/1's

CD""ENTS

"icrD POPII Coapatible

Supports "icroVAX

.
DC @4.0A "ax

+SV DC I 3.SA Typ
+12V DC @0.3A Typ

I
PRODUCTS-II

( ; ) Peripheral

Conc~pts

DEC

"ANUFACTURER

DISTRIBUTED LD6IC CORP
(DIL06)

"OBEL NU"BER

D9 614

CONTROLLER TYPE

lIinch.st.r Oni y
(5-1/4 Inch)

DISTRIBUTED L06IC CORP
(DIL06)

DISTRIBUTED L06IC CDRP
(DILD6)

DISTRIBUTED L06It t~
(DIL06)

DD 634

DD 61'

D9 228

Winch.ster Only
(5-1/4 Inch)

lIinchester Only
(5-1/4 Inch)

lIinch.ster On! y
(8 or 14 Inch)

DRIVE
CHARACTERISTICS

,
t
!

-,
t

Drive interface

ST506

ST506/D"A Syst.ls

"axilul I Driv.s

2 lIinch.sters

2 cOn. 51506 and/or On. 2 lIinch.sters
D"A Systels)

2 Winchesters

128 ThroulJh lK

128 Through lK

Prograllabl.

S1506

S"D (2 "Bytes/sec)

I
t
t

,
I

I
i

I
t

Sector Sizes -Bytes ProlJraNable

I
I

I
I
I

Error Detection

32 Bit ECC

56 Bit ECC

Error Correction

11 Bit Burst

12 Bit Burst

Flaw Skipping

Track Level

DEC Bus Type

DBus

g Bus

DBus

g Bus

DEC Elulation

RLOI/02

RLOI

RKQ6/07

R"02/0S/BO

Size of Buffer

One Sector

"inilul Interleave

MIA

M/A

NIA

One Dual Width Board

One Dual lIidth Board

Single Quad lIidth Board

HOST
CHARACTERISTICS

(

PHYSICAL
CHARACTERISTICS
Fora Factor

.
PDwer Supply

+5V DC • 3.5A Typ
+12Y DC • O.3A Typ

+SV DC • 3.5A Typ
+12Y DC • O.3A Typ

+5V DC • 4.0A Typ
+12Y DC • 0.3A Typ

+5Y DC • 3.SA Typ
+12V DC @O.SA Typ

Avai 1abi li ty

Now

$1,B85/1's

$1,950/1'5

$2,090/1'5

DE" Price (U.S.)/QTY $1,BBS/l's
CO""ENTS

o
.... ------

Supprts "icro PDP-II

Peripheral Concepts

----~--------.-- .--.. ~

PRODUCTS-12

DEC

DISTRIBUTED LOGIC CORP
(DIlOS)

DISTRIBUTED LOGIC CORP
(DIl06)

DISTRIBUTED lOGIC CORP
(DIlOG)

~IUIIER

DU 215

DU 142

IW 132

DQ 413

"'~Ig
""

Ninchester Only
(8 or 14 Inch)

Tape Only
(9 Track)

Tape Only
19 Track)

Winchester Only
18 Dr 14 Inch)

~l't Iftterhce

SliD

Pertec

Prial 1/0

1..,.. , Uri...

2 Ninchesters

4 Tape Drives

2 Winchesters

15o!ar Siz.. -Byte,

Prograalable

Up to 2K

Up To 2K

Prograllable

IError Detecti on -

56 Bit CRC

MIA (In The Forlatter)

In The Drive

"/Error Correcti on

11 Bit Burst

MIA (In The Forlatter)

MIA (In The Forlatterl

In The Drive

n•• Skipping

Track level

MIA (Block Re-writes)

Track Level

DEC Bus Type

Unibus

QBus

DEC Elula ti on

RK06/07

TS-11/TU80

None

RP02l03

Size of Buffer

One Sector

lK FIFO

One Sector

ftinilul Interleave

NIA

MIA

NIA

r;dIER
f

TYPE

DRIYE
o-rERISTICS'
I

HOST
"HARACTERISTICS

PHYSICAL
CHARACTER ISTI CS
Fori Factor

Single Quad Width Board Single •Quad Width Board Single Quad Width Board Single Quad Width Board

Paller Supp Iy

+5V DC @3.5A Typ
-ISV DC @O.SA Typ

+SV DC @4.0A !!ax

+5V DC @4.0A Typ

+SV DC @3.SA Typ

Avai labil i ty

Now

DEI'! Price (U.S.)/DTY $2,090/1'5

$2,150/1's

$2,310/1'5

$2,375/1'5

COI'!"EHTS

Tri Density Tape Coupler Supports lIicroVAX
Up To 125 ips Speeds
•

PRODUCTS-13

Q Peripheral co~cePts

DEC

"AMUFACTURER

DISTRIBUTED LOGIC CORP
(DIL06)

DISTRIBUTED lOGIC
(DIlOS)

"ODEL MU"BER

DII 414

DII 120

DII 226

"V 210

CONTROLLER TYPE

Winchester Only
(S or 14 Inch)

Tape Only
(7 or 9 Track>

Winchester Only
(S or 14 Inch)

IIinchester Only
(8 Dr 14 Inch)

DRIVE
CHARACTERISTICS
Drive interface

Pria. 110

Pertec

S"D (2.5 "Bytes/sec)

S"D (1.9118ytes/secl

"axilul t Drives

2 IIinchesters

4 Tape Drives

2 IIinchesters

2 Winchesters

,
I

\
Sector Sizes -Bytes Progral.able

MIA

Prograllable

Progralaable

Error Defection

In The Drive

LRC, CRC

56 Bit ECC

Error Correction

In The Drive

None

11 Bit Burst

Flail Skipping

Track Level

MIA

Track Level

i
!

HOST
CHARACTERISTICS

(

DEC Bus Type

II Bus

QBus

DEC Elulati on

RLOI/02

T"-11

"SCP

"D,." Type Devices

1
1
I

1
I

Size of Buffer

One Sector

FIFO

"inilul Interleave

MIA

NIA

MIA

NIA

MIA

PHYSICAL
CHARACTERISTICS

•

Fori Factor

Single Quad IIidth Board Single Quad IIidth Board Single Quad Width Board Single Quad Width Board

Paller Supply

+5V DC @3.5A Typ

+5V DC @3.5A "ax

+5V DC @4.7A Typ
+12V DC @0.3A Typ

+5V DC @3.5A Typ
+12V DC @O.3A Max

Availabi Ii ty

NOli

311 1985

NOli

DE" Price (U.S.)/QTY $2,375/1' 5

$2,425/1'5

$2,500/1'5

$2,67511'5

CO""ENTS

SOObpi NRZ Tape Only,
Up to 112.5 ips Speeds

Micro PDP/VAX COlpatible Supports HicroVAX

Peripheral Concepts

PRODUCTS-14

...... ------.---~,'----*. -,--..---- -. -:-'""'-'-'~

----------~--~-----

.'--,

DEC

DISTRIBUTED LOSIC CORP
(DllOS)

DISTRIBUTED LOSIC CORP
(DILOS)

DISTRIBUTED LOSIC CORP
(DIlOS)

DISTRIBUTED lOSIC CORP
(DIlOS)

""'"'"
.IIII€R

DU 218

DQ 202A

DU 202A

DU 216

-.ua TYPE

Ninchester Only
(8 or 14 Inch)

Winchester Only
(8 or 14 Inch)

lIinchester Only
(8 or 14 Inch)

jl-l" i liter face

SPID

S"D

SPID

ilia l "

4 Ninchesters

2 Ninchesters

2 lIinchesters

4 Winchesters

Prograllable

",....

I'"'"

I'"""

DRIVE

~ISTICS

r---

~or

•

Dri ves

Sizes -Bytes Progrulable

£nor Detection

32 Bit ECC

MIA

32 Bit ECC

(fror Corr eet ion

11 Bit Burst

MIA

11 Bit Burst

n.. Skipping

MIA

Track Level

Sector or Track Level

JEC Bus Type

Unibus

QBus

Unibus

DEC ElUlati on

RPlO2/05

RP02l03

RP02/03

RK06/07

Sizl! of Buffer

1.5K

MIA

Six Sectors

MIA

Fori Factor

Single Hex lIidth Board

Single Quad Width Board Single Quad lIidth Board Single Quad Width Board

Power Supp 1y

+5Y DC t 7.5A "ax
-12V DC t 0.6A "ax

+5Y DC t 3.5A Typ
+12Y DC t 0.3A Typ

+5Y DC t 3.5A Typ
+12V DC t 0.3A Typ

Avail abi li ty

NOli

Now

DE! Price (U.S.I/QTY $2,72511'5

$2,830/1'5

$2,830/1's

$4,950/1's

COPlPlENTS

LSI-11 COlpatible

LSI-1t COlpatible

HOST
'( :TERISTICS

ftinilul

Interleave

PHYSICAL
CHARACTER IST ICS

;

