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DEC-08-XSMAD-A-D

December 1976

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Document:	197603 PDP8swNews
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Pages:	61
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OCR Text

Digital Software News
PDP-8
MARCH 1976
DEC-08—XSMAD-A-D

The material

in this document is

for

information purposes

Digital
only and is subject to change without notice.
Equipment Corporation assumes no responsibility for any
errors

and

which may appear in this document.
Software binaries
The standard
are provided only under licenses.

sources

terms and conditions, OEM Agreement, and/or quantity discount
agreement contain the licenses for all binaries other than

for

the

DECsystem-lO.

SOFTWARE SERVICES
Copyright 1976 DIGITAL EQUIPMENT CORPORATION

PDP-8 DIGITAL SOFTWARE NEWS

Published by Software Communications

Digital Equipment Corporation
P.O. Box F

Maynard, MA 01754

(617) 897-5111, ext 5411

The monthly Digital Software News serves those licensed to use DIGITAL software for the PDP-8. It publishes new and

revised software descriptions, programming notes, software problems and solutions, and documentation corrections. Much
of the material is developed from answers to customer Software Performance Reports significant to the general audience.
The Digital Software News is directed to the software contact at each software installation. (The software contact is that

person directly responsible for the Operation of the software.) There is to be only one software contact per software installation. No mailing will be made to addresses without a software contact name.
The format of the Digital Software News allows it to be reassembled into a customized reference notebook for a customer’s

software interest.
The PDP-8 Digital Software News supports these products:

08/8
Ext

V3B

(BASIC, BATCH, TECO)

FORTRAN

IV V2

FORTRAN

V3B

V2B

COS-310 V5

COS—3lO/2780 V5

Plotter Vl

Industrial BASIC V3

EduSystems

PAMILA Vl

20 V4

RTS-8 Vl & V2

25 V3

50 V8.22

V8.24

CAPS-8 Vl

COS-300 V3

Foreground/Data Entry V3
(Multi) V3.10
COS-300/278O RDCP V5

MTS

Betty A. Steinfeld, Editor
Carol Bibbins, Publications Coordinator
TRADEMARKSOFDKHTALEOUWMENTCORPORAHON

MAYNARD,MASSACHUSETTS

COMPUTER LABS

GLC-8

IDACS

CDP

DDT

KA10

lNDAC-8

RADS

MASSBUS

DEC

LAB-K

QUICKPOINT

RSX

TYPESETJl

DECUS

PDP

DIBOL

RSTS

CLAS$C

DIGITAL

SABR

EDUSYSTEM

DECCOMM

DECAL

EDGRIN

TYPESET-B

OMNIBUS

PHA

XVM

FLIP CHIP

UNIBUS

03/8

LAB8

FOCAL

DECTAPE

COMTEXJl

DECSET

DECSYSTEMJO

Digital

Software News
March 1976

PDP—8

Sequence

Cumulative

Index

through March

1976

RTS/8 Version 2, Real-Time Operating System

PRODUCT ANNOUNCEMENT:

COS—300

DAFT
DAFT Will

Not Access Records

Past Number

lOOO

MONITOR

Directory Characteristics

COS-310
DAFT

DAFT Will

Not Access

Records Past Number 1000

10*

SYSGEN

4*+

System Crashes
Changing System Device
EDU-SO

TSS/8

BASIC
PIP

Invalid BASIC Files

Creates

08/8
BASIC

Incorrect Values

Produced for Numeric

Constants

20*I
22*

BCOMP/K Switch
BATCH

Input File

Cannot Move BATCH

CCL

Edit Command Incorrectly Handled
CREF

Output

at End of

Changing
FIXMRI

Pass

the Number of Lines Per

Patch to CREF

Dollar

Patch to CREF

Sign

JSW Patch to

FORTRAN

Page

4*
5*

6*
7*

CREF

Long Line Patch to

CREE

DEXP Function

Restriction

Article contains

Article is

a patch.
replacement.

18+

Software News

Digital

March 1976

SequenCe
08/8
HANDLERS

Floppy Disk Bootstrap
Optional Patch to NULL Handler

7*i
10*T

Patchable Location in Null Handler

K533 Use of Up-Arrow

RTS—8 Version 1
CLOCK TASK

Trouble With Clock Queue
MCR
Some

Time-of—Day Requests

Run

24 Hours Late

05/8 SUPPORT TASK
Using 08/8 Support

RTS-8 Version 2
EXECUTIVE
Cannot Free Partition With WAITM

MCR

Some

Time-of-Day Requests

OS/8 SUPPORT TASK
Using 08/8 Support
Communicating Between 08/8
TTY

Run

24 Hours

Late

2+
and RTS-8

TASK

Deficiency in

TTY Task

MANUALS

CASSETTE PROGRAMMING SYSTEM USER'S GUIDE

Subroutine BEGFIX

Article contains

Article is

patch.
replacement.
a

News

Digital Software

March 1976

CUMULATIVE

INDEX

Sequence

Component

Mon/Yr

COS—300

COMPILER

Acceptance of Improper

1* May 74
2* May 74

Statements

Initial Values

Compiler Incorrectly Computes the Number of Free
High Priority COS—300 COMPILER Modification
Binary Scratch Area Overflow
Compilation for DDT

