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C13-641-101

Processors

Modular Computer Systems

Modcomp II and

IV

Communications Processors

The

Modcomp

IV

minicomputer system shown above represents the

largest member

of

the

Modcomp

computer family.

MANAGEMENT

SUMMARY

Modular

Computer

Systems (Modcomp), founded in

1970, manufactures computer products based

on

"macro-

modular" design architecture, achieving the goal of most

computer manufacturers.

The

term modularity, as applied

to

the Modcomp CPU's, means that all elements

of

the

processor-arithmetic logical unit,

I/O

control section, etc.,

are implemented in isolatable, asynchronous blocks, or

modules, which are largely independent of each other and

can be removed

and

replaced quite easily permit upgrading

without total redesign or extensive engineering changes.

Modcomp's major market areas are Manufacturing In-

dustries, Power Industries, Process Control and Energy

Management. They enjoy strong representation

in

Com-

munications applications such as

Front

Ends, Message

Switching

and

time sharing networks.

Modcomp offers a series of packaged computer systems

based on its Modcomp

II

and Modcomp

IV

computer

systems. This report discusses the communications pro-

cessors

of

this series, which include ROM with special-

ized communications macro routines.

The

modular hardware architecture allows for a variety of

asynchronous internal data transfer arrangements to

I:>

A

family

of

computer

systems

offering

exten-

sive

communications

handling

capabilities.

Each

system

can

support

up

to

256

full-

duplex

lines and

interface

with

either

CDC.

IBM.

or

other

Modcomp

computers.

The

MAXNET

system

enables

Modcomp

net-

works

to

be operated in a

distributed

data

processing

mode.

The

MAXCOM

Communi-

cations

Executive

is

the

basis

for

front

ending

and

message

switching.

A

full

complement

of

peripherals is

offered.

along

with

a

bulk

core

memory

system.

Memory+.

A

Modcomp

11/45/CP2

with

32K

bytes

of

800

nanosecond

core.

4-port

memory

inter-

face. a

32-line

Universal

Communications

Controller

with

asynchronous

Line

Inter-

faces. a parallel

link

to

another

Modcomp

system.

and a

12-megaword

disk

drive

can

be

purchased

for

$58.890;

the

monthly

maintenance

charge

is

$651.

CHARACTERISTICS

VENDOR: Modular Computer Systems,

1650

West McNab

Road, Fort Lauderdale, Florida 33309. Telephone (305)

974-

1380.

DATE

OF

FIRST ANNOUNCEMENT: Modcomp II,

October

1971;

Modcomp

IV,

June

1973.

DATE OF FIRST DELIVERY: Modcomp II, December

1972;

Modcomp IV, September

1974.

NliMBER

INSTALLED TO DATE: 3000 (all models).

SERVICED

BY:

Modular Computer Systems.

CONFIGURATION

Modcomp

otTers

four basic communications processor con-

figurations. Common to each system are a direct memory

interface, a communications ROM, and a control console.

The direct memory interface enables attachment

ofa

Univer-

sal Communications subsystem that

will

support up to

256

full-duplex communications lines. The communications

ROM provides storage for specialized communications

macro routines necessary for control

of

the lines.

The

1I/26jCP2

communications processor

is

based

0)1

the

Modcomp II, a 16-bit computer. Standard with this system

are 64K bytes

of

1.06 microsecond, parity core memory.

The 11/233 Communications System contains a 1I/26/CP2

with all

of

the

CPLI

options to support the MAX COM

software system, a

4903

PCI, and a Universal Communi-

cations Subsystem.

The

1I/45jCP2

communications processor

is

basically the

1I/26/CP2 with a four-port memory access interface with 800

nanosecond

cycle

time. The main processor and the

I/O

bus

are each assigned a memory access port. The two remaining

~

JANUARY

1980

©

1980

DATAPRO RESEARCH CORPORATION, DELRAN, NJ

08075

USA

REPRODUCTION PROHIBITED

C13-641-102

Processors Modular Computer Systems

Modcomp II and

IV

Communications Processors

1:> maximize throughput. Communications lines

and

mass

storage devices can be attached so that internal data

transfer

is

via either processor interrupt or direct memory

access.

For

communications lines, a special direct memory

access (Direct Memory Interface)

is

available that does

not have to contend with other devices for memory access

or

steal processor cycles. Alternatively, a low volume/

speed communications line can

be

attached

to

the Direct

Memory Processor along with other devices contending

for use

of

a

common

direct memory access port. A

memory interface option enables attachment of two out

of the four possible memory port accesses to favored

internal units such as the Direct Memory Processor.

For

a network

of

Modcomp systems, the company offers

MAXNET,

a network control system. This software

permits each computer system to operate

in

a distributed

data

processing mode.

The

applications programs without

effort, can freely employ the

I/O

resources resident any-

where

in

the network. In true distributed fashion, each

computer can trigger events and actions

in

other network

computers. Downline loading of programs

is

supported

along with remote initial program loading.

For

a dedicated communications application, Modcomp

offers

MAXCOM,

a specialized system executive. This

software

is

designed to minimize system overhead and

memory, and

is

optimized for high throughput applica-

tions.

It

contains as standard, handlers for IBM 2780/

3780

and

CDC

UT-200 Emulators.

When the Direct Memory Interface option

is

used for

communications lines, 256 lines can be physically at-

tached. This

is

practical from a throughput standpoint,

if each line accommodates line speeds up to

1800

bps.

However, if all the lines have to handle heavy traffic

operating in excess of 9600 bps for prolonged periods,

more

than

48

lines may cause too great a load on the

system.

The Memory+ System

is

an

I/O

feature not common

to

many other communications processors. Up to

16.8

megabytes

of

core inemory can

be

attached to one system

for use as a mass storage device. Memory+, offering a

cross between the advantages of extended memory and the

control of

an

I/O

handler, was developed jointly by

Modcomp and Dataram.

USER REACTION

In October 1979,

Datapro

interviewed three users of

Modcomp Communications Processors with a total offive

units in use. These users were selected at random from a

list provided by the vendor.

All

of the installations had

been operating for a period

of

two

to

five

years, and

in

all cases the Modcomp system was being used as a front-

end processor.

Four

of the five units were front-ending

CDC

hosts (6000, 6600, Cyber 76,

and

Cyber

170)

and

the fifth was front-ending

an

IBM 360.

The

users' ratings

are as follows: 1:>

~

ports can either

be

assigned to the main processor

or

to the

optional Direct Memory Processor (DMP). The

DMP

enables up to eight peripheral devices

to

have direct memory

access.

The

IV

/35/CP-8

system

is

based on the Modcomp

IV

/35-8,

a 32-bit computer system that can process data internally in

mUltiples

of

16

bits. Standard with this system are

128K

bytes

of

1.06

microsecond, interleaved, parity core memory with

four-port memory access. Interlea\'ing

of

memory modules.

produces an effective memory access rate

of

600 nanoseconds.