+5V DC @3.5A Typ
-t5V DC @0.5A Typ

(9 Peripheral Concepts

PRODUCTS-15

lit

~~~"""~"":X:;"-)

__i~""'S.-r~~",,"~_~_- __ .*,,-:~

........-...<.,.,_

_ _ ..

-----."-

---""- --~,~-*

---" .,." ...,..- --,

DEC

"ANUFACTURER

EftUlEX CORPORATION

E"UlEX CORPORATION

EftULEX CORPORATION

E"ULEl CO~AT:lI

"oDEl MUftBER

TC02

TC05

QT12

TC12

COM TROllER TYPE

Tape Only
(9 Track)

Tape Only
(1/4 Inch Cartridge)

Tap! Only
(9 Track)

Dri ve interface

hrtec

CDC Sentinel

QIC-02

Pertec

"axilul I Drives

4 Tape Drives

I Tape Drive

1 Tape Drive

4 Tape Dri V!S

DRIVE
CHARACTERISTICS

i
I

Sector Sizes -Bytes Up to 2K

512 Bytes

Up to 2K

Error Detection

MIA (In The Forlatter)

MIA (In The

Error Correction

MIA (In The Forlatter)

MIA (In The Foraatter:

Flaw Skipping

MIA (Block Re-writes)

In The For latter

MIA (Block Re-writes)

MIA (BlOCK R!-lIrites)

DEC Bus Type

QBus

Q Bus

QBus

Unibus

DEC Elulation

TS-11

TS-ll

TSll/TSV05

TS-l1

Size of Buffer

MIA

3.5K

16K

MIA

"inilul Interleave

MIA

NIA

Fortat~~

HOST
CHARACTERISTICS

(

I
\

•

Fori Factor

Single Quad Width Board Single Quad Width Board One Dual Width Board

Power Supply

+5V DC @S.OA "ax

+5V DC @6.0A "ax

+SV DC @3.0A Typ

+5V DC @5.2A "ax

Availability

Now

3Q 1985

Now

$1,200/1'5

$1,300/1'5

$1,400/1'5

DE" Price (U.S.I/QTY $1,200/1'5

PHYSICAL
CHARACTERISTICS

CO""ENTS

Coupler For 25-125 ips Coupler For SOOObpi/55 Supports "icroVAX and
MRZ/PE Drives, Supports ips Strealing Tape Drive "icroPDP
"icroVAX • "icroPDP

Peripheral Concepts

PRODUCTS-16

Single Quad Width Board \

Tri Density Tape Coupler
Up To 125 ips Speeds

DEC

r-;~

E"ULEX CORPORATION

TC1S

SC02/A Series

SC02lC Series

SC02lL Series

Tape Only
/1/4 Inch Cartridge)

IIincheshr Only
(8 or 14 Inch)

IIinchester Only
(8 Dr 14 Inch)

CDC Sentinel

S"D

1 Tape Drive

2 Winchesters

2 Ihnchesters

NIA

Prograllable

MIA (In The Forlatter)

32 Bit ECC

Errar CDrrecti Dn

MIA (In The Forlatter)

11 Bit Burst

11 Bi t Burst

11 Bit Burst

Fhl Skipping

NIA (Block Re-Nrites)

NIA

MIA

NIA

DEC Bus Type

Unibus

QBus

DEC Eluhti on

T5-11

RPI1E Controller With
RP02JRP03 Drives

RK611 Controller lIith
RK06/07 Drives

RLY11/12 Controller With
RLOI/02 Drives

Size of Buffer

3.SK

512 Bytes

NinilUi Interleave

NIA

3:1

~~
[

DRIVE

~TERISTICS

~u, I nterhce

L....
Lt..

Drim

SizK

-Byt~

. Errar Dttecti on

HOST
JARACTER ISTI CS

(

PHYSICAL
CHARACTERISTICS
For. Factor

• Width Board Single Quad lIidth Board Single Quad lIidth Board
Single Quad Width Board Single Quad

Power 5uppl y

+SY DC @6.0A "ax

+SV DC @S.7A "ax

+SY DC @S.7A "ax

+SY DC @5.7A Kax

Availabi li ty

NOli

$1,500/1'5

$1,500/1' 5

$1,500/1'5

DE" Price (U.5.)/QTY $1,400/1'5
CO""ENTS

Coupler For BOOObpi/5S
ips Strealing Tape Drive

I
PRODUCTS-17

Peripheral Concepts

DEC

•

I
t j ,

E~X

CORPORATION

E~LEX

CORPORATION

~ULEX

"ODEL NU"BER

TC03

IDOl

SC03/BX

SC03/"S

CONTROLLER TYPE

Tape Only
(9 Track)

Winchester Only
(5-1/4 Inch)

IUnchester Onl y
(8 or 14 Inch)

Winchester Only
(8 or 14 Inch)

~ULEX

CORPORATIOII

DRIVE
CHARACTERISTICS

'1 ;
.

CORPORATION

"ANUFACTURER

I .

i .

Drive interhce

\
Pertec

ST506

SftD (I.B "Bytes/sec)

S"D 11. 8 PlBytes /sec)
i
I

II ,

"aXilUI • Drives

4 lIpe Dr i ves

2 Winchesters

2 IUnchesters

2 Winchesters

.
I

Sector Sizes -Bytes Up To 641(

512 Bytes

Progn..able

I
I

,I
I

Error Dttection

M/A (In The Forlatter)

48 Bit ECC

32 Bit ECC

Error Correction

MIA (In The Forlatter)

11 Bit Burst

11 Bit Durst

11 Bit Burst

FIlII Skipping

N/A (Block Re-writes)

Sector Level

I
I
I

I
I

HOST
CHARACTERISTICS

(

DEC Bus Type

13 Bus

QBus

13 Bus

DEC Eluliti on

TS-ll
3.5K

PlSCP

R~02/R~3/R"05,

Size of Buffer

MIA

16K

"inilul Interleave

MIA

1:1

RPl80,

"SCP

RP06

PHYSICAL
CHARACTERISTICS
Fan Factor

13 Bus

•
•

Single Quad Width Board One Dual Width Board

12 Sectors

1:1

Single Quad Width Baard Single Quad Width Board

.
Paller Supply

+5Y DC • 6.0A Plax

+5V DC • 2.6A "ax

+5Y DC • 6.5A Plax

+5V DC • 6.5A "ax

Availability

313 1985

Mall

313 1985

$1,650/l's

$1,800/1's

$2,000I1's

OE" Price (U.S.)/QTY $1,600/1's
COPIPIENTS

Tri DenSity Tape Coupler Supports "icroVAX and
To 125 ips Speeds, "icro "icroPDP
VAX , "icroPDP Support

Peripheral Concepts

PRODUCTS-IS

r----=-'~---------~---

\
I
I

II
I

DEC

E"ULEX CORPORATION

EMULEX CORPORATION

E"ULEX CORPORATION

......
_ tIllER

TCll

SC12/A Series

St12/C Series

SC12/L Series

~TYP£

Tape Only
19 Track)

Winchester Only
(8 or 14 Inch)

Winchester Only
18 or 14 Inch)

Pertec

SMD

S"D

:":u • Drives

4 Tape Drives

2 lIinchesters

2 Winchesters

1-2 Depending on Model

I.S«t~ Sizes -Bytes

Up Tp b4K

Prograllable

Prograalable

r.
t

IIl\f

~ISTICS

~ ..

:nterface

j
I
I

Deteet'Ion

MIA (In The Forlatter)

32 Bit ECC

Carrecti on

N/A lIn The Forlatterl

11 Bit Burst

N/A IBlock Re-writes)

MIA

NIA

!It Bus Type

Unibus

It Eluliltion

TS-l1

RPI1E Controller With
RP02/03 Drives

RKbll Controller With
RK06/07 Dn yes

RLV11/12 Controller With
RIOI/02 Drives

- 3.SK

NIA

3:1

,fllll Skipping

HOST
AiRACTER ISTlCS

Size of BuHer
ftinilUi Interleave

PHYSICAL
CHARACTER ISTI CS
Fori Factor

•
Single Quad Width Board Single Quad lIidth Board Single Quad Width Board Single Quad Width Board

.
Power Suppl y

+SV DC @S.2A "ax

+SV DC @5.7A "ax

+5V DC @S.7A "ax

Avai labi Ii ty

Now

.2,800/1'5

$2,800/1's

.2,800/1's

DE" Price IU.S.I/QTY .2,000/1'5
rij""ENTS

Tri DenSity Tape Coupler
Up To 125 ips Speeds

PRODUCTS-19

Peripheral Concepts

DEC

"ANUFACTURER

E"UlEX CORPORATION

E~lEX

"ODEl NU"BER

SCI2/V Series

CONTROLLER TYPE

CORPORATION

E"UlEX CORPORATION

EllULEI CDRPQb;::a

•

SC21/B Serin

SC21/C Series

SC21/V Sfrirs

•

Winchester Only
(8 or 14 Inch)

Winchester Only
(8 Dr 14 Inch)

Winch!ster Onl y
18 or 14 Inchl

Dri ve interface

S"D

SliD

lIaxilUI I Drives

2 Winchesters

4 Winch esters

4 Winchesters

4 Wi nch!sters

DRIVE
CHARACTERISTICS

I
\

Sector Sizes -Bytes Prograllable

Prograluble

Prograllable

Progruuble

Error Detection

32 Bit ECC

32 Bit EeC

Error Correction

11 Bit Burst

II Bit Burst

11 Bit Burst

Flail Skipping

N/A

NIA

Unibus

RK711 Controller With

RHII Interface With
R"02/05, RP06 Drives

RK611 Controller With
RK06 Drives

RII03/05

RK06/07 Drives

Size of Buffer

"inilul Interleave

3:1

HOST
CHARACTERISTICS

(

DEC Bus Type
DEC Elulation

\
I

:
i

PHYSICAL
CHARACTERISTICS

I
I

Single Hex Width Board

+5V DC @8.0A "ax
-15Y DC @0.7A "ax

+5V DC @B.OA lIax
-15V DC @0.7A lIax

+5V DC @B.OA "ax
-15V DC @0.7A "ax

NOli

$3,800/1'5

$3,80011'5

$3,BOO/1's

FOri Factor

Single Quad Width Board Single Hex Width Board

Paller Supp Iy

+5V DC @S.7A "ax

Availabili ty

NOli

OEII Price IU.S.l/QTY $2,800/1'5
COII"ENTS

Peripheral Concepts

PRODUCTS-20

\
,
,

DEC

ENULEX CORPORATION

E"ULEl CORPORATION

E"ULEX CORPORATION

EPIULEX CORPORATION

SC3l/BX Seri es

TC7000

sen

SC71/BX Series

IIi nchester Onl y
(8 or 14 Inch)

, Tape Only
(9 Track)

lIinchester Only
(S or 14 inch)

lIinchester Only
(8 or 14 inch)

SPID

PertecfSTC

SPID

4 Ifinchesters

8 (Pertec), 4 (STC)
Tape Drives

4 Ifinchesters

1-4 Depending on "odel

~rograllable

Up to 64K

Prograllable

Prograa.able

32 Bit ECC

MIA (In The For.atter)

32 Bit ECC

11 Bit Burst

NIA (In The For.atter)