Buffers

Jan

5* Aug 75
6* Sep 75
7*

Undetected IF Errors

Compiling

3* Mar
4*

Sep 75

8* Dec 75

Many Literals

DAFT

Input

Records with Size of

DAFT Will

Not Access

509

510

May 74

2* Mar

Records Past Number 1000

DDT
DDT
DDT

Recognizes Only 254 Symbols
Breakpoint Restriction

Jul

Sep 74
Aug 75

DIBOL
DIBOL

Introduction Errors

DIBOL Errors

DTMARK

DTMARK Modifies

1* Apr 75

Itself

FGBG

Incorrect

Display of

the Last Character in

Negative

1* May 74

Field
Idle Printer Until

Character

Input

NUmber of Filler Characters After

Foreground Terminal
Carriage Return,
on

2* May 74
3* Sep 74

Linefeed

Echoing a Character Typed
Writing Out Records
Turning On or Off the Numeric Keypad
Computing the Checkdigit Improperly

sequence numbers have been retracted
Articles dated before Sep 75 will be found in the COS-300

Missing

Software Performance
*

Article contains

Summary

patch

Sep
Sep
6* Sep
7* Sep

74
74

Digital

Software News

March 1976

Sequence

Component

Mon/Yr

COS—300
MCOMP

Incorrectly Determined Core Requirements
Symbol Table Overflow Incorrectly Handled

1* Apr 75
2* Apr 75

MONITOR

Directory Commands
Number of Filler Characters After

Carriage Return,

1* May 74
3* Sep 74

Linefeed

Turning Off
Incorrect

the Numeric

Keypad

Buffer Pointer With Multivolume Files

writing Files with Full Directory
Directory Characteristics

Sep 74

5* Apr 75
6* Nov 75
7

Mar

MULTI

Runtime Errors

in the COS—300 MULTITERMINAL DIBOL

Marking Upon Closing Files

EOF

Unlock May Fail
RETURN WITHOUT CALL Error

1* Jan 75
2* Jan 75

3* Apr 75
Jul 75

5* Aug 75
76

CTRL/C May Hang System

6* Jan

Record Locks

PIP

of File

Loss

1* Apr 75

Space

Writing Files

with Full

Directory

SYSGEN

Running Foreground / Back g round
.

1/0

Errors

Nov

Sep 74

2* Jan 75

Digital Software

News

March 1976

CUMULATIVE

INDEX

Component

Ssquense

Mon/Yr

COS-310
Line Printer Head

1* Oct 75

Positioning
Binary Scratch Area Overflow
CTRL/U Function
System Crashes
System Hangs
Improper IF Statements,

Jan

Oct

Mar

5* Jan 76
6* Jan

Using OS/8 Floppies

Random File Loss

8* Feb 76

DDT

Troubles

Changing System Device
DAFT Will

Not Access

Jan

9* Mar 76
10* Mar

Records Past Number 1000

RTS—8 Version 1

08/8

SUPPORT TASK

Incorrect File

Apr 75

Undefined

Oct

Length
Symbols in OS8SUP.PA

Using 08/8 Support

75
76

MCR

Time-of-Day Requests

Some

Run

24 Hours

1* Mar 76

Late

CLOCK TASK

Trouble With Clock Queue

Mar

RTS—8 Version 2

EXECUTIVE
Cannot Free

Partition with WAITM

MCR
Some

TTY

Time—of-Day Requests

Run

24 Hours Late

TASK

Deficiency in
OS/8

Task

TTY

SUPPORT TASK

Change for Executing BATCH
Using 08/8 Support
Communicating Between 08/8 and RTS—8
Source

Missing
*

sequence numbers have been retracted

Article contains

patch

COS—310 articles dated before Jan 76 will

Software Performance

Summary

found

in the COS—310

Feb

Mar

Software News

Digital
1976

March

CUMULATIVE

INDEX

Sequence

Component
EDUSYSTEM

20
1* Apr

9 Disables Terminal

ERROR

Strings Compare Improperly
IF Statement Error is Ignored

EDUSYSTEM 25 Version

Apr 75

3* Apr 75
4* Apr 75

EDU20 May Not Use Entire Print Line
Characters Lost on Output

Error

Mon/Yr

Jul 75

1* Apr 75

Message Incompletely Printed

TAB Function Malfunctions

2* Apr 75
3* Apr 75

Simplifying System Startup
Creating Public Files
Using RK8E as the System Device
String Data Comparison
Multiple DEF Statements Hang System