The Direct Memory Processor

is

standard with the

IV

/35/

CP-8

and enables up to

16

peripheral devices to have direct

memory access.

Peripheral

Controller

Interface

Each system has an

I/O

8us with the

capabilit~·

of

handling

eight electrical loads. Each electrical load

will

accommodate

attachment

of

either a

4903

or

a

4905

Peripheral Controller

Interf:lce. Either Peripheral Controller Interface supports

up

to four peripheral devices or communications controllers.

The 4905, additionally, includes a controller for attachment

of

a console. Each system can, therefore, physically support

up

to

32

communications

or

peripheral attachments, plus a

console. Optionally, a direct memory processor can

be

added

to the Modcomp

II

system to enable up to eight

of

the

attachments to transfer data via direct memory

acces.~.

This

feature

is

standard on the Modcomp

IV

system and enables

up to

16

attachments to enjoy direct memory access.

Asynchronous and synchronous interfaces are available for

direct attachment

of

communications lines to the Peripheral

Controller Interface. Data transfer for lines so attached

is

under main processor (interrupt) control. Each interface

supports two full-duplex lines.

A 128-line Asynchronous Multiplexer Controller can also

be

attached to the Peripheral Controller Interface. Cp to four

32-

line Asynchronous Multiplexers can

be

attached. Each

multiplexer requires a Line Interface for every two full-duplex

lines attached to the multiplexer. Data transfer for lines

attached

to

the multiplexer

is

on an interrupt basis.

Communications lines can have direct memory access for

data transfer via attachment

of

a Universal Communications

Controller to a Peripheral Controller Interface. This device

is

also attached to the Direct Memory Interface feature that

is

standard

in

each

of

the communications processor systems.

It

is

this feature that enables up to

256

communications lines

attached to the t:niversal Communications Controller to

transfer data to and from the memory without main processor

intervention. Universal Communications Chassis are re-

quired to house the Line Interfaces that are attached to the

Universal Communications Controller. The Chassis come

in

two versions, each accommodating interfaces for

32

lines.

One version has single port access, and the other has dual

port access.

Tl1e

latter version

is

used

in

redundant configura-

tions

to

attach the communications lines to another system.

Each Line Interface supports two full-duplex lines.

Adapters for attachment to Control Data, 18M, and other

Modcomp processors are offered for attachment to the

Peripheral Controller Interface.

Peripherals

Most peripheral devices are offered with an integral controller

for attachment to the Peripheral Controller Interface. Peri-

pheral devices include: printers with speeds up to

600

Ipm,

('

7 and 9-track magnetic tape drives, fixed head disk drives

with up to one-megaword capacity, movable head disk drives

with up to an 168-megabyte capacity, floppy disks with up to

300K words capacity, and bulk core storage units

of

up to 2

megabyte capacity. A 300-cpm

or

a

1000

cpm card reader and

a

100

cpm punch can

be

attached to the Peripheral Controller.

~

19

1980

DATAPRO RESEARCH CORPORATION, DELRAN, NJ

08075

USA

REPRODUCTION PROHIBITED JANUARY

1980

{ 1:>

(

C13-641-103

Processors

Modular

Computer

Systems

Modcomp

II and

IV

Communications

Processors

Excellent

Good

Fair

Poor

Wi\*

Overall satisfaction 0 3 0 0 3.0

Throughput

I 2 0 0 3.3

Hardware

reliability I 2 0 0 3.3

Promptness

of

maintenance

(J

1 I

(J

1.7

Quality

of

maintenance

(J

2 0 2.3

Technical

,upport

(J

2 0 2.3

*Weighted average

on

a scale

of

4.0 for Excellent.

No

major

difficulties were prevalent

among

the three sites

polled.

One

user mentioned that he had problems with the

system's modems and terminals, but said that these

problems were "nothing

out

of

the ordinary",

and

were

unrelated to the operation

of

the M

odcomp

processors.

The

ratings show a high degree

of

satisfaction with

throughput

and

hardware reliability. We were unable to

get three ratings on ease

of

installation and vendor

software so these factors arc excluded from the above

table. Three

is

the minimum

number

of

responses for

which

Datapro

will calculate a weighted average.D

CRT's can

be

attached to the system over communications

lines. The Hazeltine

1500

and 1510 are offered

b~

Modcomp.

Memory

The Modcomp II systems have either 32K bytes

of

800-

nanosecond core memory or 64K bytes

of

1.06 microsecond

core memory as standard. The 800-nanosecond memory can

be expanded in increments

of

8K or

16K

bytes. The 1.06

microsecond memory can be expanded

in

increments

of

64K

bytes. Maximum allowable memory on any

of

the Modcomp

II systems

is

128K bytes. Standard memory on the Modcomp

IV

is

128K bytes

of

1.06 microsecond memory. Expansion

is

in 128K byte increments up to 1024K bytes. The second

512K bytes requires a Memory Expansion Unit. The first

512K bytes and the second 512K bytes each have a four-port

interface. Two

of

the ports

on

each interface are available

for direct attachment to other computers.

CONNECTION

TO

HOST

COMPUTER

Adapters for local attachment

ofthe

Modcomp communica-

tions systems

to

host computers are available for Control

Data,

IBM, and other Modcomp computer systems. Mod-

comp

will

custom build adapters for other host computers.

The adapters are attached

to

the Peripheral Controller

Interface and, when direct memory access

is

required,

to

the

Direct Memory Processor.

The 4820 Parallel Computer Link

is

used

to

attach the

communications processor

to

another Modcomp system.

Parallel direct memory transfer

of

200K bytes per second

is

possible with systems spaced within 150 feet

of

each other.

A Serial Link

is

available between two Modcomp processors

with the 4824 feature. Serial transfer

is

over a pair

of

coaxial

cables with

data

rates varying according

to

cable length; a

rate

of

250K bytes per second

is

possible up

to

1000 feet,

62K bytes per second

at

up

to

2500 feet,

and

30K bytes per

second

at

up

to

5000 feet. Optional with the Serial Link

is

the

capability for one computer

to

initialize (IPL) the other

computer.

The 1941

Modcomp/CDC

Satellite

Coupler

supports

parallel transfer

of

data

between the

Modcomp

processor

and

a Control

Data

6000 or 3000 series computer system.

Either byte transfer through program interrupt or word

transfer through direct memory access

is

accommodated,

with the latter transferring data

at

speeds

of

up

to 600K

bytes per second. An optional feature enables a Control

Data processor

to

remotely load the

Modcomp

processor.