11 Bit Burst

MIA

MIA (Block Re-writes)

MfA

MIA

Unibus

CPlI, SBI Via V-Plaster

Unibus

Cache Busl Unibus

RHII Ifith RPl02f03/05, or T~3 Controller lIith
RPl80 (VAXI, RP06 (PDP) TU77 Drives

PlSCP

RPl03/05, RP06

512 Bytes

42 Sectors

1:1

MIA

1: 1

NIA

fa,.. Factor

Single Hex Width Board

Extended Hex Board

Single Hex Width Board

3 Board Set, Plus an
Interconnect Bd to RH70

'Oller Suppl y

+5V DC @S.OA Plax
-15V DC @0.7A Plax

+5V DC @10.0A "ax

+5V DC @7.5A Typ

+5V DC @11.0A "ax
-15V DC @1.0A "ax

AViilabi Ii ty

Now

3Q 1985

Now

DE" Price IU.S.I/QTY $4,300/1's

$4,500/1'5

$4,900/1'5

$7,950/1's

CO""ENTS

Tri Density Tape Coupler
Up To 125 ips Speeds

r'drl«'

"1_'
;

DriVes

~. Si:H -Bytes

!lIST

T£JIISTlCS

It EJuliti on

'It

of Buffer

llinillli

Interleave

PHYSICAl
CHARACTERISTICS

PRODUCTS-21

DeSigned For PDP11/70

Q Peripheral Concepts

DEC

ftANUFACTURER

E~LEX

CORPORATION

~LEX

CORPORATION

E"ULEX CORPORATION

,
-

"ODEL MU"BER

SC72/BX Series

CONTROLLER TYPE

Wi nchester On1 y
(8 or 14 inch)

SC7002

SC750/B2 Series

Winchester Only
(8 or 14 inch)

Winchester Only
(B or 14 inch)

SC7S0/B3 SIn t\
liincheshr Onlt
(8 or 14 inClIl

S"D (I.B "Bytes/sec)

S"D (2.4 "8ytes/sec)

S"D (l.B "8ytes/sec)

.,
f

;

i
i1
\I

DRIVE
CHARACTERISTICS
Drive interface

•

EtlUlEI CDRPttA'::a

5"D 11. B:1Bvtes. sec

;
I

4 Winchesters

4 liinchesters

Sector Sizes -Bytes Prograllable

Prograllable

Pr ogr aRabi e

Error Detecti on

32 Bit ECC

Error Correction

11 Bit Burst

Fla. Skipping

MIA

Sector Level

N/A

MIA

DEC Bus Type

Cache Busl Unibus

C"I, SBI Via V-"aster

C"I Bus

DEC ElUlati on

R"03/05, RP06, R"BO

R"03/05, R"BO

RP05/06

R"03/05, R"80

Size of Buffer

512 Bytes

ftinilul Interleave

NIA

MIA

"axilul I Drives

4 Winchesters

(

\
i

HOST
CHARACTERISTICS

•

NIA

PHYSICAL
CHARACTERISTICS

•

Fori Factor

3 Board Set, Plus an
Eltended Hex Board
Interconnect Bd to RH70

Extended Hex Board

Extended Hex Baard

Paller Supply

+5V DC • 11.0A "ax
-15V DC @1.0A "ax

+5V DC • 11.0A "ax

+5Y DC • 10.0A "ax
-15V DC @0.7A "ax

-15V DC @O.7A "ax

NOli

S8,950/1's

SB,950/1's

SB;950/1's

For YAX-llJ750

For VAX-11/750

Availability

DE" Price (U.S.)/QTY $7,950/1'5
CD""ENTS

o
-

Designed For PDP11/70

Peripheral Concepts

PRODUCTS-22

+5Y DC @10.0A "ax

DEC

r-:-no

E"ULEI CORPORATION

E"ULEX CORPORATION

5C758/Bl Series

SC780/B2

SC7BB

lIinchester Only
18 or 14 inch)

Winchester Only
18 or 14 inch)

Winchester Only
IS or 14 inch)

~fI Ilterhcl

StlD 12 tlBytes/sec)

SKD 11.B "Bytes/sec)

StlD 11.8 "Bytes/sec)

StlD 11.B "Bytes/sec)

4 lIinchesters

8 IIi nchesters

4 Winchesters

BWinchesters

Prograllable

E"ULEX CORPORATION

E~LEX

SC7000/BI Series

~1119

f(~nPE

CORPORATION

lllYE

~ISTICS
!

r"" "".
D.

:stetar Sins -Bytes . Prograllable
fcrar Detecti on

32 Bit ECC

frrar Correcti on

11 Bit Burst

Fl. Skipping

M/A

MIA

M/A

IC Bus Type

e"l, SBI Via V-tlaster

Ctll Bus

SBI Bus

DEC Eaulation

Rtl03/05, R"SO

Rtl03/05, Rtl80

RP06

R"03/05/80

Size of Buffer

12 Sectors

512 Bytes

ftini lUI Int er 1eave

M/A

N/A

MIA

N/A

Fort FactDr

Extended Hex Board

Po.er Suppl y

+5V DC @11.0A "ax
-t5V DC @O.7A tlax

+5V DC @to.OA tlax
-15V DC @O.7A "ax

+5V DC @to.OA "ax
-t5V DC @t.OA "ax

+5V DC @10.0A "ax
-15V DC @t.OA Max

Availability

Nolt

Nalt

$9,950/1'5

$13,500/1'5

$14,500/1'5

Must Be Used lIith
V-tlaster/7BO Adapter

tlust Be Used With
V-Master/780 Adapter

HOST
-1CTERISTICS

PHYSICAL
CHARACTERISTICS

DER Price IU.S.I/QTY $B,950/1's
CORtlENTS

•

For Use With VAX-11/7S0 For VAX-11I7S0
or 111780

I
PRODUCTS-23

Q Peripheral Concepts

DEC

"ANUFACTURER

GENERAL ROBOTICS

\.
\

GENERAL ROBOT!CS
-

RXV21

STVll

"WVll

S"Vl1

Floppy Only
(5-1/4 or 8 Inch)

Tape Only
(1/4 Inch Cartridge)

Winchester Only
(5-1/4 Inch)

Winchester Only
(S or 14 inchl

SASOO/450

QIC-02

ST506

S"D

2 Floppies

2 Tape Drives

2 liinchesters

2 IIi nchesters

Sector Sizes -Bytes 256 Through lK

512 Bytes

128 Through lK

Prograllable

Error Detection

MIA

MIA (In The For.atter)

MIA

Error Correcti on

MIA

MIA (In The For.atter)

MIA

F1 all Ski pp i ng

MIA

MIA (Block Re-llrites)

MIA

DEC Bus Type

Q Bus

QBus

DEC E.ulati on

RX01, RX02

TS-11

RLOI/02

R"02/0S, RP02, RKObi{l?

Size of Buffer

MIA

One Sector

MIA

"ini.u. Interleave

NIA

MIA

~DEl

NU"BER

CONTROLLER TYPE
DRIVE
CHARACTERISTICS
Drive interface
~axi.u.

I Drives

-,
;
I

\
\
i

HOST
CHARACTERISTICS

(

,
\

PHYSICAL
CHARACTERISTICS
For. Factor

i
I

One Dual Width Board

•

One Dual Width Board

Single Quad Width Board Si ngl e Quad \iii dth Board :
\

Paller Supply

+5V DC @2.5A "ax

+5V DC @2.5A Typ

+SV DC @4.3A Typ
+12V DC @0.6A Typ

+5V DC @3.5A Max
+12V DC @O.3A Typ

Avai 1abi Ii ty

Mow

NOli

Now

Mow

$1,000/1'5

$1,500/1'5

$1,7S0/1's

DE" Price (U.S.I/QTY $1,000/1'5
COIIIIENTS

Supports Double Sidedl
Double Density Drives

( ) Peripheral Concepts

F'RODUCTS-24

~-------------'====------r---~'

DEC

I6ENERAL ROBOTICS

Winchester Only
(8 or 14 inch)

IILSI-TS11

Tape Only
(9 Track)

Only
(1/4 Inch Cartridge)

(2.5 "Bytes/sec)

CDC Sentinel
Tape Drives

1 Tape Drive

(In The For.atter)

(Block Re-writes)

In The For.atter

Bus
TS-lll TSYOS

16K Cache

1:1 (Up To l.eftB/sec)

ngle Quad Nidth Board

ngle Quad-Nidth Board

ngle Quad Width Board

+SV DC • 6.SA "ax

ngle Quad Width Board

DC @a.SA l'Iax

,895/1'5

000/1'5

i Density Tape Coupler
To 125 ips Speeds

(

PRODUCTS-25

Q Pe.ripheral Concepts
.. -~ ..

.... ''''!'"

DEC

I1ANUFACTURER

"DB SYSTE"S

"DB SYSTEI'IS

"DB SYSTE"S

I'IDB SYSTEIIS

I'IODEL NU"BER

I'ILSI-RKll

"LSI-Rl'l11

I'ILS I-DK ll-R"

I'ILSI-DKl1-RP

CONTROLLER TYPE

Winchester Only
(8 or 14 inch)

lIinthester Only
(8 or 14 inch)

Dri ve interface

SI'ID

SI'ID (2.4

S"D (2. 4 ~BytesJ set'

"axilul I Drives

2 IIi nchest er,

2 lIinchesters

2 Winchesters

Sector Sizes -Bytes Prograllable

Prograllable

128 Through lK

Error Detection

32 Bit ECC

Error Correction

11 Bit Burst

Flaw Skipping

N/A

NIA

N/A

MIA

DEC Bus Type

o Bus

DEC Elulation

RK06/07

RI'I02/03, R"80

R"Q3/0S, R"BO

RP06

DRIVE
CHARAC.TERISTICS

(

~Bytes/sec)

\1
i

HOST
CHARACTERISTICS
,

,
I
I

,
,

Size of Buffer

I.SK

1.SK

"inilul Interleave

MIA

NIA

I.SK

1.5K

1:1 (15"Hz Disk Rates)

I
I

PHYSICAL
CHARACTERISTICS

•

Fori Factor

Single Ouad Width Board Single Ouad lIidth Board Single Ouad Width Board Single Quad Width Boaro

Power Supply

+5V DC @7.0A "ax
+12V DC @0.4A "ax

+5V DC @9.SA "ax
+12V DC @O.hA "ax

+5V DC @9.SA "ax
+12V DC @0.6A ~ax

Avai labi Ii ty

Now

10 1985

$2,000/1'5

$2,330/1'5

DE" Price (U.S.)/OTY $2,00011'5
COI'II'IENTS

I
I
I

Peripheral Concepts

PRODUCTS-26

DEC

r'"

"DB SYSTE"S

"LSI-T"11

"DB-T"11

KDB-R" 1HI

KDB-DK11-R"

Tape Only
19 TracU

Tape Only
(9 Track)

Winchester Only
(S or 14 inch)

Winchester Only
(S Dr 14 inch)

Pertec

SKD

S"D (1.8 KBytes/sec)

4 Tape Drives

2 Winchesters

4 Winchesters

Up to 2K

Prograllable

~JUIIO
!:.wID!
TYPE
r-

-o-m

DRIVE

JSTICS

.,,, illterhce
!luI" •

Dri ves

Sectar Si zes -Bytes. Up to 2K
ifrrar Dttection

Parity, CRC

32 Bit ECC

£rrar Correcti on

Single Track

11 Bit Burst

fh. Skipping

MIA IBlock Re-writes)

MIA (Block Re-writes)

MIA

M/A

Unibus

HOST

~.tTERISTICS
Bus

IEC Bus Type

IEC E.ulation

TK-ll

T"-11/TUI0