6* Apr 75
7* Apr 75

FOR-NEXT

Use

4* Apr 75
5* Apr 75

Loop May Hang System

Overflow

During Exponentiation

Mishandled

Lines that GOSUB to Themselves May Crash System

Exponentiation Causes
Use

SCRATCH and

Apr 75
May 75

of READ in Multistatement Lines

ERROR 1

SAVE With Care

10* May 75
11* May 75

Jul

Feb 76

EDUSYSTEM 25 Version 3

Exponentiation Causes
Use

SCRATCH and

EDUSYSTEM

ERROR 1

SAVE With Care

Feb 76

TSS/8 Version 8.24

BASIC
PIP Creates

Invalid BASIC Files

Mar

1* Dec

PALD
PALD Does

Not Make Use

of Wide

Lineprinter

PUTR
PUTR

Outputs Superfluous Characters

PUTR Cannot Transfer
PUTR

Multiple

BASIC Files

Destroys Output Directories

Dec

MANUALS

EDU-50

TSS/8 MANAGER'S GUIDE
Manager's Guide is Missing BUILD Instructions
Manager's Guide Has Parameter Wbrd Switched
EDU-SO

TSS/8 USER'S

Changed

50 articles dated before Dec

Software Performance

75
75

Dec

GUIDE

User's Guide Has Parameter Wbrd
EDUSYSTEM

Dec
Dec

Summary.
Article contains a patch.

75 will be

found in EDU—SO TSS/8

Digital

Software News

March 1976

CUMULATIVE

INDEX

Sequence

Component

Mon/Yr

OS/8
ABSLDR
ABSLDR

1* Oct 75

/I Option

BASIC

Range of Values Returned by GET Functions
Memory Overflow in the BASIC Editor
Size

Default Core

PDP-8

Paper Tape Input
of Dummy Arguments in

Use

Meaningless

4*
BASIC

Code Generated

Lab 8E Functions

for

08/8

by LIST XXXX

STR$ Ignores Minus Sign
from Core Image with File Statement
BCOMP Does Not Accept Paper Tape Input
BCOMP

Core

Printed

Causes

System

Jul 75

18* Oct 75

Incorrectly

Produced for Numeric Constants

Incorrect Values

Sep 75

16* Jul

TTY Handler with BRTS

EN Error

10* Jul 75

17*

are

8* Apr 75
9* Apr 75

15*

Lost

Large Numbers

Using

Jan

Nov 74

13* May 75
14* May 75

Starting Points
Inaccuracy in EAE Floating Point Package
Failure of String Store
DIS

Gets

11* Apr 75
12* Oct 75

Image Files

/K Switch Fails

Memory Overflow Encountered in Editor

BASIC

Sep 74

7* Mar

BASIC

CHAIN Fails

Chaining BASIC

1* Aug 7
2* Sep 74
3* Sep 74

Crash

BCOMP/K Switch

19* Dec

20*

Jan

Mar

BATCH

Passing ALTMODE to the Keyboard Monitor
Running BATCH from Cards
Ignoring Nulls in BATCH
Running BATCH in 32K
Cannot Move

Missing

from BATCH

Input File

BATCH

sequence numbers

have been retracted.

Articles dated before Jan 76 will be found in the 08/8
Software Performance Summary
*

Article contains

patch.

1* Apr 75
2* Sep 75
3* Nov 75
4* Dec

Mar

Software News

Digital

March 1976

Sequence

Component

Mon/Yr

08/8
BUILD

Unable

1* Nov 74

Fails to Zero Location SOFSET

BUILD V4

Boot BUILD After

Building 08/8

from Paper

System Device

Length

SIZE Command

for BUILD

2* Nov 74

?Name Error

Tapes

Feb 75

4* Mar

5* Apr 75

CCL
Incorrect Date

and Error Messages

1* Jan 75

Source

2* Aug 74
3* Apr 75

Changes

CCL

Default Extensions for TECO

4* Apr 75
5* Feb 76

EDIT Command

Edit Command

Incorrectly

Handled

CREF

1* May 75
2* Oct 75

Conflict in /E Option
Form Feed

Missing

3* Mar

Output at End of Pass 1

Changing

the Number of Lines Per Page

FIXMRI

Patch to

Dollar

Sign

JSW Patch

CREF

Patch to

CREF

Long Line Patch

CREF

DIRECT

4* Mar

5* Mar

6* Mar

7* Mar

8* Mar

Problem with Default Device Name

Messages Indicate

Erroneous

TTY

in DIRECT
Handler

Missing

1* Aug 74
2* Feb 75

EDIT
Erroneous

1* Mar

EDIT

Message Output
/A Option Removed

Rubout

Algorithm Does

Not

Always Work Correctly

Apr 75

3* Mar 76

EPIC

Chaining

EPIC

Oct

Aug 74

FORMATTERS AND COPIERS

Formatting Multiple DECtapes

Not

Work

DTCOPY

May

TDCOPY

Reliability Improvement

Article

temporarily withdrawn.