The 1950

Modcomp/IBM

360, 370 Interface supports attach-

ment

to

either an IBM selector channel

or

a block multi-

plexer channel. Direct memory transfer rates

of

up

to

250K bytes per second are possible and are limited

to

the

burst mode when attachment

is

to

the block multiplexer.

Up to

256

device addresses are supported. Optionally, the

IBM processor can initialize the Modcomp processor.

TRANSMISSION

SPECIFICATIONS

Three dual channel interfaces are offered for direct attach-

ment

to

one

of

the four slots

of

a Peripheral Controller

Interface. Each

of

the interfaces

will

support two full-

duplex communications lines. The 4810 Asynchronous Inter-

face

will

support two

20

milliampere current loops with

speeds between

75

and

9600

bps. The

4811

Asynchronous

Interface

will

support two lines with an RS-232C interface

at speeds between

75

and 9600 bps. The 4815 Synchronous

Interface

will

support two lines with an RS-232C interface

at

speeds between

110

and

20K

bps.

The attachment

of

the 1905 Asynchronous Multiplex Con-

troller

to

a Peripheral Controller slot enables multiple 32-line

Multiplexers (1910) to be attached

to

the Multiplexer Con-

troller for support

of

up

to

128

lines. Line Interfaces for

the Multiplexer are offered

to

support either RS-232C or

20

rnA current loop interfaces. Each Line Interface accom-

modates two lines. The lines can operate

at

speeds between

75

and 9600 bps.

Data

transfer between the lines

and

memory for all

of

the

above attachments

is

under processor interrupt control.

Direct memory transfers,

to

support a greater number

of

communications lines and

to

operate lines

at

speeds in

excess

of

9600 bps,

is

available with the Universal Com-

munications subsystem. This device attaches to a slot

of

the

Peripheral Controller and

to

the Direct Memory Interface.

The Controller

is

offered in several versions

to

support

32,

64,

128,

192,

and

256 lines.

The Line Interfaces necessary for the supported lines require

a 32-port Universal Communications Chassis for mounting.

One asynchronous interface supports RS-232C

and

another

supports either a 20 rnA

or

a 60 rnA current loop. Asyn-

chronous line speeds can be between 75

and

19.2K bps.

Synchronous interfaces are available in either byte mode

for use with BSC like protocols

or

bit mode for use with

HDLC

like protocols. Both types are available in three

models;

(I)

RS-232-C,

(2)

Bell 301/303,

and

(3)

CCITT

V.35 interfaces.

SOFTWARE

The Modular Application Executive

(MAX)

operating sys-

tem provides three levels

of

system support:

MA

X II,

MAX

III,

and

MAX IV.

MAX

II

and

MAX

III are compatible operating systems for

the Modcomp II computers;

MAX

III

is

a superset

of

MAX

II. They share common executive services, peripheral

handlers,

and

software.

MAX

/I

is designed for batch processing with limited real-

time requirements.

It

is a multiprogramming system

that

can

execute multiple core-resident tasks concurrently with one

batch

job

stream.

MAX

II

is

available in a core version

and

a batch version. The core version includes a taskmaster

which allocates time slices

to

any number

of

core-resident

tasks.

It

supports up to

256

unique execution priority levels.

The batch version supports both moving-head

and

fixed-

head discs

and

magnetic tape.

~

JANUARY

1980

,p

1980

DATAPRO RESEARCH CORPORATION, DELRAN, NJ

08075

USA

REPRODUCTION PROHIBITED

C13-641-104

Processors

Modular

Computer

Systems

Modcomp

II and

IV

Communications

Processors

~

The MAX

II

core version includes re-entrant floating-point

simulation and re-entrant FORTRAN

IV

run-time pack-

ages; re-entrant executive services for

I/O

operations; execu-

tion control, byte string syntax analysis, code conversions,

and utilities; and a device-independent

I/O

system. The

batch version adds nonresident background and batch pro-

cessing services to the real-time services

of

the core version.

MAX

III

is

a real-time multiprogramming system with

foreground/middleground/background

capabilities.

It

is

task-oriented and can have any number

of

tasks active

in

up to

256

priority levels.

MAX III exists

in

three versions: a core version, a batch

version, and an extended version. The core version executes

resident foreground tasks contained entirely within fixed

areas

of

memory.

It

also includes a clock-driven CPU

control executive, re-entrant executive services, queued

I/O

services that can

be

performed concurrently with task execu-

tion or with the calling task suspended, an off-line system

generation program for configuring the resident elements

and tasks of the system, and services for allocation

of

core

not used

by

resident elements. Also included

in

the core

version are a real-time clock for maintaining the time-of-

day, timing task delays, and updating system watchdog

timers; an option allowing the execution

of

more than one

task at each priority level, and a feature allowing important

or frequently used library subroutines to

be

declared resident

at system generation time. Re-entrant library subroutines,

memory tables,

and

variables may be made global. The

system generation package permits generation

of

large core-

resident systems

in

smatl core configurations.

The batch version

of

MAX III

is

a foreground/background

system which .adds the capabilities

of

a full-service loader

for overlay programs catalogued on either sequential

or

direct-access devices. An optional background task may

be

added which uses a nonresident

job

control overlay to

control batch processing operations. This version does not

contain middleground or batch check pointing capabilities.

The extended version

of

MAX III provides a full foreground/

middleground/background system, which permits establish-

ment

of

one or more core pools for foregroun(l and

middleground execution. Core

is

dynamically allocated

to

each task on a priority basis. The extended version also

permits one or more background areas to support batch

proces.~ing.

These areas can

be

stored

on

a disk when higher-

priority nonresident foreground programs require the mem-

ory space. The system allows background and middleground

core area sizes

to

be changed

by

the operator, spooling

of

low-speed printing devices, and multiple-user BASIC

which can

be

executed as either a foreground/middleground

task or as a background overlay. Active tasks can request

additional core blocks for use at run time. These blocks are

automatically deallocated.

Foreground, middleground, and background tasks may

be

either privileged or unprivileged. The unprivileged mode

is

the user mode, where the task has absolute control within its

own memory boundaries only. Round-robin task scheduling

is

an optional feature, allowing all tasks

of

equal priority

to

have their execution times shared

on

a cyclic basis.

MAX

IV

is

a disk-oriented, real-time, commimications-

oriented multiprogramming system specifically designed for

medium-to-Iarge Modcomp IV systems. The operating sys-

tern utilizes

the

Modcomp

IV

hardware relocation capabili-

ties,

map

protection,

memory

alloc.ation/deallocation

instructions, multiple register sets, and multiported mem-

ories to reduce system overhead. In addition to most

of

the

capabilities ·of

MAX

III, including a clock-driven

CPU

executive, MAX

IV

offers

256

task priority levels with the

capability to execute multiple tasks at each level; re-entrant

executive services for execution control, byte .string syntax

analysis, and code conversion; dynamic allocation

of

system

resources; assigning privileged and unprivileged status to

tasks; and the option

of

core residency

or

disk residency

for tasks, if memory

is

to be conserved.