RK02/03/0S

RM2J03/0S

Si:e of Buffer

16K

16 Byte

l.SK

1.SK

"ini.u. Interleave

MIA

N/A

MIA

N/A

PHYSICAL
CHARACTERISTICS
II>

for. Factor

Single Quad Width Board Single Hex Width Board

POller Suppl y

+5V DC @7.0A "ax

+SV DC @7.0A "ax

+SV DC @7.0A "ax
+12V DC @O.4A "ax

+5V DC @b.SA "ax
+12V DC @O.4A "ax

Availability

NOli

$2,950/1'5

$3,200/1'5

$3,900/1'5

DE" Price (U.S.)/QTY $2,600/1' s
CO""ENTS
!

Single Quad Width Board Single Hex Width Board

Forlatter/Controller For Forlatter/Controller For
NRZ/PE Tape Drives Up To MRZ/PE Tape Drives Up To
125ips Speeds
125ips Speeds

PRODUCTS-27

Peripheral Concepts

DEC

"DB SYSTEIIS

"ANUFACTURER

IIICRO TECHNOL06Y IMC

"ICRO TECHNOLOGY INC

IIICRO TECHNOLOGY lit
-

IIODEL NUttBER

IIDB-DKl1-RP

tlXV22

IIXV22"

ttXV50

CONTROLLER TYPE

Winchester Only
(B or 14 inch)

Floppy Only
(B Inch)

Floppy Onl y
(S-1/4" Inch)

Floppy Only
(5-1/4" Inch)

DRIVE
CHARACTERISTICS

:
I
I

Drive interface

SliD (l.B ttBytes/sec)

SA800

SA460

"axilul I Drives

4 Winchesters

4 Floppies

I
I

Sector

(

Siz~s

-Bytes Progral.able

256 Through lK

Error Detection

32 Bit ECC

N/A

NIA

Error Correction

11 Bit Burst

MIA

NIA

MIA

Flail Skipping

N/A

MIA

DEC Bus Type

Unibus

g Bus

QBus

DEC Elulation

RP06

RXOI/02

RX02

RX50

Size of Buffer

1.SK

One Sector

"inilul Interleave

NIA

MIA

NIA

I,
i

I
\
\

HOST
CHARACTERISTICS

PHYSICAL
CHARACTERISTICS

•

Fori Factor

Single Hex Width Board

One Dual Width Board

Paller Suppl y

+5V DC @7.0A lIax
+12V DC @O.4A "ax

+5V DC @2.SA Typ

+5V DC @2.5A Typ

+SV DC @2.SA Typ

Availability

NOli

Now

NOli

DEli Price (U.S.)/QTY $3,900/1'5

$B75/1's

$875/1'5

$96S/l's

COttttENTS

22 Bit Addressing,
Single/Double Density

Single/Double Density,
22 Bit Addressing

Peripheral Concepts

PRODUCTS-28

..... ......
~

DEC

~ACTIftII

"ICRO TECHNOL06Y INC

"ICRO TECHMOL06Y INC

"ICRO TECHNOL06Y INC

"ICRO TECHNOLOGY INC

'.a.IlUllBER

~V11"

~Yll

"122

tlSV05

~TRIlLER TYPE

!linchester Only
(5-1/4 Inch)

Wi nchester Onl y
(B Inch)

Floppy Only
(5-1/4 or B Inch)

Tape Only
(1/4 Inch Cartridge)

ST506

SA1000

SABOO/460

QIC-02

4 !linchesters

4 Floppies

4 Tape Drives

12B Through lK

256 Through lK

512 Bytes

DRIVE
iO!MACTERISTlCS

r~"IYI interface

l.. . ,

IIrhH

Sector Si zes -Bytes 12B Through lK
Error Detecti on

56 Bit ECC

MIA

NIA (In The For.atter)

Error Correcti on

11 Bit Burst

MIA

MIA (In The For.atter)

Skipping

Sector Level

N/A

NIA (Block Re-writes)

DEC 8us Type

QBus

Unibus

g Bus

DEC Eaulation

RLOI/02

Rl01/02

RIOI/02

TSV05

Size 01 BuUer

MIA

One Sector

16K

"iniaul Interleave

NIA

MIA

NIA

fl ••
I

HOST
CHARACTERISTICS

PHYSICAL
CHARACTERISTICS
Fori Factor

One Dual lidth Board

Palter Suppl y

+5V DC @4.5A "ax

Ani labili ty

Now

OE" Price (U.S.)/QTY .9751 l' s

ftne Dual !lidth Board

Single Quad Width Board One Dual Width Board

+5V DC I 4.5A "ax

+SV DC I 2.5A Typ

+5V· DC @3.5A Typ

NOIt

Nolt

NOIt

.975/1's

$1,045/1'5

$1,425/1'5

Single/Double Density,
22 Bit Addressing

On Board D"A, Co.patible
lith Block "ode

CD""ENTS

PRODUCTS-29

(9 Peripheral Concepts

.-----.-~

.--"'----~.--:-::==--

_...

DEC

"INI

"ODEL NU"BER

"CT1300

SJlV15

EDC24

CTCVllA

CONTROLLER TYPE

Ni nchester Onl y
(8 Dr 14 inch)

Winchester Onl y
(8 Dr 14 inch.

Winchester Only
(8 Dr 14 inch)

Tape Only
(1/4 Inch Cartridge'

Drive interface

S"D (2 "Bytes/sec)

S"D

QIC-02

"axilul I Drives

2 Ninchesters

1 TaDe Drive

Sector Sizes -Bytes Prograllable

Prograllable

512 Bytes

Error Deticti on

32 Bit Fire Code

NIA (In The Forutter:

Error Correction

11 Bit Burst

11 Bi t Burst

N/A (In The Forutterl

Flail Skipping

NIA

N/A (Block Re-writes)

C~UTER

TECHNOL06Y "INI CO",UTER TECHNOL06Y "INI CO"PUTER TECHNOL06Y PLESSEY PERIPHERAl
SYSTE"S

"ANUFACTURER

DRIVE
CHARACTERISTICS

HOST
CHARACTERISTICS

(

i
I
1

;

DEC Bus Type

QBus

Unibus

QBus

DEC Elulation

RK06/07

RK06

None

Size of Buffer

2 Sectors, Ping Pong

Dual 512 Bytes

NIA

"inilul Interleave

1:1

1: 1

N/A

I
I

!
i

PHYSICAL
CHARACTERISTICS

•

II
,

Fon Factor

Single Quad Nidth Board Single Hex Nidth Board

Paller Supply

+5V DC @6.5A "ax

+5Y DC @6.5A "ax

+5V DC @2.4A Typ

Availability

NOli

$3,400/1's

$3,600/1'5

$460/1's

DE" Price (U.S.I/QTY $2,900/1'5

Peripheral Concepts

Single Quad Nidth Board One Dual Width Board

CO""ENTS

PRODUCTS-30

r. -----.----------------------------.-

DEC

,-~~

PLESSEY PERIPHERAL
SYSTEIIS

PlESSEY PERIPHERAL
SYSTE~

PLESSEY PERIPHERAL
SYSTEIIS

PlESSEY PERIPHERAL
SYSTE"S

t;1III8ER

XC21/31

XCV21/31

FCV21

DCV06B

Floppy Only
(5-1/4 Dr 8 Inch)

Floppy Only
(S-1/4 or 8 Inch)

Winchester Only
(S-1/4 Inch)

Winchester Only
(8 or 14 inch)

SA850/460

SA8S0/460

ST506

SliD

4 Floppies

4 Winchesters

2 Winchesters

256 Through lK

128 Through lK

Prograllable

~TYPE
I"""

....

DRIVE
_TERISTICS

~ .. interface

L.. ,

Drh"

Slctar Sizes -Bytes 256 Through lK

. (rrar Detection

NIA

MIA

32 Bit ECC

ECC

Errar Correction

MIA

11 Bit Burst

Syndrole Generation

Skipping

MIA

NIA

MIA

DEC Bus Type

Unibus

Q Bus

DEC ElUlation

RX02

RL02

RK06

SiZ! of Buffer

MIA

Three Sectors

ftinilUi Interleave

NIA

MIA

Fl.

(

HOST
fARACTERISTICS

PHYSICAL
CHARACTERISTICS
Fori Factor

Single Quad Width Board Single Quad Width Board One Dual Width Board

POller Supply

+5V DC @4.0A "ax

+5V· DC @4.0A lIax

+5Y DC @6.0A lIax

+5V DC @7.0A Typ

Availabi Ii ty

No.

$850/1"s

S900/1's

SI,305/1's

OEII Price (U.S.)/QTY S840/1's
CDIIIIEMTS

On Board SCSI Port

PRODUCTS-31

TNO Quad Width Boards

;

Q Peripheral Concepts

..~

DEC

PlESSEY PERIPHERAL
SYSTE"S

"ANUFAeTURER

PlESSEY PERIPHERAL
SYSTE"S

PLESSEY PERIPHERAL
SYSTE"S

PlESSEY PERIPHERAl
SYSTE"S
-

"ODEl NU"BER

DeV12

Dev03

DCVSl

DC02B

CONTROLLER TYPE

tlinchester Only
(8 Dr 14 inch)

tlinchesttr Only
(8 Dr 14 inch)

Itinchesttr Only
(5-114 Inch)

Itinchester Only
(8 Dr 14 inch)

"axi.u•• Drives

,...-

DRIVE.
CHARACTERISTICS
Drive interface

ell

......
,

,....
,

;

S"D
1 Itinchesttr

S"D (1.8 "Bytes/sec)
2 Itinchesters

5T506
4 Itinchesters

5"D 11.8 "Bytes/sec!
1
\

4 Winchesters
,

Sector Si zes- -Bytes PrDgra.lable

Progra••able

128 Through lK

Progra.lable

Error Detection

32 Bit ECC

32 Bit ECe

32 Bit ECC

Error Correction

11 Bit Burst

Flaw Skipping

NIA

Track Level

,
:

(

NIA

Track Level

,
I
I
I

,
I

I
I

HOST
CHARACTERISTICS

DEC Bus Type

QBus

Unibus

DEC E.uhtion

Rl02

R"02l03/05

~CP·

R"02l05

Size of Buffer .

Three Sectors

I'!ini.u. Interleave

NIA

N/A

NIA

N/A

PHYSICAL
CHARACTERISTICS

•
Two Quad Itidth Boards

Two Quad Itidth Boards

Single Quad Width Board Single Hex Width Board

Power SuppI y

+SV DC @7.0A "ax

+5V DC @7.0A Typ

+5V DC @6.0A "ax

+5V DC @9.0A Typ
-15V DC @O.7A Typ

Availabi Ii ty

Now

$1,615/1'5

$1,690/1'5

$1,925/1' 5

DEI'! Price (U.S.)/QTY $1,305/1'5
CO"I'!ENTS

Supports A.codyne Re.ovable Cartridge S"D Drive

Peripheral Concepts

Supports Plessey Storage
Architecture (PSA)

PRODUCTS-32

I
II

For. Factor

DEC

~CIIIER

PLESSEY PERIPHERAL
SYSTEIIS

PlESSEY PERIPHERAL
SYSTEIIS

QUAlO6Y

~d8£R

DCVSO

DCSO

o 8120

D4120

Winchester Only
(8 or 14 inch)

Tape Only
(1/4 Inch Cartridge)

FlDPPY Onl Y
(S-1/4" Inch)

~Iyt interface

ISliD

SliD

Kennedy 645S

SA460

1....... , Drives