2A*May

Jan

o\°

Digital

Software News
March 1976

Sequence

Mon/Yr

Aug 73

Literal Pool Overflow

Oct

DECtape I/O Routines

Dec

incorrect Calculation of Line Numbers

4A*Feb 75

Trig Package Inaccuracy
Chaining to LOADER
Using TTY Output With SABR

Jun

Software Core

Jul

8* Feb

Component

OS/8
FORTRAN II

Adding Modules

the

Library

FORTRAN II

Implied

FORTRAN

Scaling in

Size

Loops

Statement Number

CLRPLT and

LAB-8/e Systems

PLOT on

in Error Traceback

Undetected SF Error
in FORTRAN IV

Errors

Temporary Variables in ASF

Mysterious

FORTRAN

Software Core

Chaining
Call

Load Map Codes

Size Restrictions

RALF

Statement Mishandled

Format

Use

TIME Error

of Pause

1* Jan 75

the FACTOR Routine

Possible Erroneous

Dec

5* Jul 75

Statement

Failure of Fatal Error Handler in RALF

Oct 74

Oct

5* May 75
6* May 75
7

Apr 75

8* Aug 75
9

Dec

10*

Oct 75

Nov

14* Nov 75

Use of EAE Mode A Under FRTS

Nov

Passing Arguments
LIBRA /I Option Fails

16* Dec

DEXP Function

Restriction

Failure in DATA Statements
END

Statement

DN Error

Required

Message Issues wrong Statement Number

Multiple File Input

17* Dec

Jan

19*

Jan

Feb 76

22*

Feb 76

Error

in SINH Function

23* Feb 76

Error

in AINT,

24*

INT, and IFIX

Feb 76

FOTP

9
0

Response to MONITOR ERROR 6

1* Mar

Additional

2* Feb 76

Article

Information WOrds

temporarily withdrawn.

o\°

Digital

Software News

March 1976

Component

Sequence

Mon/Yr

OS/8
HANDLERS

Improvement

TD8E

1* Mar

Nonsystem Handlers

Interaction Between the RKBE System Handler and the
RK8E Nonsystem Handler

Response to CTRL/C

RK8E Status

Sep 75
Dec

SYstem Disk

the RF08

System DF32 and RF08 Handlers Reference SOFSET

Apr 75

5* Apr 75
6A*Apr 75
6* Nov 75

of Auxiliary Teletype
Magnetic Tape
Floppy Disk Bootstrap
NULL Handler
Use

Apr 75

7* Mar 76

Apr 75
Apr 75

Creating a System Handler
Optional Patch to NULL Handler

10* Mar 76

Patchable Location in Null

Mar

Jan

Sep 74

KS33 Use of

Handler

Up—Arrow

INDUSTRIAL BASIC

Guideline for INDUSTRIAL BASIC Floppy System

MCPIP
Erroneous

Image Mode Transfers

MONITOR
Error

CHAIN

fails for Full Field Saves

1* Apr 75
Jun 75

Monitor Error

Handling a

PAL8
Use

of Conditionals

Problem with the

The

/C Option and

Use

of the XLIST

/F Option Does

1* Aug 74
2* Aug 74

/B Switch in PAL8
the Default Temporary File

Pseudo—op

Not Disable

PAL8 Will Not Restart

Sep 74
Dec

Extra

Zero

Fill

Properly

Seventh Level Bit in First Frame of Check Sum

/W Option Fails
Revision to /F Option Patch
Switching Between Nonresident Handlers

Feb 75

Apr 75

7* Mar 75
Oct

9A*Apr

9* Jan 76

PIP

wrong Length for RF08

Incorporating

Apr 75

Oct 75

Jun

RXOl

Support in PIP

PIPlO
PIPlO Date Overflows

Digital Software

News

March 1976
‘

Component

Sequence

Mon/Yr

OS/8
RESORC

Identifying Paper Tape and Cassette Handlers
wrong Length for RFO8

1* Nov 74
2* Apr

TECC

Pointer Moves

Beyond

1* Aug 75

Buffer

Oct

Sep 74

Handbook Errors

Apr 75
May 75

Dec

Feb 75

TECO Uses

wrong Arguments

MANUALS

INTRODUCTION TO PROGRAMMING

Introduction to

08/8

Programming

HANDBOOK

Nonstandard File Names
PAL8

Table

Symbol
Magnetic Tape
Exponentiation of Negative
Permanent

Numbers

03/8 SOFTWARE SUPPORT MANUALS
Fragmented Directory Segments

10A Apr 75
10
Sep 75

Pre

Mar

SMALL COMPUTER HANDBOOK

DR8—EA lZ—Channel Buffered
OP

Digital I/O

Code Error

Constants

into the Accumulator

Sep 74

Dec

Software News

Digital

March 1976

OUT OF

TOUCH WITH YOUR HARDWARE?

you're

long—time

hardware has become.
ments but

probably

small

TRY DIGITAL

HARDWARE

DOCUMENTATION.

user, you know how complex
up-to—date on hardware develop—
about subassembly details.
You

computer

You may be

still a bit vague
feel out of touch with the machines around you but

Useful hardware documen—
you don't know where to look for help.
tation is hard to come by.
Unless it's from DIGITAL.

have hundreds of titles in stock for all our hardware, its
components and peripherals: user reference manuals, operator
This is
handbooks, even maintenance manuals and print sets.
We

the documentation that is used
you

can

sure

it's

by our field service people
up—to—date, technically accurate, and

comprehensiVe.
And because we're committed to

we're

making

satisfying our

these documents available

you

(substantial quantity discounts reduce prices

customer
at

low

even

needs,

prices

further).