The basic executive services and functional capabilities

of

MAX

II

and HI are included

in

MAX

IV

as a subset. Tasks

and overlays developed under MAX II or III

will

operate

normally under MAX

IV

provided·that the interface

to

the

operating system

is

via Modcomp macro calls, executive

services, or standard FORTRAN call subroutines.

The MAX

IV

operating system generally makes more

efficient use

of

disk-storage than MAX III, permitting such

additional functions as rollin/rollout

of

tasks between core

and disk

as

priorities dictate. MAX

IV

also has the same

re-entrant

FORTRAN

run-time package

and

output spool-

ing capabilities as MAX III.

A

file

manager system

is

available

as

an

extension to the

MAX

IV

operating system which can

be

used

by

any task

concurrently with MAX IV's basic

I/O

system. The

file

manager organizes, maintains, and services multi-level

files

in

any size and number. Nesting

of

named data

files

and

file

directories

to

any

level

while maintaining

file

security at

each level

is

permitted. Up to four levels

of

volume and

file

access protection are provided using locks and keys. Both

volume and

file

disposition functions based on user expira-

tion dates are available. Volume and

file

access are device-

independent. The

file

manager provides both direct ·and

sequential access methods, as

well

as the ability for the user

to

develop his own access method through the MAX

IV

basic

I/O

system. File names may be

of

variable length,

controlled

by

the user. File space may

be

contiguous or

noncontiguous and

is

automatically allocated and deallo-

cated.

The

FORTRAN

1/0

Run-Time Package

is

written in a

re-entrant format, allowing a single copy

to

be

shared

by

all programs.

A comprehensive diagnostic capability provides assistance

in

the form

of

error printouts indicating the types and number

of

errors that exist

in

any line

of

coding.

The Modcomp

BASIC

interpreter supports an extended set

of

the elementary capabilities defined

by

the Dartmouth

specification. A user can prepare and then CALL a set

of

subroutines which perform special real-time functions useful

to

him. The CALL statement enables BASIC to

be

used to

conduct interactive, on-line experiments. In applications

such as factory testing, test procedures for

new

devices to

be

tested

by

the system can

be

developed and checked out

in

an

on-line interactive mode

by

the test engineer.

MAXCOM

is

a demand-driven operating system for dedi-

cated communications applications.

It

does not support

background system processors. MAX COM can support up

to 256 tasks, each with a separate priority

level.

Drivers

are included for TTY, IBM Bisync, and CDC

200

UT

terminals as

well

as

for CDC 6000 and IBM 360/370

host processors. The operating system provides queued

I/O

services with the option

of

immediate return to interrupted

tasks, deferred return to interrupted tasks,

or

no return.

System generation

is

accomplished through the Modcomp

macro assembler

or

the

CDC

and IBM cross assembJers.

Generally, MAXCOM offers all the features

of

MAX

II

plus the enhancements gained through the addition

of

the

communication macros to any Modcomp II CPU. The

minimum configuration needed

to

run MAXCOM

is

any

Modcomp I1/CP processor with

8K

words

of

core. To

generate MAXCOM, however, a minimum

of

16K

words

is

required.

~

©

1980

DATAPRO RESEARCH CORPORATION, DELRAN,

NJ

08075

USA

REPRODUCTION

PROHIB.ITED

JANUARY

1980

(

C13-641-105

Processors

Modular

Computer

Systems

Modcomp

II and

IV

Communications

Processors

~

MAXNET

III

is

an operating system that permits linking

multiple Modcomp

II

or

IV

processors to form a distributed

network which operates an integrated

system_

Each system

in

the network has

all

the capabilities

of

the extended

version

of

MAX III plus the capabilities

of

the designated

host system to exercise control over all satellite systems.

In addition to handling the protocol, error checking and

retries, MAXNET provides the following capabilities:

• Downline program loading

of

satellite computers

hy

the

Modcomp host.

• Initial program loading, or initialization,

of

remote satel-

lites by the host.

• Control

of

one computer's tasks

by

another computer

in the network.

• Selective use

of

local

or

remote peripherals

by

applications

programs.

The internal MAXNET protocol

is

Modcomp designed,

based on BSC protocol.

There are

five

specialized tasks to support network opera-

tions. These are the link task to interface the

I/O

system

and allow device-independent

I/O

transfers through the

network; a loader task for transferring other tasks from the

host system disk to a satellite system; a linking loader

that

is

specifically designed for network applications and

will

receive binary inputs from the host system, perform

checksum validity checks, and request a predetermined

number

of

retries under error conditions; and a software

buffer management package which permits establishment

of

buffers in other systems' global or common areas.

The configuration needed for a MAXNET III host system

is

a Modcomp

II

or

IV

with I2SK bytes

of

memory and all

peripherals required

by

MAX III, extended version. Satellite

systems require

4SK

bytes

of

memory

as

a minimum and

any Modcomp communications interface

to

the host system.

MAXNET

IV

is

a superset

of

MAX

IV

with all

of

its

real-time mUltiprogramming capabilities and provision for

communicating with MAXNET III. The MAXNET

IV

host system requires a Modcomp

IV

processor with

256K

bytes

of

memory and the peripherals required b) MAX IV.

A satellite MAXNET

IV

system requires I2SK bytes

of

memory.

The

CDC

2()0

User

Terminal Emulator provides a means

for either a Modcomp

II

or

IV

to communicate with a

remote Control Data 6000

or

7000 Series computer. The

emulator operates under MAX II, III,

or

IV

performing

its task concurrently with other real-time

or

background

tasks. The features

of

the

CDC

200

lJser Terminal pro-

vided

by

the emulator include interleaved

]/0

transmissions,

switched

or

dedicated point-to-point operation at

2000

to

9600 bps, space and zero character compression, external

BCD transmission code, ANSI

or

IBM

26

punched card

input codes, and

full

double-buffering. Input may

be

from

cards, disk,

or

magnetic tape; output may

be

to printer,

disk, magnetic tape,

or

spooler.

The emulator requires a Modcomp processor with at least

7K

words above the resident systems

or

tasks; one duplex

channel

of

a

4S15

Interface; an appropriate dial or dedicated

communications line and

Bell

20lA, 20lB,

20S,

or

209-type

modem; and access to a

CDC

6000

or

7000 Series computer

operating under Export/Import, Cybernet, etc.

The

IBM

2780/3780 Terminal Emulator enables a Mod-

comp

II

or

IV

to

communicate with a remote IBM System/

360

or 370 computer. The emulator operates under MAX

II

or III as either a foreground or background

ta~k.