4 liinchesters

4 Winchesters

1 Tape Dri ve

2 Floppies

Progral.able

512 Bytes

2S6 ThrDugh IK

t.Tm£R TYPE

....

DRIVE

~TERISTICS

SKt.. lim -Bytes PrDgra••able

Error Detecti Dn

32 Bit ECC

MIA (In The FDrlatter)

MIA

Error Correcti Dn

11 Bi t Burst

11 Bit Burst

MIA (In The Forlatter)

MIA

Fl,w Skipping

MIA

In The Forlatter

MIA

DEC Bus Type

9 Bus

Unibus

Q Bus

GBus

DEC Elulation

IISCP

TS-l1/TSVOS

RX02

Size Df Buffer

MIA

ftinilu, Interleave

MIA

N/A

HOST
CHARACTER IST ICS

PHYSICAL
CHARACTERISTICS
For. Factor

•

Single Quad liidth Board Single Quad Width Board One Dual Width Board

One Dual Width BDard

Power Suppl y

+5V DC @6.0A lIax

+SV DC @6.0A lIax

+5V DC @3.0A lIax

+SV DC @3.7A Max
+12V DC @O.09A Max

Avai labi li t y

3Q 1985

4Q 1985

NOli

SI, 995/1' s

SI,19511's

SI,250/1's

DEI! Price (U.S.)/GTY SI,790/1's
COIIIIENTS

Supports Plessey Storage Supports Plessey Storage
Architecture (PSA)
Architecture (PSA)

PRODUCTS-33

Single/Double Sided

(9 Peripheral Concepts

DEC

QUAlD6Y

MNUFACTURER

QUALD6Y

QUAlD6Y

QUAlD6Y
-

"DDEl NU"BER

D4140

D8250

D8255

D8260

CONTROLLER TYPE

Floppy Only
(8 Inch)

tlultifunction
(Winchester/Tape)

tlultif unction
(Winchester/Tape)

"ul ti f uncti an
(Winchester/Tapel

Drive interface

SA800

5T506 (Winchester),
Kennedy 6455 (Tape)

5T506 (Winchester),
Kennedy 6455

Availability

NOli

Single/Double Density,
Optional SASI Port

F'RODUCTS-71

Q Peripheral Concepts

VME

(

DUAL SYSTEI'IS

I'IANUFACTURER

DUAL SYSTEI'IS

DY-4 SYSTEI'IS INC

DY-4

SYSTE~S

INC

,
I

I'IODEL NUI'IBER

Optiutrack 32

V9TRK

DVI'IE 712

DVI'IE 715

CONTROLLER TYPE

IIi nchester Onl y
(B or 14 Inch)

Tape Only
(9 Track)

Floppy Only
(5-1/4 or B Inch)

lIinchester Only
(B or 14 Inch)

DRIVE
CHARACTER ISTI CS

,
!
I
I

!,
I

Drive interface

SI'ID (2.4 I'IBytes/sec)

SAB50/460

Pertec

SI'1D (2.4 MBvtes/sec:

,
I

l'Iaxi.u. I Drives

3 lIinchesters

B Tapes

4 Floppies

2 Wi nchesters

!
I

(

Sector Si zes .-Bytes 512-4K

Up To 64K

256-1K

Progr aa.abl e

Error Detection

32 Bit ECC

N/A (In The For.atter)

N/A

32 Bit ECC

Error Correction

11 Bit Burst

N/A (In The For.atter)

N/A

11 Bit Burst

Flaw Skipping

N/A

Block Re-writes

N/A

.iI
II
II
II

I
I

VI'IEBUS
':HARACTERISTICS

Support Level

24/32 Bit Addressing

B/16 Bit Data Paths

Requesterl Interrupter I

Size of Buffer

512K

Two 512 Byte FIFOs

64K DRAI'I

l'Iinilu. Interleave

1:1

N/A

1:1

PHYSICAL
CHARACTERISTICS

(

For. Factor

Dual High Eurocard

Power Supply

15V DC @3.0A l'Iax
-12V DC @0.5A "ax

+5V Dt @5.0A Typ

+5V DC @4.0A "ax
+1-12V DC @O.15A "ax

+5V DC @6.0A l'1ax

Availabi Ii ty

93 19B5

93 1985

Now

OEI'I Price (U.S.J/9TY $2,990/1's

$I,250/1's

$1.450/1 's

$2,097/1'5

COMMENTS

Tri Density Tape Coupler On Board DMA Control,
On Board 510, SASI and
RS-232 Ports

o
•

I
I,

Peripheral Concepts

PRODUCTS-72

On Board DI'IA Control,
On Board Track Buffer
Sockets for EPRO" (32Kl

• ..

--j

VME
tlANUFACTURER

DY-4 SYSTEIIS INC

ELECTRONIC IIODULAR
SYSTEII5

ELECTRONIC IIODULAR
SY5TEII5

FORCE COIIPUTERS

1I0DEl MUIIBER

SVIIE 716

HD-l

IITC-l

5Y5681:/1IFC-l

CONTROllER TYPE

Tape Onl y
(9 Track)

lIinchester Only
(5-1/4 Inch)

Tape Only
(9 Track)

!'luI ti functi on
(llinchester/Floppy)

DRIVE
CHARACTERISTICS
Drive interface

.
Per tee

ST506

Pertec

51506 (llinchester).
5A460 (Floppy)

4 lIinchesters

2 Tapes

3 Winchesters,
4 Floppies

128-11:

NIA

128-1K

lIaxi.u. I Drives

2 Tapes

Sector Sizes -Bytes Up To 21:

(

Error Detection

N/A (In The For.atterl

32 Bit Fire Code

NIA (In The For.atterl

32 Bit ECC

Error Correction

MIA (In The For.atterl

11 Bit Burst

MIA (In The For.atterl

5 Bit Burst

flail Skipping

Block Re-llrites

MIA

Block Re-writes

MIA

SUDport Level

32 Bit Addressing

Interrupter

8/16

Sia of Buffer

1281: (SI2K Optional)

1110 sectors

1281:

One Sector

ftinilul Interleave

NIA

MIA

VIIEBU5
ICHARACTERI 511 CS
_..

PHYSICAL
CHARACTER IST ICS
Factor

fori

rOler

Suppl y

Bit Data Paths

A32:DI6, A24:D16

Dual High Eurocard

+5Y DC @5.0A lIax

+SY DC @S.OA !'lax

+5V DC @S.OA !'lax

+5Y DC @3.0A Max

91 1985

NOli

MOil

NOli

$1,495/1's

$1,850/1'5

S1, 380/1' s

!~,allabi1ity

:CE~

Price IU. S. I/OTY $2,10011'5

~~ENTS

On board DIIA control
On board DIIA Control
Sockets for EPROII (64Kl Opti.ized for Unix
Tri Density Coupler
Double Eurocard

PRODUCTS-73

Peripheral Concepts

VME

(

GENERAL "ICRO SYSTE"S

I"ANUFACTURER

HA"ILTON STD DIG SYSTE"S HA"IlTDN STD DIG SYSTE"S INTEGRATED SOLUTIONS
(FDR"ERlY"OSTEK)
(FOR"ERlY "OSTEK)

G"S V09

"ODEl NU"BER

"K 75803

"K 75805

V"E-QIC2/8

CONTRDLLER TYPE

"ul ti functi on
(Ninchester/Floppy)

Floppy Dnly
(5-1/4 or 8 inch)

Ninchester Dnly
(8 or 14 Inch)

Tape Dnly
(1/4 Inch Cartridgil

DRIVE
CHARACTERISTICS
Drive interface
"axilUI I Drives

ST506 (Ninchester),
SA460 (Floppy)

SA850/460

3 lIinchesters,
4 Floppies

4 Floppies

S"D (3 "Bytes/sec)

QIC-02

:
,
;

2 lIinchesters

I Tape

,
;

Sector Sizes :Bytes I2S-1K

256-1K

Prograllable

512 Bytes

Error Detection

32 Bit ECC

N/A

32 Bit ECC

N/A (In The Formatter)

Error Correction

11 Bit Burst

N/A

11 Bit Burst

N/A (In The Formatter)

Flail Skipping

N/A

Block Re-writes

,
,I
,

Bit Addressing N/A

Support level

N/A

"aster/Slave A24/DI6

16/24/32

Size of Buffer

5I2K

256 Bytes

12K Cache

32K Cache

NIA

N/A

"inilul Interleave

1:1

NIA

PHYSICAL
CHARACTERISTICS
Dual High Eurocard

Dual High Eurocard

Power Supply

+5V DC t 2.5A Typ

+5V D~ t 3.0A "ax

+5V DC t 3.0A Typ
-12V DC @0.5A Typ

+5V DC @2.0A "ax

Avai Iabi Ii ty

Q4 1985

Neiw

NOli

DE" Price (U.S.)/QTY $2,995/1'5

.714/1'5

$2,260/1'5

$2,000/1'5

CO""ENTS

Single/Double Sided,
Single/Double DenSity
Floppies

o
.-.--.~

.. ..--.--

Peripheral Concepts

----_._..... _---------_..... ---.

PRODUCTS-74

Fori Factor

(

!
II

V"EBUS
. !:HARACTERISTICS

Also Has On Board RS232
Serial Ports And Real
Tile Clock

VME

(

ftAIIUFACTURER

INTEGRATED SOLUTIONS

INTERPHASE CORPORATION

IRONICS INC

ftODEL NU"BER

V"E-TC 50

V/S"D 3200

VITAPE 3209

IV-327S

CONTROLLER TYPE

Tape Only
(1/4 Inch Cartridge)

Winchester Only
(8 or 14 Inch)

Tape Only
(9 Track)

Winchester Only
(8 or 14 Inch)

Dri ve interface

9IC-02

S"D (3 "Bytes/sec)

Pertec

S"D (3 "Bytes/sec)

"axilul I Drives

2 Tapes

2 Winchesters

8 Tapes

2 Winchesters

Prograllable

Up To b4K

Prograalabl e

DRIVE
CHARACTER IST ICS

Sector Sizes -Bytes Up To b4K

(

Error Detection

NIA (In The Forlatter)

32 Bit ECC

N/A (In The Forlatter)

32 Bit ECC

Error Correction

NIA (In The Forlatter)

11 Bit Burst

N/A (In The Forlatter)

11 Bi t Burst

Flail Skipping

Block Re-liri tes

NIA

Block Re-lirites

N/A

Support Leve 1

N/A

32 Bit Data/ Address

32 Bit Datal Address

"aster, Interrupter

Size of Buffer

NIA

12K

8K (128K Optional)

NIA

"inilul Interleave

NIA

1: 1

NIA

1:1

V"EBUS
CHARACTERISTICS

PHYSICAL
CHARACTER ISTI CS

Fori Factor

Dual High Eurocard

POller Supply

+SV DC @2.0A "ax

~SV

DC @3.0A "ax
-12V DC @0.5A "ax

+SV DC @4.0A Typ

+5V DC @5.0A "ax

Avai labi li ty

NOli

NOIf

94 1985

92 1985

DE" Price (U.S.)/9TY $2,00011' 5

$2,99511' 5

$1,795/1'5

$2,995/1'5

CO""ENTS

On Board D"A

Cache

PRODUCTS-75

Tri DenSity Tape Coupler On board D"A ~ Cache,
Unix Optillized

Peripheral Concepts

VME

(