If you want to learn more about your hardware, we have the working
tools you need.
Just contact your nearest DIGITAL field office
for a catalog listing our hardware documentation, abstracts of
our

14A

most

popular handbooks,

and

complete ordering information.

Ifldflflall
Software Product Description
PRODUCT NAME:

SPD 4.20.3

RTS/S, Version 2, Real-Time Operating System

DESCRIPTION:

RTS/ 8 is the Real-Time Operating System for the PDPsS
family (excluding the PDP-S/S) and for the PDP-lZ. It
allows up to 63 tasks to run concurrently while competing for resources on a fixed priority basis. RTS/ 8, once
generated under OS/ 8, can be entirely memory resident
or have non-memory resident tasks.

Monitor Console Routine (MCR) Module

The Monitor Console Routine provides the opera-

tor/ programmer with functions to control, inspect,
debug, su5pend, schedule and print the status of
tasks within the system.
0

Mass Storage Modules

This group of drivers accepts the same request message format to read or Write blocks on the following
storage devices:

RTS/ 8 is an event driven multitasking, multiprogramming
real-time operating system which in large configurations
can become a deveIOpment system with 08/8 as well.
The RTS/8 Executive module (task) is entirely memory
resident. The size of the executive typically ranges from
640 to 1K words of memory, depending upon the number of tasks. Other features of RTS/S include the follow-

RXS Floppy Disk
RKS-E Cartridge Disk
RKOS Cartridge Disk
DF 32/ RF08 Fixed Head Disk
TC08 DECtape
-

—

mg:

0
0

Maximum of 63 foreground tasks and one background
(the OS/ 8 module) task.
Fixed priority of task.
Tasks can be scheduled by themselves, by another
task, or by the Operator.
Tasks can be scheduled for execution immediately,
at'a fixed interval from the time requested or at a
specific time of day.
Tasks can be swapped into memory when required.
Tasks can be written onto mass storage prior to being

LINCtape
0

This module provides the user the ability to look-up
create and delete files in OS/ 8 directories from a
foreground task. This module, when used in conjunction with one or more of the previously mentioned
mass storage modules, allows the programmer the
capability to read or write OS/S files onto the previously mentioned storage device.
,

swapped out.
o

The RT S/8 executive provides facilities for tasks to
communicate with other tasks.

The following modules (tasks) are provided by Digital
in a format which, when tailored by the user, constitutes
a specialized RTS/ 8 system.
0

RTS/S Executive (monitor)
Controls task execution

Schedules events (if a clock is available on the system)
Sends messages to system tasks
SuSpends- task execution
o

Swap Module
This module actually swaps tasks into or out of memory.. SWAP determines whether a task is already in
memory, or whether it must be first written onto
mass storage before another task may reside in its partition (area of memory), or whether a new task can be
swapped into memory without regard to what was
in the partition previously.

January 1976

03/8 Files Module

03/8 Background Module
The combination of the previously mentioned device drivers and the OS/ 8 Background Module allows
the execution of any of the OS/S Operating system
utilities (i.e., PALS, BASIC*, EDITOR, TECO,
BATCH) to run under the RTS/ 8 executive. 03/8
is run in the top two or more memory fields under
control of the KT8CE (standard on PDP-8/E,F,M
with 8K or more core memory) or time shared
eight (KT8-I or KTOS) hardware Option. One of
these options are required for OS/ 8 Background
execution. In addition, a background terminal
must be dedicated to the OS/ 8 system execution.

*Excluding Industrial BASIC

DEC-'OS-XPDA I-C-D

SPD 4.20.3

RTS/ 8, Version 2, Real-Time Operating System

Included in the module is:
0

Clock Module
It accepts requests (in the form of RTS/ 8 messages)
to perform actions after a specified time has elapsed.

Console Terminal Module

Non-Console Terminal Module
These
single terminal in either line or
character mode. Input in line mode is terminated by
a carriage return or an ALTMODE character, and
may be edited with a RUBOUT or CRTL/U character.
In character mode, input is not echoed and is terminated by overflow of a specified character count.

B. With 08/ 8 or OS/ 12 background support
0
Any PDP-S family processor (except a PDP8/S) or a PDP-12 with 12K words of memory
a
(2) Terminals
o

C. With 03/ 8 or OS/ 12 background support run-

ning BATCH
.

Cassette Module
The RTS/ 8 cassette driver is used with the TA8-E/
TU60 DECcassette drives to allow the user to read
or write data on cassette.