Provided

with the emulator are these features

of

the IBM 27S0/37S0;

multiple record transmission, horizontal format control,

EBCDIC transmission code, transparent text transmission,

37S0

space compression, extended ENQ

or

error retry,

, variable-length records, and switched or dedicated point-to-

point operation at

2000

to

9600

bps. Input may be from

cards, disk,

or

magnetic tape; output may be to printer,

disk, magnetic tape, punched cards, or spooler. The emulator

may

be

non-resident and can perform its operations with

other batch

or

foreground tasks.

Minimum requirements for operation

of

the emulator in-

clude a Modcomp processor with 5 to

SK

words

of

memory

ahove the resident tasks or systems; other requirements

specified for the CDC

200

lJser Terminal Emulator above;

and access to an IBM 360 or 370 computer under OS/VS,

OS/HASP,

DOS/VS, DOS/Power, etc.

The

IBM

HASP

Workstation Terminal Emulator oper-

ates under MAX III or

IV

on either a Modcomp

II

or

IV

with

8K

to

10K

words

of

memory above the resident tasks

or systems. Additional requirements include a duplex channel

of

a

4S15

Interface; a dial or dedicated communications

line, a

Bell

20lA, 20lB,

20S,

or

209-type communications

modem; and access to an IBM

360

or 370 computer under

OS/VS,

OS/HASP,

or

OS/

ASP.

The

HASP

emulator includes these features

of

the work-

station: multi-leaved

I/O

transmission,

EBCDIC

trans-

mission code, transparent

or

nontransparent transmission,

space and duplicate character transmission, switched or

dedicated point-to-point operation at 2000 to 9600 bps;

file

insertion; input from punched cards. disk, or magnetic

tape; and output to punched cards, disk, magnetic tape

or

printer. The emulator may be non-resident and can operate

with other batch or real-time tasks.

LANGlJAGES: For the

Modcomp"

or

IV, a

4K

assembler

or

16K

macro assembler (6K resident requirement) are

available, as

is

a FORTRAN-coded cross assembler for

use

on an IBM System/360 or 370 (DOS, 65KB)

or

a Control

Data 6000 Series system. Also available for the Modcomp

"

or

IV

are ANS FORTRAN

IV

and

an

extended BASIC.

The Assembler operates

in

two-pass fashion and requires a

minimum batch processing area

of

8K

bytes, which can

handle up to

200

symbol names. With additional available

memory, the symbol table can

be

expanded at the rate

of

one symbol for every three words

of

memory.

Featured

in

the Assembler are both absolute and relocatable

object format; free-field assembly format; a set

of

directives

for aiding

in

expressing constants, allocating storage, inter-

program communications, and listed output formatting;

error diagnostics; an object listing including source and object

code; symbolic addressing; the ability to define

new

instruc-

tions implemented

in

the ROM controller; and the capability

to accept symbolic constants both as operands

in

an im-

mediate instruction and in data statements.

The Macro Assembler

is

a free-format language processor

that contains all

of

the assembler capabilities, plus additional

features which include the generation

of

nested macros,

recursive macro calls, assembly-time branches

and

macro

exits.

The Macro Assembler

is

a two-pass processor that generates

relocatable and absolute object format

and

requires a min-

imum batch processing area

of

24K

bytes. This language

processor contains directives which allow the definition

of

macro prototypes, conditional assembly, custom hardware

macros,symbol definition, plus local

and

global label pro- _

cessing. The user can define

COMMON

blocks for com-

~

JANUARY

1980

cg

1980

DATAPRO RESEARCH CORPORATION, DELRAN, NJ

08075

USA

REPRODUCTION PROHIBITED

C13-641-106

Processors

Modular

Computer

Systems

Modcomp

II and

IV

Communications

Processors

~

munication between

FORTRAN

and assembly-language

programs and subroutines.

The Modcomp

FORTRAN

IV

compiler meets the specifi-

cations

of

the American National Standards Institute (X.39,

1966). Real-time extensions are provided which make FOR-

TRAN a useful data acquisition and control language.

Modcomp

FORTRAN

IV

is

designed to produce efficient

code through subscript optimization, block-level optimiza-

tion, and the utilization

of

all Modcomp

II

or

Modcomp

IV

machine capabilities, such as

all

general registers and the

full instruction set.

Direct-access

I/O

to disk files

is

provided through DEFINE

FI LE statements. A

file

manager provides the utility func-

tions for the creation and deletion

of

disk

files

to be used

with the

FORTRAN

direct access

I/O

system.

READ

and

WRITE

may be free-format.

The programmer using the Modcomp

FORTRAN

IV

com-

piler can write source code incorporating in-line assembly-

language coding, including macro directives. The user can

also call

all

the MAX executive services through in-line

assembly-language coding for maximum run-time efficiency.

A set

of

CALL subroutines which are compatible with ISA

Standard

61.1

has been added to the MAX

IV

System

Library. They provide real-time capabilities for execution

control

of

real-time

ta.~ks,

status testing, and interrupt

utilization. Array extensions provide the user with the free-

dom to use any arithmetic expression as an array subscript.

Arithmetic capabilities include 16-bit and 32-bit (Modcomp

IV) integers, plus 32-, 48-,

and

64-bit

(Modcomp

IV)

floating-point operations.

The

Modcomp

floating-point

hardware unit

is

fully supported

by

the compiler.

The

FORTRAN

I/O

Run-Time Package

is

written in a

re-entrant format, allowing a single copy

to

be shared

by

all programs.

A comprehensive diagnostic capability provides assistance

in

the form

of

error printouts indicating the types and number

of

errors that exist in any line

of

coding.

The Modcomp

BASIC

interpreter supports an extended set

of

the elementary capabilities defined

by

the Dartmouth

specification. A user can prepare and then CALL a set

of

subroutines which perform special real-time functions useful

to him. The CALL statement enables BASIC to be used to

conduct interactive, on-line experiements. In applications

such as factory testing, test procedures for new devices to

be

tested

by

the system can be developed and checked out

in

an

on-line interactive mode

by

the test engineer.

UTILITIES: Modcomp provides a set

of

functions to

maintain source, object, and load modules on disk storage;

a

file

maintenance processor for files processed

by

the

file

manager; a direct-access maintenance processor for

FORTRAN-defined direct access

data

files; and a

sort/

merge routine with a standard control language.

PERIPHERALS

Three fixed-head disk models, the 4103-1, 4104-1,

and

4106-

1, respectively provide storage capacities

of

262,144 words

(524,288 bytes), 524,288 words (1,048,576 bytes), and

1,048,576 words (2,097,152 bytes). Each disk drive has its

own

controller

and

contains 64, 128,

or

256 tracks, 32 sectors

per track,

and

128 16-bit words per sector. Average rotational

delay

is

8.7 milliseconds,

and

the

data

transfer rate is 512K

bytes (256K words) per second. The 4100 Series disk drives

are manufactured

by

Digital Development Corp.