I!!ANUFACTURER

!!ICROPROJECT CORPORATION IIICROPROJECT CORPORATION IIINI COIIPUTER TECHNOL06Y !!INI CO!!PUTER TECHNOL~6~
(DIV. E-H INTERNATIONAL) (DIV. E-H INTERNATIONAl! !
,

!!ODEL MurlBER

2501-7509-7

IICT b020

2501-7550-2

!lCT b090

I
t

CONTROLLER TYPE

Winchester Onl y
(8 or 14 Inch)

Tape Only
(9 Track)

Tape Only
(1/4 Inch Cartrldg@)

II
I

DRIVE .
CHARACTERISTICS
Drive interface

I
Pertec

Pertec

SlID

DEI Funnel

I
I,

,I
I

!!axilul I Drives

2 Tapes

Sector Sizes --Bytes NIA

(

2 lIinchesters

8 Tapes

1 Tape

Prograllable

Up To b4K

MIA

Error Detecti on

NIA (In The Forlatter)

MIA

N/A (In The Forlatterl

CRC

Error Correction

NIA (In The Forlatterl

N/A

MIA (In The Forlatterl

HDLC Type

Flaw Ski ppi ng

Block Re-writes

N/A

Block Re-writes

MIA

I
I
I

I
I
II
I

Support Level

8/1b/32 Bit Data Paths

N/A

Arbiter, Interrupter

NIA

Size of Buffer

16,32 or 64K

MIA

!!inilul Interleave

NIA

MIA

I
i

PHYSICAL
CHARACTERISTICS

Dual High Eurocard

+5V DC @2;6A Typ
-12V DC @0.4A Typ

+5V DC @3.0A "ax

Now

$2,695/1'5

$2,075/1'5

$545/1'5

On Board 16 bit D!!A

Tri Density Tape Coupler Supports 30/90 ips Tape
Up To 200 ips Speeds
Speeds

Fori Factor

Dual High Eurocard

Power Supply

+5V DC @2.bA Typ

Availability

Now

DE" Price (U.S.!/QTY $1,595/1'5

I
I!
I

VilE BUS
:HARACTER ISTI CS

CO""ENTS

I
I

Coupler Only

Peripheral Concepts

PRODUCTS-76

VME

(

!;uFACTURER

"INI COMPUTER TECHNOL06Y "INI COMPUTER TECHNOLOGY "IZAR CORPORATION
(DIV. E-H INTERNATIONAL) (DIY. E-H INTERNATIONAL)

MIZAR CORPORATION

IMIDEL NUMBER

"CT 6600

"CT 6700

V"E 7400

Y"E 8400

CDNTROLLER TYPE

"ultifuncti on
(Winchester/Tape)

Multifunction
(Winchester/Tape)

"ul ti function
(Winchester/Floppy)

Floppy Only
(5-1/4 or 8 inch)

DRIVE
CHARACTER ISTI C5

I
I

(

Dri ve i nted ace

ESDI (Winchester),
5T506 (Winchester),
S"D (3 "Bytes/sec),
FUjitsu 241SA/EPI (Tape) FUjitsu 2451A/EPI (Tape) SA 460 (Floppy)

SABSO/460

"axi.u. I Drives

2 liinchesters,
1 Tape

Sector Sj zes -Bytes Prograllable

2 liinchesters,
1 Tape

4 lIinchesters,
4 Floppies

4 Floppies

Prograllable

128-1K

2Sb-1K

Error Detection

32148 Bit ECC

32/48 Bit ECC

32 Bit ECC

N/A

Error Correction

11 Bit Burst

8 Bit Burst

NiA

flail Skipping

Sector Level

N/A

I
I

V"EBUS
CHARACTER ISTI CS

Support Level

16/32 Bit Data Transfers 16/32 Bit Data Transfers NIA

Interrupter

Size of Buffer

32K Cache

Dual Ping Pong

None

Mini.uI Interleave

N/A

NIA

1:1

N/A

Dual High Eurocard

Single High Eurocard

+5Y DC @3.7A Typ

+5Y DC @O.7A Typ

93 1985

Q3 1985

NOli

$2,075/1'5

$2,295/1'5

$400/1'5

On Board DMA

Single/Double Density,
Single/Double Sided

PHYSICAL
CHARACTERISTICS
I

For. Factor

Dual High Eurocard

POlfer Supply

+5Y DC @4.0A "ax

Availability

Q4 19B5

OEM Price (U.S.)/QTV $2,075/1'5

Dual High Eurocard
_ +5Y DC @4.0A "ax

COMMENTS

PRODUCTS-77

Peripheral Concepts

...
VME

(

I'IANUFACTURER

1'I0TOROlA INC

I'IOTOROlA INC

1'I0TOROlA INC

1'I0DEl NUI'IBER

I'IVI'IE 315

I'IVI'IE 319

I'IVI'IE 320

I'IVI'IE 350

CONTROLLER TYPE

Floppy Only
(5-1/4 or B inch)

Floppy Only
(or FloppyTape)

l'Iultif uncti on
(Ninchester/Floppy)

Tape Only
(1/4 Inch Cartridge)

Drive interface

SAB50/460

SAB50/460, or
Cipher Floppy Tape

ST506 (Ninchester),
SAB50/460 (Floppy)

QIC-02

l'Iaxilul I Drives

4 Floppies

1 FloppyTape+2 Floppies, 2 Ninchl 2 Floppies, or 2 Tapes
4 Floppies
or 4 Floppies

Sector Sizes'-Bytes 256-1K

256-1K

12B-IK

512 Bytes

Error Detecti on

NIA

32 Bit ECC

NIA (In The Formatterl

Error Correction

NIA

MIA

11 Bit Burst

N/A (In The Forlatter)

Flaw Skipping

N/A

NIA

Sector level

Block Re-writes

1'I0TOROlA INC

,
i

DRIVE·
CHARACTERISTICS

II
,
!
I
I

I
II
I

I
I

(

VI'IEBUS
CHARACTERISTICS

Suoport Level

Requester/ Interrupter

NIA

Requesterl Interrupter

Requesteri Interrupter

Size of Buffer

2K-BK

32 KB

16K

l'Iinilul Interleave

N/A

NIA

PHYSICAL
CHARACTERISTICS

II
I

I
I

Fori Factor

Dual High Eurocard

Power Supply

+5V DC @4.0A l'Iax
+/-12V DC @O.5A l'Iax

+5V DC @4.6A l'Iax
+1-12V DC @O.05A lax

+5V DC @2.6A Typ
+/-12V DC @O.02A Typ

+5V DC @5.0A Typ

Availability

Now

Q4 1985

$1,395/1'5

$1,650/1's

$1,700/1'5

OEI'I Price (U.S.)/QTY $1,295/1'5
COI'II'lENTS

On Board DI'IA, SCSI Port On Board DI'IA, SCSI Port
For Hard Disk Control
For Hard Disk Control

Peripheral Concepts

PRODUCTS-78

Two Serial Ports

VME

(

/IAMUfACTURER

MOTOROLA INC

PLESSEY MICROSYSTE"S

SI6EN CORPORATIDN

IIODEt NUMBER

MV"E 360

MV"E 43SA

P"E VFC-l

DC-S

CDNTROLLER TYPE

Winchester Only
/8 or 14 Inch)

Tape Only
(9 Track)

"ul ti functi on
(Winchester/Floppy)

Winchester Only
(5-1/4 or B inch)

Dri ve interfice

S"D (3 "Bytes/sec)

Partec

ST506 (Winchester),
SA850/460 (FIDpPY)

SAI000/ST506

"axilul I Drives

2 Winchesters

2 Tapes

3 Winchesters,
4 Floppies

4 Winchesters

Up to 2K

128-1K

12B-IK

DRIVE
CHARACTERISTICS

Sect Dr Sizes -Bytes Prograllable

ErrDr Detection

32 Bit ECC

N/A (In The For.atter)

32 Bit ECC

Error Correction

11 Bit Burst

N/A (In The For.atter)

5 Bit Burst

11 Bit Burst

Flaw Skipping

Sector Level

Block Re-writes

N/A

NIA
I

(

Y"EBUS
CHARACTERISTICS
Support Level

32 Bit Datal Address

NIA

A32:DI6, A24:D16

Master A24/D16

Size of Buffer

12K

One Sector

512 Bytes

"inilul Interleave

1:1

NIA

MIA

NIA
I

PHYSICAL
CHARACTERISTICS
I

Fori Factor

Dual High Eurocard

Single High Eurocard

Dual High EurDcard

Dual High Eurocard

Power Supply

15V DC • 3.0A Max
-12V DC • 0.5A "ax

+5Y DC • 5.0A Typ

+5V DC • 3.0A "ax

+5V DC @3.0A Typ
-12V DC @0.5A Typ

Availability

Now

DE" Price (U.S.)/QTY 53,200/1'5

5875/1'5

51,14111 '5

$1,200/1'5

COMMENTS

NRZ/PE Tape Drives,
ips Speeds, "at oral a
liD Channel COlpatible

On Board D"A • Cache

•

Dn Board D"A

(
PRODUCTS-79

Peripheral Concepts

VME
SIGEN CORPORATION

IIIANUFACTURER

SIGNETICS CORPORATION

XYlDGICS

XYlD61CS

(

\
IIODEl NUIIBER

DC-7

SIIVIIE 4300A

751

772

CONTROllER TYPE

lIinchester Only
(S or 14 Inch)

lIul ti function
(liinchester/Floppyl

lIinchester Only
(S or 14 Inch)

Tape Only
(9 Trackl

IDrive interface

SliD

ST506 (liinchester),
SAS50/460 (Floppyl

SltD

Pertec

Itaxilul I Drives

2 lIinchesters

2 lIinchesters,
2 Floppies

2 lIinchesters

1 Tape

Sector Sizes .-Bytes Prograllable

12B-IK

Prograllable

Up To 64K

Error Detection

32 Bit ECC

N/A (In The Forlatter)

Error Correction

11 Bi t Burst

11 Bit Burst

11 Bi t Burst

N/A (In The For.atter)

Flail Skipping

N/A

MIA

Block Re-llrites

I
I

DRIVE
CHARACTERISTICS

i
I
I

(

VltEBUS
'=HARACTERISTICS
Support level

16/24/32 Bit Addressing A24/D16 (ltl, A16/DS (SI 32 Bit Datal Address

32 Bit Datai Address

Size of Buffer

64 Bit FIFO

MIA

Itinilul Interleave

1:1

NIA

MIA

PHYSICAL
CHARACTERISTICS

I
I

FOri Factor

Dual High Eurocard

POller Supply

+5V DC @3.0A Typ
-12V DC @O.SA Typ

+5V Dt> @3.0A Typ

+5V DC @6.0A Itax
-5V DC @O.6A Itax

+5V DC @5.0A Max

+1-12V DC @0.06A Typ

NOli

Now

NOli

DEI! Price (U.S.I/QTY $2,400/1'5

$1,450/1's

$2,695/1's

$1,79511'5

COl!I!ENTS

Also Supports SyQuest Supports Scatter/Gather Tri Density Tape Coupler
Relovable lIinchester and Calland
Up To 200 ips Speeds
Cipher's FloppyTape

Availability

(

Peripheral Concepts

PRODUCTS-SO

· - ..- - - - - - - - . - - - - - .

---

1
"

.,-

I'd

c::
n
8
en
I

.....