Cassette File Module
This module allows the user to look-up, enter and
delete files from a DECcassette. When used with the
cassette driver, the user can read or write standard
CAPS-8 format data files on DECcassettes.

2. Minimum RTS/S development configuration is
03/ 8 or OS/ 12 Version 3 or later which requires
a PDP-8 or PDP-l2 with 8K words of memory,
64K Words of mass storage and a terminal (VT 50
or

LA36).

Line Printer Module

The RTS/S line printer supports an LE-8, L88~F or
LV-8 Line Printer. Its structure is identical to line
mode in the terminal module.
0

Same as B above, but with 16K words of
memory.

drivers handle a

RX8, TC08, RKOS, LINCtape (PDP-‘12)

Power F ail/ Auto-Restart Module

This driver provides the mechanism by which the
system can recover from a power failure. If a power
low condition occurs, the processor state is saved
and the processor is halted. When power is restored,
the processor state is restored and control is transferred to the power fail drive.
Universal Digital Controller (UDC-8)/Industrial Controll-

OPTIONAL HARDWARE SUPPORTED:
Additional memory (up to 32K words system total)
DKS-EA, DK8-EC, DKS-EP Clocks
LA30-PA, VTOS Terminals (up to 2400 baud with

KL8-JA)
TC08 DECtape only

DF32, RFOS, RK08, RK8-E Disk or RX8 FIOppy

Disk
DPS-E powerfail/auto-restart
TAS-E Cassette
UDC-S/ICS-S Industrial Control Subsystems
LE-8, IS8-F, LV-8 Line Printer
'

LINCtape
VTSO, VT52 Video Terminal (teletype level support)
LT33, LT35 Teletypewriters
LA30, LA36 Serial DEeriters
PREREQIHSITE SOFTWARE:

OS/ 8 or OS/ 12, Version 3 or later.
OPTIONAL SOFTWARE SUPPORTED:

None.

er Subsystem (ICS~8)

This driver gives the user the capability of controlling
all the various types of UDC/ICS modules. The driver
performs two types of actions: immediate and deferred. Imrnediate actions include reading and sending
Digital values to apprOpriate UDC/ICS modules.
Deferred actions may be linked to specified events
within the UDC/ICS (i.e., counters overflowing,
switches being thrown).

TRAINING CREDITS:

None.
SUPPORT CATEGORY:

B, Software Support will be provided as listed in the
Software Support Categories Addendum to this SPD.
UPDATE POLICY:

MINIMUM HARDWARE REQUIRED:
1. Minimum RTS/8 configuration for a Run-Time system is as follows:

A. Without OS/ 8 or OS/ 12 background support
0
Any PDP-8 family processor (except a PDP—8/ S)
or a PDP-l2 with 4K words of memory.
0
Console Terminal
0
DECtape or DECcassette or LINCtape

Software Updates, if any, released by Digital during
the one year period following installation, will be
provided to the customer on one of the standard distribution media listed in the SPD, at the then current
update price. After the first year, updates, if any,
will be made available according to the then prevailing

Digital policies.

RTS/S, Version 2, Real-Time Operating System

This software is furnished under a license for use on a
single CPU and can be copied and modified (with inclusion of Digital’s cepyright notice) only for use on such
CPU, except as may otherwise be provided in writing by

Digital.
A license agreement for Digital Software Program Sources
must be in effect before a source or listings package may
be obtained.
The following key (A,B,C,N,Y) represents the distribution
media available for the product and must be specified at
the end of the “Q” number, i.e., QFOZQXC sources
=

DECtape.
A
B
C

N
Y.-

LINCtape

Paper Tape
DECtape

DECcassette
Floppy Disk

Source Options

QFOZO-X— Single-use license, sources, listings, documentation, Support Services (media: B,C,N,Y).
QKOZOX— Single-use license, sources, listings, documentation, Support Services (media: A).
QFOZl-X— Single-use license, sources, listings, documentation, includes 08/ 12 Version HI binaries,

Support Services (media: B,C,N,Y).
QKOZl-X— Single-use license, sources, listings, documentation, includes 05/12 Version III binaries,

Support Services (media: A).
Update Options
The update is distributed in source form on the appropriate medium but includes no installation or other services
“nines snoninnallryr
stnfgfl UH}.
"H‘EI‘WiSE.
yvuialv
“LLLL

usuvo

QFO20-N— RTS/ 8 Update Kit, updates Version I to
Version II (media: B,C,N,Y).
QKOZO—N— RTS/ 8 Update Kit, updates Version I to
Version 11 (media: A).
QFOZI-N— RTS/ 8 Update Kit (with 03/8) (media: B,

C,N,Y).
QKOZl-N— RTS/ 8 Update Kit (with 08/12) (media: A).

D4203

SPD 4.20.3

SOFTWARE CONTACT CHANGE?
If that person responsible for your DIGITAL software

has changed, attach the most recent address label her-e.

Subscription ends with the date
given at the upper right of your
label.