Models 4126/4127 cartridge disk units provide removable-

cartridge storage for

up

to

1,299,200 16-bit words (2,598,

400 bytes), while Models 4128/4129 provide storage for up to

2,598,400 16-bit words (5,196,800 bytes). Model 4126 consists

of

a controller for one to four drives

and

one 4127 drive. Model

4127

is

the add-on drive for the 4126 subsystem. Model

4128

includes a controller for

up

to

two drives; each drive includes

two

disk cartridges (IBM 1315-type), one

of

which

is

re-

movable. Model 4129

iI

dual-cartridge add-on for Model

4128. Both units attach

to

the processor via the direct

memory processor

(DMP)

channel,

and

the controller inter-

face requires two slots in the peripheral controller interface.

Write lockout

is

provided

to

insure track protection. Both

models store data with 100 words per sector, 32 sectors per

track,

and

200 tracks plus 3 spares per surface. There are a

total

of

406 tracks

on

the 4126/4127

and

812 tracks

on

the

4128/4129.

Data

transfer rate

is

97,800 words per second,

and

average access time

is

90

milliseconds (including a 20-

millisecond average rotational delay).

Head

positioning time

is

15 milliseconds track-to-track

and

135 milliseconds across

all tracks. The drives rotate

at

1500 rpm. The 4120 Series

drives are manufactured by Diablo (Models

31

and

33).

The

4136 moving-head disk subsystem consists

of

a controller

and

up

to

four disk drives, providing a total

of

up

to

20

megawords

(40

megabytes)

of

storage. The Model

4136

is

the

master drive

and

is

provided with the controller. The Model

4137

iI

the add-on drive. The 4136

and

4137 each provide

5,013,504 words (10,027,008 bytes)

offormatted

storage. The

subsystem connects

to

the processor by means

of

a direct

memory processor channel

and

occupies two slots

on

the

peripheral controller interface.

Data

is

stored

at

2200 bpi

on

the disk packs, which have 4 tracks per cylinder, 24 sectors

per track, and 128 words per sector. There are 408 cylinders

per pack. The drives have an average rotational delay

of

12.5

milliseconds. Track-to-track, average,

and

across-all-tracks

head movement times are 10, 35,

and

70

milliseconds,

respectively.

Data

transfer rate is 156.25K words (312.5K

bytes) per second. The drives are rack-mountable

and

require

8~

inches

of

vertical height. The 4136/4137 drives are manu-

factured by Wangco (Model T 2222).

There are eight models

of

the 4138 disk drives

(IBM

3330-

type) offered: 4138-1 through 4138-8. The 4138-1 includes one

41,981,184-word (83,962,368-byte) disk drive

and

a controller

for

up

to

four drives. Model 4138-2

iI

the add-on disk drive.

Models 4138-3 and -4 includes a dual-port adapter which

permits two controllers

to

access one drive. Each disk drive

that

is

to

be "dual-accessed" must have the dual-port adapter.

The 4138-3 includes one 4138-2 disk drive, dual-port adapter,

and

two disk controllers. The 4138-4 includes one 4138-2 disk

drive and the dual-port adapter. The 4138-5

is

the double-

density version

of

the

4138-1

and includes one 83,962,368-

word (167,924,656-byte) disk drive

and

a controller for

up

to

four drives. The 4138-6, 4138-7,

and

4138-8 are the double-

density versions

of

the 4138-2, 4138-3, and 4138-4, respec-

tively.

The

4138 disks have either 404 cylinders plus 7 spares, or,

in the double-clensity version, 808 cylinders plus 7 spares;

19 tracks per cylinder;

and

5,376 words (10,752 bytes) per

track. Physical layout specifications for the 4138 include

128 words (256 bytes) per sector,

42

sectors per track,

and

102,114 words (204,228 bytes)

per

cylinder. Also included

in the 4138 subsystems

are

features such as error checking

on

an

individual sector basis, overlapped seeks for two

to

four drives,

and

buffering

of

a full track

of

data. Average

head positioning time

is

28 milliseconds, and average rota-

tional delay

is

8.35 milliseconds.Track-to-track

and

across-

all-tracks head movement times are 10 milliseconds

and

55

milliseconds, respectively. The 4138 controller occupies four

slots in the peripheral controller interface. The 4138 disk

drives are supplied by Ampex (Models 9100

and

9200).

Two

floppy disk models

are

offered. Model

4521

includes a

sin21e

floppy disk drive

and

a controller;

Model

4522 includes

~

©

1980

DATAPRO RESEARCH CORPORATION, DELRAN, NJ

08075

USA

REPRODUCTION PROHIBITED

JANUARY

1980

C13-641-107

Processors

Modular

Computer

Systems

Modcomp

II and

IV

Communications

Processors

dual floppy disk drives and controller. The controller can

support up

to

two drives and connects to the direct memory

processor through one slot

in

the peripheral controller inter-

face.

The drive automatically unloads the heads

600

milli-

seconds after each transaction

to

minimize disk surface wear.

Storage capacity

is

157,696

words (315,392 bytes) per drive,

with

128

words

(256

bytes) per sector,

16

sectors per track,

and

77

tracks per drive. Average rotational

delay

is

83.3

milliseconds with a disk rotational speed

of

360 rpm, and

average seek time over

28

tracks

is

290

milliseconds. Track-

to-track head positioning time and head settling time after

the last step are both

10

milliseconds. Head load time

is

80

milliseconds. The 4521/4522 floppy disk drives have a data

transfer rate

of

157,696

words (315,392 bytes) per second

and are manufactured

by

Shugart.

The

4190

Memory+ System

is

a bulk core memory system

designed to replace head-per-track swapping disks

in

high-

performance systems. The bulk core subsystem operates

as

an

I/O

device and can accommodate up to 4 million bytes

in

16

256K-byte increments. Addressing

is

organized into tracks

and sectors, and Memory+ controller commands are the same

as those issued

to

a head-per-track controller. One significant

exception, however,

is

that Memory+ permits data transfers

of

as little

as

one word.

There are

128

words

(256

bytes) per sector,

32

sectors or

4096

words

(8192

bytes) per track,

32

tracks

or

131,072

words (262,144 bytes) per module, 8 or 1,048,576 words

(2,097,152 bytes) per

file,

2

files

or 2,097,152 words (4,194,304

bytes) per

4190,

and up

to

four

4190's

per CPU. Each

Memory bulk core module

is

a continuous

128K

by

18-bit

array that

is

folded around the four surfaces

of

two printed

circuit boards. The two boards are hinged together for

easy

access

to

any core area.