j
1

)
1
~

G
~

:::::!.
-C

::r
to

n
o

:::J
n
to
-C

....
'"

ere;

'nu

HANUFACl'URER

Adaptive Data Systems
Advanced Elec. Design
Advanced Storage Concepts
Ampro Computers, Inc.
Andromeda Systems
Archive Corporation
AVIV Corporation
BASU, Inc.
Bytronix Corporation
Centan Corporation
Central Data Corporation
Ciprico, Inc.
Comark Corporation
Computer Storage Te~nology
Data Technology Corp.
Data-Sud Systems
Distributed Logic Corp.
Di8tributed Proce8sing
Dual S,stellS
DY-4 S,8tell., Inc.
Electronic Modular
Baulex Corporation
Force Computers
FUjitsu America, Inc.
General Micro Systems
General Robotics
Hamilton Std. Dig. SY8tellS
Hitachi Ltd.
Integrated Solution8, Inc.
Intel Corporation
Interpha8e Corporation
Ironic 8 , Inc.
(onan Corporation

DEC

Other Htnt

!1ultlb~_

VHEbuB

lion
1
SASIISCSI.1I BH-PC/XTI AT.1 A4apta
.. -

LSt1

1
I

I
I

I
I
I

I
I

I
I
I

I
X

X
X
I

I
I
I

I
1

~
.-

HANUFAC'nJRER

o
~

:::l.

-0
::r
to

Dl
n
o
:::J

n
to
-0

I'tI
~

o
o

c:::
n
8

en
I

(X)

DEC

------

YMEbu8

Host
SASIIscsI* IBH-PC/IT/AT* Adapter*

LSI*

X
X
X
X

X
X

I
X

----

Multibus

Hacrolink. Inc.
HDB Systems
Micro Technology Inc.
Microproject Corporation
Mini Computer Technology
Mizar. Incorporated
Motorola, Inc.
National Semiconductor
NCR Corporation
NEe Electronics USA
PEP Modular Computer
Plessey Microsystems
Qualogy
Scientific Micro Systems
Sigen Corporation
Sigma Information Systems
Signetics Corporation
Spectra Logic Corporation
Standard Hicrosystems Corp.
Sunol Systems
Sysgen Corporstion
TD Systems, Inc.
Wangtek
Webster Computer Corp.
Wespercorp
Western Digital Corp.
Xebec Corporation
Xylogics
Zetaco, Incorporated
----

Other Mini

X
I

I
I

X
I
I

I
X

I
I

X
X
-

------

------- -

X
X

L-

*Controller Concepts Volume I

-------------------"

I..

s-.-

·s. . . .

'.'Ctr'·

rd-r-zSd'NsM

~t"

stet

•

$.~

1m1 ,.

'On

- 6

e.'.

.f"

"e;

HARUFACTURERS' PROFILES

Advanced Electronics Design, Inc.
440 Potrero Avenue
Sunnyvale, CA 94086
408-733-3555
AED offers multifunction and floppy controllers for DEC computers. The
company's primary business is color graphics systems •

•

Andromeda Systems
9000 Eton Avenue
Canoga Park, CA 91304
213-709-7600
Founded in 1976, Andromeda is a supplier of a range of add-on products
for DEC's microcomputers. Their controller offerings include
winchester and multifunction products, including the newly announced
controllers supporting the MSCP protocol.

Aviv Corporation
26 Cummings Park
Woburn, MA 01801
617-933-1165
Primarily a supplier of tri-density tape subsystems for minicomputers,
Aviv offers disk and tape controllers
for DEC, Data General and
,
Multibus systems.

BASU, Inc.
2025 Gateway Place
SUite 200
San Jose, CA 95110
408-998-2888

Subsidiary of a German company, Basu is a supplier of VME system
components, including floppy disk controllers.

MAN-1

Peripheral Concepts

J
"

(

Bytronix Corporation
2701 East Chapman
Fullerton, CA 92631
714-871-8763
The company offers Data General compatible disk and tape controllers.
Bytronix also supplies add-on memory and other products for Data
General computers.

Central Data Corporation
1602 Newton Drive
Champaign, IL 61820
217-359-8010
Founded in 1978, Central Data supplies a wide range of Mu1tibus
products, including floppy, tape and multifunction controllers. In
late 1984, the company acquired the entire Mu1tibus product line from
Advanced Micro Devices. Central Data is also expected to enter the
VMEbus market.

(

Ciprico Inc.
2955 Xenium Lane
Plymouth, MN 55441
612-559-2034
Founded in 1978 as Computer Products Corporation (CPC), Ciprico is the
leading supplier of Multibus tape controllers. The company also offers
multifunction controllers for the Mu1tibus and recently introduced
advanced SMD disk controllers.

Comark Corporation
93 West Street
Medfield, MA 02052
617-35-8161
Comark manufactures a line of Multibus compatible floppy and tape
controllers.

Computer Storage Technology
Division of E.F. Industries
12624 Daphne Avenue
Hawthorne, CA 90250
213-777-4070

MAN-2

Peripheral Concepts

CST is a supplier of tape controllers and subsystems for DEC, Data

( General and IBM computers. These products were originally acquired
from Datum Corporation.

Data-Sud Systems
2219 S. 48th Street, .Ste J
Tempe, AZ 85282
602-345·-0940
Data-Sud was one of the early entrants in the VMEbus market. The
company offers floppy and winchester controllers for the VMEbus.

Data Technology Corporation
2775 Northwestern Parkway
Santa Clara, CA 95051
408-496-0434
DTC supplies a broad range of peripheral controllers. In addition to
SCSI, which it co-invented, the company offers controllers for IBM-PC
and Multibus. Their Multibus product line includes winchester and
multifunction controllers.
..
~ ~

(
Distributed Logic Corporation
1555 S. Sinclair Street
Anaheim, CA 92806
714-937-5700
Founded in 1978, Dilog is the leading supplier of controllers for
DEC's Q-bus. The company is a supplier of captive controllers to DEC.
Di10g also offers controllers for DEC's Unibus •.

•

Dual Systems
2530 San Pablo Ave.
Berkeley, CA 94702
415-549-3854
Founded in 1979 as a computer system manufacturer, Dual Systems offers
winchester and tape controllers for the VMEbus. The company also
offers add-on products.for the S-100 bus.

MAN-3

Peripheral Concepts

.-~

(

DY-4 Systems Inc.
1475 S. Bascom Avenue
Campbell, CA
95008
408-377-9822
DY-4 is a Canadian supplier of a broad range of VME products. The
company's controller products include floppy, tape and winchester
controllers.

Electronic Modular Systems
4546 Beltway
Dallas, TX 75234
214-392-3473
EMS is a supplier of VMEbus products. The company has recently
introduced a winchester and a tape controller, both designed in
Germany-.

Emulex Corporation
3545 Harbor Blvd.
Costa Mesa, CA 92626
714-662-5600
(

Established in 1978, Emulex is the number one supplier of DEC
compatible controllers. Their product line includes "a variety of disk
and tape controllers and subsystems for DEC's Q-bus and Unibus. The
company also manufactures communications products for DEC and IBM-PC
computers. Emulex is a supplier of controllers and subsystems for the
SCSI bus.

Force Computers, Inc.
2041 Mission College
Ste. 150
Santa Clara, CA 95054
408-988-8686
Force is a leading supplier.of VMEbus products. Their controller
offering includes winchester and multifunction products. Although
headquartered in California, most of Force's products are designed and
produced in Germany.

(

MAN-4

Peripheral Concepts

(

General Micro Systems
4740 Brooks St.
Montclair, CA 91763
714-621-7532
GMS is a new entrant in the VMEbus controller market. The company
offers a multifunction controller.

General Robotics
57 North Main Street
Hartford, WI 53027
414-673-6800
Now in its eleventh year of operation, General Robotics supplies
controllers, subsystems and other add-ons for DEC's Q-bus. The company
has a stong overseas business.

Hamiltori Standard Digital Systems/United Technology
1215 West Crosby Road
Carrollton, Tl 75006
214-466-7329
Formerly a part of Mostek, HSDS offers a full line of VMEbus products.
The company markets a floppy and a winchester controller for the
VMEbus.

Integrated Solutions Inc.
2240 Lundy Ave.
San Jose, CA 95131
408-943-1902

Integrated Solutions is a systems manufacturer. The company offers two
tape controller products for the VMEbus.