New Software Contact:

Prior Software Contact:
Software Product:
Software Monthly:
Allow 6 to 8 weeks for change of name or new

subscription to become effective. To avoid
interruption of service, notify your mailroom
or Post Office before relocation

of installation.

In the U.S., the Post Office will forward Third

Class periodicals

for a fee.

Monthlies damaged in mailing will be replaced if
the damaged copy is returned.

MAIL TO:

Software Communications

Box F

Maynard, MA 01754

Request for subscription information should
be addressed to your DIGITAL field office.

Digital

Software News
March 1976

DAFT Will

Not Access

Records Past Number 1000

PROBLEM :

DAFT will

not

mode.

Also,
positions:

records past number 1000 during a GOTO in input
the record number displayed after a search is three
access

SOLUTION :

patch will allow a GOTO up to record number 99,999 and will
display five positions after a search. The version number of DAFT
This

becomes 3.07B.

EOE

WQHITHR

IFE

ymFTm

3+G?G

mamas?

I243

IssS'FMUM?

DAFTAX?

Isa

IVE flfiFTE
Ififitn UEREIQH?

rfiITaTTY9"anT

UEHSIUH

can

WGNITDR

Isa

flfiFTfiY

fiflfl

fiflflITflR

34¢?3

34%?E

SOFTWARE PRODUCT

VERSION

COS-300
COMPONENT

DAFT

REPLACEMENT ARTICLE

[:::]

07A

SEQUENCE

2
NEW

VERSION

SUBPROGRAM OR ADDITIONAL INFORMATION

‘3

cufiPynaFTmynaFTsxm

3¢0?E

BmFTBKT

Imm

PAGE
OF

ORIGINAL DATE

.March 1976

Digital

Software News

March 1976

Directory Characteristics

(SPR 8-1798)

PROBLEM :

A NO

ROOM message

implies

there is

is output from the COS monitor when the

directory

one

room

total of

that has

245

entries actually contains 245 files plus

free entry at the end for the number of free blocks

remaining.

The NO ROOM message received in this case indicates that the
directory is full even though there are free blocks remaining.
95

4095

MONITOR*

LOGICAL UNITS

PROGRAM FILES

6496

1378

*See page 6—3 of the COS 300/310 System Reference Manual
the breakdown of the Monitor.

(DEC—08—OCOSA-E-D)

for

SOFTWARE PRODUCT

VERSION

V3.07

COS—300
COMPONENT

VERSION

MONITOR

V3.07G

SUBPROGRAM OR ADDITIONAL INFORMATION

COS

SEQUENCE

PAGE
0F

300/310 System Reference Manual
DEC—08—0COSA+E-D

NEW

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

Software News

Digital

March 1976

DAFT Will

Records Past Number

Not Access

1000

PROBLEM:

mode.

Also,

during

records past number 1000

DAFT will not access

the record number

displayed

after

GOTO

input

search is three

positions.

SOLUTION:

patch will allow a GOTO up to record number 99,999 and
The version number of
display five positions after a search.

This

becomes

DAFT

3.07B.

DAPTR

IFE
.24Q

REEHU?

«585

Fflflfiy

QRR

DNFTOET

TEE

RAFTE

#2310
TOR

UERSIDflp

KHITiTTYy"DfiFT

PERSIDH

3+0?B

’1

DRFTBXY
CQfiPyfifiFTfiyfifiFTfiffi

+R
COR

fiUHITUR

ISA

BRFTKY

CBS

THMQITUR

5.053

5.05D

SOFTWARE PRODUCT

VERSION

COS-310

V5.05

COMPONENT

VERSION

DAFT
SUBPROGRAM OR ADDITIONAL INFORMATION

.CEZ:]

REPLACEMENTIARTICLE

07A

SEQUENCE

10*
NEw
.

will

PAGE
OF

ORIGINAL DATE

March 1976

Digital Software News
March 1976

System Crashes

PROBLEM :

The
l.

following problems exist
system crashes if

The

command processor is

in COS—310 V5.05A and SYSGEN V5.05.

interrupt is received while the
overlaying page D, field i.

The DIRECTORY COMMAND

RUN

puts out ASCII codes without the parity

bit set.
3.

The

provides insufficient delay after

handler

VT¢5

control

characters.

Control does

not

return

the monitor when

leaving

DIBOL program.

SOLUTION :

The version number
following patch corrects these problems.
and
the
version
of SYSGEN is
to
V5.¢5B
changed
V5.05A.
to
changed

The

of the monitor is

Immediately after performing this patch, the system should be
restarted using the hardware bootstr p, and the SYSGEN/C should
be run to install the patched portion of SYSGEN.
For

systems without printers, COS—310 sequence number five should
as part of COS—310 sequence number four to avoid system

installed

lock-up.

Just before

exiting

from the PATCH

program during

sequence

install sequence number five.

number four,

SOFTWARE PRODUCT

VERSION

V5.05

COS-310
COMPONENT

VERSION

SYSGEN
SUBPROGRAM OR ADDITIONAL INFORMATION

MONITOR
NEW

V5 05A
.