Each

file

can have its own dual-access interface,

which

permits the addition

of

a second device controller, allowing

overlapped

file

access within a single-CPU system or shared

access from another CPU. A self-test capability

is

present

in

each

file,

allowing either

file

in

the Memory+ system

to be taken off-line for testing

or

repair.

The controller operation

is

comparable to that

of

Mod-

comp's peripheral fixed-head disk systems, but there are

significant performance differences. Access to a Memory+

device can occur within 1 microsecond following service

initiation, and data can be transferred at rates

of

3 to 4

megabytes per second using currently available Modcomp

IV

models. Should a main memory port be unavailable, data

will

be transferred

via

the

I/O

bus at its normal rate. Data

buffering

is

not required since there are no overflow implica-

tions

in

the core memory modules.

The controller utilizes standard virtual-mode addressing for

management

of

data transfers between Modcomp

IV

main

memory and Memory+. Standard Modcomp II and

IV

main

memory protect features are also implemented.

With two controllers connected

to

a single

file,

dual access

to

that group

of

up

to eight core modules

is

time-shared.

When two controllers are connected

to

two

files,

however,

one controller may access one

fde

while the other controller

accesses the other

file.

Either controller can lock out the

other form accessing either

file.

The

4190

has a data transfer rate

of

1.32

to

4.58

megabytes

per second, average.

Up

to four-way block address inter-

leaving using more than one 256K-byte module

yields

a

transfer rate

of

3.7 million bytes per second. Cycle time

for the bulk core memory

is

1500

nanoseconds, with an

access time

of

600

nanoseconds.

PRICING

Modcomp systems are available on a purchase-only basis,

with

separately priced maintenance and software.

Delivery

is

made FOB Modcomp's plant. The warranty

period

is

90

days after delivery. Modcomp provides one-

time, no-charge, on-site installation at the purchaser's loca-

tion within the contiguous United States.

If

a system

is

purchased with software, an additional

5300

software service

charge

is

billed, which includes delivery

of

the operating

system (either Max II, III, or IV), support software (system

languages)

in

object

or

load module form, and one set

of

software documentation. Additional copies

of

the software

are available at prices specified

in

the equipment price list.

Software

is

supplied only with systems that have at least

one disk drive or magnetic tape unit! disk drive combination.

Software

is

always provided on the least costly medium that

is

compatible with the system configuration. Diagnostics

and utilities are provided at no charge.

Modcomp provides software training for users with a

basic knowledge of programming and maintenance training

for those with at least two years

of

related technical training.

Training courses are provided at the customer's site for a

minimum

of

10

students on a prearranged basis. Charges

include

52000

for the

fIrSt

week and

51500

for week two

or three, plus

560

per diem portal to portal and one round-

trip economy air fare. Currently offered are

12

software

courses varying

in

length from two days to two

weeks

and

21

maintenance courses varying

in

length from one to three

weeks.

Full-service maintenance

is

provided under one

of

four

plans. VIP service guarantees a response time

of

eight

hours or

less

during prime time. Prime Time

is

defmed

as

8 a.m. to 5 p.m. Monday through Friday excluding Mod-

comp holidays. The VIP service also includes

12

preventive

maintenance

calIs

per year on a monthly schedule, unlimited

remedial maintenance

calIs,

six

months

to

one year duration

of

contract with a 30-day termination clause after the initial

six-month period, and no travel expenses

if

the customer

is

within a 50-mile radius of the service center. The maintenance

rates quoted

in

the price tables are for VIP service.

Real-time service

is

a variation

of

VIP service offering

four-hour response time. This service

is

billed

at

1.25

times the rate

of

VIP service.

IP

service

is

another variation

of

VIP service that offers

the same features but without a guarantee

as

to response

time. Pricing

is

available on a special-quote basis.

Extended service offers coverages which can range from a

guaranteed two-hour response time up to and including

coverage

24

hours a day, 7 days a week. Rates for this

service are

on

a special-quote basis. A customer may not

mix types

of

service within a single system configuration.

~

JANUARY

1980

©

1980

DATAPRO RESEARCH CORPORATION. DELRAN, NJ

08075

USA

REPRODUCTION PROHIBITED

C13-641-108

'Processors

Modular

Computer

Systems

Modcomp

II

and

IV

Communications

Processors

Configuration

Modcomp

II

or

IV

Computer

System

CPU

and

Memory

11126/CP2

1I/45/CP2

IV/35/CP-3

3608

3609

3670

3646-8

3675

4905

4903

3704

1 1

1

1

Console

Controller

1-

- - - - - - - - -

E I

'"

~

1

-a~

1-

- - - - - - -

--

'C

0

£f

E I

~8

----------

.r

1

1----------

I

1

r---I----------

-Console

1

I

: Up

to

4

I

Communications

1

or

peripheral

1 attachments

I

1

I

Up

to

8 Peripheral

Controller Interfaces

1

r-,-----

E

'"

~

.s:::

'"

0.=

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'"

~

a..E

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OU

~

Processors

I

r---------

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I

,----------

I

,

,--

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,

I

1

I

1 Up

to

4

1 Communications

1

or

peripherc.·1

1

attachments

I

Communications Processor, including Direct

Memory

Interface for

Universal Communications subsystem,

communications

macros

routines in ROM, and control

console-

Modcomp

II

CPU,

1.06-microsecond parity core memory;

64K bytes

Modcomp

II

CPU;

800-nanosecond parity core memory,

32K bytes, 4-port

memory

Modcomp

IV/35-B

CPU;

1.06 microsecond parity core

memory,

128K bytes, Direct

Memory

Processor,

4-port

memory

Memory

8K words of aOO-nanosecond core

for

11/25,

45

16K words of aOO-nanosecond core

for

11125,

45

32K

words

of 1.06 microsecond core

for

11/26

Memory

Expansion Unit

for

IV/35

for

512K

bytes, includes

4-port interface

128K bytes

1.06

microsecond

memory

Peripheral

Controller

Interface

Peripheral Controller Interface

with

375X

Controller

for

console

Peripheral Controller Interface

Direct

Memory

Processor

8-channel DMP

Up to 32 Communications

or

peripheral

attachments plus console

One

1907

Universal Communications

Controller is attachable to one slot

of a peripheral controller and

to

the

Direct

Memory

Interface. The

1907

supports

up

to

256

full-duplex lines.

Direct

Memory

Processor

permits

DMA

r

for

up

to

16

peripheral

attachments

on Modcomp IV system

and

up

to

8

on

Modcomp

II

system.

Monthly

Purchase

Maint,

21,650

25a

24,250

185

55.400

360

4,330

30

6,700

33

8,250

45

9,aOO

50

17,950

90

2,580

10

2,060

6

1,550

a

~

(c;)

1980

DATAPRO RESEARCH CORPORATION, DELRAN,

NJ

08075

USA

REPRODUCTION PROHIBITED JANUARY

1980

(

..