Intel Corporation
5200 NE Elam Young Par~way
Hillsboro, OR 97123
503-640-7157
Intel is a leading manufacturer of semiconductors and the inventor of
Multibus. Its OEM modules division offers Multibus based hardware,
software and accessories. Their controller products include
winchester, floppy and multifunction controllers.

(
MAN-5

( ) Peripheral Concepts

(

Interphase
2925 Merrel Road
Dallas, TX 75229
214-350-9000
Incorporated in 1977, Interphase is a 1eading supplier of Multibus
controllers. The company has also entered the VMEbus controller market
with a tape and a disk controller that is being second sourced by two
other vendors. Interphase also offers controller and subsystem
products for the IBM-PC.

Ironies, Inc.
742 Cascadilla Street
Ithaca, NY 14850
607-277-4060
Ironies is a supplier of a range of products for the VMEbus including
a winchester disk controller.

(

Konan Corporation
1425 North 27th Avenue
Phoenix, AZ 85009
602-269-2649
Founded in 1978, Konan is a supplier of controller boards for the
Multibus, SCSI and IBM-PC markets.

Macrolink, Inc.
1150 E •. Stanford Ct.
Anaheim, CA 92805
714-634-8080
Macrolink is a supplier of add-on products for Perkin-Elmer computers.
The company is a leader in P-} compatible tape controllers and last
year introduced a disk controller.

MDB Systems
1995 N. Batavia Street
Orange, CA 92665
714-998-6900
Formed in 1970 as a systems supplier, MDB Systems now offers
controllers, interface modules and other hardware for DEC, Data

(

MAN-6
Peripheral Concepts

(

General, IBM Series/I, Multibus and Perkin-Elmer computers. Their
controller products are limited to DEC Q-bus/Unibus compatible disk
and tape controllers.

Micro Technology Inc.
1620 Miraloma Ave.
Placentia, CA 92670
213-544-7552
MTI manufactures controllers and subsystems for DEC's Q-bus. The
company is a leading supplier of floppy controllers and also offers
dual-wide winchester and tape controllers for the Q-bus.

M1croproject Corp
3 Malaga Cove Plaza
Palos Verdes Estates, CA
213-544-7552

90274

Microproject is the U.S. arm of the Dutch company Manudax. Their
controller products include disk and tape controllers for the VMEbus.

(

Mini Computer Technology
696 E. Trimble Road
San Jose, CA 95131
408-942-1616
Minicomputer Technology, a subsidiary of E-H International, is a
supplier of controllers for a variety of minicomputers including DEC,
Data General and Perkin-Elmer. The company has also entered the VMEbus
controller market with tape and multifunction controllers.

Mizar Inc.
302 Chester Street
St. Paul, MN 55107
612-224-8941
Mizar is a full line supplier of VMEbus products. Their controller
products include floppy and multifunction controllers.

MAN-7

( ) Peripheral Concepts

(

Motorola
2900 S. Diablo Way
Tempe, AZ 85282
602-438-3006
Primarily a semiconductor manufacturer, Motorola co-developed the
VMEbus. The company offers a wide range of VME products, and is the
leading supplier of peripheral controllers.

Plessey Peripheral Systems, Inc.
17312 Gillette Avenue
Irvine, CA 92714
714-540-9115
Plessey Peripherals is a supplier of DEC compatible controllers and
subsystems. The company recently announced several controllers
suppor~ing an architecture similar to the Digital Storage Architecture
from DEC.

(

Qualogy
2241 Lundy Avenue
San Jose, CA 95131
408-946-5800
Founded in 1974 as Data Systems Design, the company is a supplier of
controllers and a leader in subsystems for DEC's Q-bus. The company
entered the Multibus compatible controller market in 1982 and now
offers a line of multifunction ~ontrollers.

Scientific Micro Systems
339 N. Bernardo
Mt. View, CA 94048
415-964-5700
~

Primarily a supplier of subsystems for the DEC market, the company
also offers multifunction controllers for Q-bus, Unibus and Multibus.
With its acquisition of OMT) two years ago, SMS has become a leading
supplier of SCSI and IBM-PC compatible controllers.

Sigen Corporation
1800 Wyatt Drive Ste 6
Santa Clara, CA 95054
408-988-2527

o
•

MAN-8
Peripheral Concepts

(

Sigen was an early entrant into the VMEbus controller market. The
company licensed its products to other manufacturers and remained
inactive in the market last year. Sigen will once again market VMEbus
controllers this year.

Sigma Information Systems
6505C Serrano Avenue
Anaheim, CA 92807
714-632-0474
Sigma is a leading supplier of floppy disk controllers for DEC's
Q-bus. The company also offers winchester controllers and other Q-bus
compatible add-on products. Many of Sigma's products are licensed from
other manufacturers.

Signetics
811 E. Arques Avenue
Sunnyvale, CA 94086
408-739-7700

(

Signetics, primarily a semiconductor manufacturer, offers a
multifunction controller for the VMEbus. Signetics is part of the
Dutch conglomerate Philips.

Spectra Logic Corp
297 North Bernardo Ave.
Mt. View, Ca 94043
415-964-2211
Founded in 1979, Spectra Logic was acquired by Cipher Data Products
last year. The company offers per.ipheral controllers for DEC, Data
General, Perkin-Elmer and Texas Instruments minicomputers. Spectra is
a leader in multifunction controllers, particularly in the Data
General and Texas Instruments markets.
~

Webster Computer Corp.
333 Cobalt Way
Suite 106
Sunnyvale, CA 94086
408-749-1089
Webster is a supplier of dual-width controller boards for DEC's Q-bus.
Their current offerings include winchester and tape controllers.
MAN-9

<:) Peripheral Concepts

Webster has licensed its products to other companies in the DEC
compatible market.

Wespercorp
14511 New Myford Road
Tustin, CA 92680
714-730-6250
Founded in 1975 as Western Peripherals, the company offers disk, tape
and multifunction controllers for DEC, Data General, Perkin-Elmer and
Multibus computers. Wespercorp is a leading supplier of printer
controllers for minicomputers.

Xylogics
144 Middlesex Tpke.
Burlington, MA 01803
617-272-8140
Established in 1975, Xylogics is a leading supplier of Multibus
controllers. Their product line includes disk, tape and multifunction
controllers. This year, the company announced its support for
Multibus-II and also introduced peripheral controllers for the VMEbus.

(
Zetaco, Inc.
6850 Shady Oak Road
Eden Prairie, MN 55344
612-941-9480
Founded as Custom Systems in 1972, Zetaco is a leading supplier of
disk, tape and multifunction controllers for Data General and Texas
Instruments minicomputers.

I
I

(

MAN-10
Peripheral Concepts

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.3
Linearized                      : No
XMP Toolkit                     : Adobe XMP Core 4.2.1-c041 52.342996, 2008/05/07-21:37:19
Create Date                     : 2018:06:22 09:52:40-08:00
Modify Date                     : 2018:06:22 10:11:14-07:00
Metadata Date                   : 2018:06:22 10:11:14-07:00
Producer                        : Adobe Acrobat 9.0 Paper Capture Plug-in
Format                          : application/pdf
Document ID                     : uuid:ceee6683-3a91-e842-a9ee-59d684feb429
Instance ID                     : uuid:45feb6bb-a300-eb41-94bd-d195d63b0fb0
Page Layout                     : SinglePage
Page Mode                       : UseNone
Page Count                      : 192

EXIF Metadata provided by EXIF.tools

1985_Controller_Concepts_2 1985 Controller Concepts 2

Navigation menu

Versions of this User Manual:

Views

Navigation