(

(-

JANUARY

1980

-----------

.--------

1905

1910

1912

1914

1907A-2

1907A-3

1907A-4

1907A-5

1907A-6

1930-IX

1931

1932

1933

1934-1

1934-2

1934-3

1939-1

1939-2

1939-3

481O-XY

4811-XY

4815

4819

3752-X

3753-X

1940

1941

1941-1

1950

1950-1

1950-2

1950-3

5950

4820

4824

4103-1

4104-1

4106-1

4126-1

4127

4128-1

4129

4136

4137

4138-1-E3

4138-2-E3

4521

4522

Modular

Computer

Systems

Modcomp

II and

IV

Communications

Processors

Purchase

Communications

Asynchronous Multiplex Controller;

128

lines 1,240

Asynchronous Multiplexer;

32

lines,

75-9600

bps 2,580

Asynchronous Line Interface; 2-lines, RS-232C 515

Asynchronous Line Interface; 2-lines,

20

ma

current loop 515

Universal

Communications

Controller-

32-lines 3,710

64-lines 5,150

128-lines 8,240

192-lines Home Office

Quote

256-lines Home Office

Quote

Universal Communications Chassis for 1907

1 Port (32 lines)

3,610

2 Port (32 lines)

4,440

Line

Interfaces-all

2 lines

Asynchronous; RS-232-C 75-19.2K

BPS

515

Asynchronous;

20/60ma

Isolated 75-19.2K

BPS

515

Asynchronous;

20/60ma

Bat. supplied 75-19.2K

BPS

515

Byte-Sync.; RS-232-C 2K-9.6K

BPS

570

Byte Sync.; Bell

301/300

19.2-230AK

BPS

670

Byte Sync.; CCITI V.35 40.8K

BPS

600

Bit Sync., RS-232-C 2K-9.6K

BPS

825

Bit Sync.; Bell

301/303

19.2-230.4K

BPS

905

Bit Sync., CCITI V.35 40.8K

BPS

850

Directly attached Line

Interfaces-

Asynchronous Interface; 2-lines,

20

ma

current

loop, 1,450

75-9600

bps

Asynchronous Interface; 2-lines, RS-232C,

75-9600

bps 1,450

Synchronous Interface; 2-lines, RS-232C,

11

0-20K

bps

1,450

ACU Controller 2,900

Console

Console Controller, RS-232C, for

4903

only

880

Console Controller, Async Printer, for

4903

only

880

Adapters

CDC

3000

Channel Adapter

6,000

MC/CDC

3000,

6000

Satellite Coupler

8,000

1941

with

remote initialization

9,000

MC/IBM

360,

370

Interface

8,000

1950

with

remote initialization

9,000

1950

with

power control

8,800

1950

with

remote initialization and power control

9,800

IBM Emulator Channel 7,000

MC/MC

Parallel Computer Link

4,120

MC/MC

Serial Computer Link

2,060

Disk

Storage

Fixed-Head Disk and

Controller-

256K words

18,600

512K words

20,600

1 Megaword

41,200

Movable Head Disk and

Controller-

1.3 megawords

9,800

Additional

1.3

megaword drive for 4126-1 7,225

2.6 megawords

12,900

Additional 2.6 megaword drive for 4128-1

9,500

10

megabytes 14,450

Additional

10

megabyte drive for

4132

9,275

84

megabytes

33,000

Additional

84

megabytes drive for 4138-1-E3

25,750

Controller and Floppy Disk

drive-

150K words

4,.Q20

300K

words

6,180

©

1980

DATA

PRO

RESEARCH CORPORATION, DELRAN,

NJ

08075

USA

REPRODUCTION PROHIBITED

C13-641-109

Processors

Monthly

Maint,

50

13

5

5

50

50

50

50

50

30

30

10

10

10

13

2

4

80

80

70

75

90

90

70

40

40

105

133

170

85

40

125

80

140

90

230

200

40

60

..

C13-641-110

Processors

~

Modular Computer Systems

Modcomp II and

IV

Communications Processors

4190

4191

4193

4192

4211-2

4213

4214-2

4216-1

4217-1

4148-1

4156

4164-1

4168-1

4411-2

4412-2

4611

4612

SOFTWARE

Memoryt

Bulk Core Storage

256K-byte Device File and Controller;

up

to 2 megabyte

capacity

256K-byte Device File; does not include controller; up to 4

megabyte capacity

Memory+ Controller,

with

dual access

256K-Byte Memory Module for

4190

or 4191

Printers with Controllers

6oo-lpm Printer

50-150-lpm Printer

3OO-lpm

Printer

loo0-lpm

Printer

Printer

IPlotter

Magnetic Tape Units with Controllers

9 track,

800

bpi

9 track, 1

600

bpi

9 track,

75

ips,

800

bpi

9 track,

1600

bpi, 75 ips

Card Units with Controller

3OO-cpm

Reader

l000-cpm

Reader

CRTs

Basic

CRT

(requires

4811,1912,

or 1931)

CRT;

Hazeltine

1500

(requires 4811, 1912, or 1931)

Modcomp

II/IV

Diagnostics/Utilities

MAX

II,

Core-resident version

MAX

II/III Operating System/Support

MAX

IV Operating System/Support

MAX

IV Listings

MAX

IV Support Software

MAX

IV Support Listings

MAX

COM Software

MAXCOM

Listings

VERSAPLOT Software

VERSAPLOT Listings

X-

Y Plotter Software

X-V

Plotter Listings

IBM

2780/3780

Emulator Software

IBM

2780

Emulator Listings

CDC

200

Emulator Software

CDC

200

Emulator Listings

MAXNET

III

Software

MAXNET

III

Listings

MAXNET

IV

Software

MAXNET

IV

Listings

Sort/Merge

Sort/Merge

Listings

'Price

depends on recording medium

.•

Purchase

20,600

15,450

5,150

10,300

17,000

9,500

14,450

16,000

16,500

10,550

10,300

13,700

22,150

5,310

8,100

2,010

2,840

©

1980

DATAPRO RESEARCH CORPORATION. DELRAN.

NJ

08075

USA

REPRODUCTION PROHIBITED

Monthly

Maint.

227

115

30

50

125

91

75

99

140

99

165

135

210

50

70

25

25

Purchase

Price

20-1.250

600

800-2,300

1,100-1,600

4,000

700-1,200

2,000

500-1,000

1,200

1,500-2,000'

1,500

250-750'

100

250-750'

100

250-750'

100

1,000-1,500

1,200

1,100-1,600

1,200

250-750'

100

JANUARY

1980

(/

I