REPLACEMENTIARTICLE

SEQUENCE

PAGE
OF

ORIGINAL DATE

October 1975

Digital Software

News

March 1976

sttem Crashes

COS

MONITOR 5.05A

PATCH
COS PATCH

FILE

SYSTEM

NAME:

VERSION

5.05

FATCHING MONITOR
BLOCK: 13
LOCATION t

364

OLD
NEU

6001

VALUE:
VALUE:
LOCATION 3
OLD VALUE:

5765
365

0200
5771

NEW VALUE:
LOCATION 1

END

RELATIVE CHECKSUNI
NEH

BLOCK

BLOCK:

PATCHEO

LOCATION i
OLD VALUE:
NEU

VALUE:
LOCATION i
OLD VALUE:
NEU VALUE:
LOCATION 2
OLD

224
4512
1365
225

5612
535
353

VALUE:

0000

VALUE:
LOCATION I
OLD VALUE:
NEU VALUE:
LOCATION :
OLD VALUE:

4512
354

NEU

0000

5612
365

0000

NEW VALUE: 0200
LOCATION : END
RELATIVE CHECKSUN:
NEU

BLOCK
BLOCK: 20

PATCHEO

LOCATION 3
OLD VALUE:
NEU

5605
OK

7140
OK

147

0000
343

VALUE:

SOFnNAREPRODUCT

COS-310

V5.05

COMPONENT
SYSGEN

SUBPROGRAM OR ADDITIONAL INFORMATION

MONITOR
NE“!

[III

VERQON

V5.05A
REPLACEMENTARHCLE

VERSION

V5.05
SEQUENCE

ngE

2
4f
ORIGINAL DATE

October 1975

Digital Software

News

March 1976

sttem Crashes

LOCATION 3
UALUE:
NEU UALUE:
LOCATION 1
OLD UALUE1
NEH UALUEZ
LOCATION :

0000
5745
345

OLD

0000

343

OLD

0000

6002
344

VALUE:

NEH

VALUE: 775$
LOCATION : END
RELATIVE CHECKSUH:
NEH

BLOCK
BLOCK: 25

LOCATION
OLD
NEH

4270

PATCHEH OK
i

161

VALUE;
VALUE:

LOCATION :
VALUE:
UALUE:
LOCATION :

7765
7771
216

OLD
NEH

5773
5547
END

RELATIUE CHECKSUM:

?560

NEH

PATCHED OK

LOCATION 1
OLD VALUE:

?201

NEH

?300

BLOCK
BLOCK: 26

UALUE:

LOCATION

106

160

OLD
NEH

VALUE: 7435
UALUE: ?441
LOCATION 1 END
RELATIVE CHECKSUH: 0103
NEH BLOCK PATCHED ON

BLOCK: 2?
LOCATION 3

111

OLD

VALUE:

4200

NEH

UALUE:

4300

SOFONAREPRODUCT

VERSKDN

V5.05

COS-310
COMPONENT

VERSKDN

V5.05

SYSGEN

SUBPROGRAM OR ADDITIONAL INFORMATION
MONITOR
NE“!

[:1

V5.05A

REPLACEMENTARNCLE

SEQUENCE

PAGE
OF

ORIGINAL DATE

October 1975

Digital Software News

March 1976

sttem Crashes

LUCfiTION

RELATIVE

CHECKSUH:

EMU

NEU BLOCK PfiTCHED
BLOCK: END

0100
OK

BLOCK(S) PfiTCHEU
FILE NAME: SYSGEN
BLOCK: 6
LOCQTION
OLD
NEU

VALUE:

NEW

UQLUEZ

LOCATION

VALUE:

NEH

VALUE:

LOCfiTION

THIS

FILE

7710

371

7771
7776

OLD

FILE

7650

OLD

THIS

347

VALUE:
VALUE:

LOCATION

373
756$
7540

END

RELATIVE CHECKSUN: 0017
NEW BLOCK PATCHED OK
BLOCK:

LOCfiTION 3
OLD VALUE:

270
0000

NEH

UALUE:
LOCATION :
RELATIVE
NEU

4200
END

CHECKSUH:

BLOCK

PATCHED

BLOCK: END
02 BLOCK(S)
FILE

NfiHE!

4200
OK

PATCHED

EXIT

COS

MONITOR

5.058

SOFTWARE PRODUCT

VERSION

v5.05

cos—310
COMPONENT

VERSION
v5

SYSGEN

SUBPROGRAM OR ADDITIONAL INFORMATION

MONITOR
NEW

[:1

V5.05A

SEQUENCE

PAGE
OF

REPLACEMENT_ARTICLE

ORIGINAL DATE

October 1975

Digital Software

News

March 1976

L—.....E

Cuaug lug Sy stat
..~

_....

PROBLEM :

When
are

changing the system device in SYSGEN,
correctly installed by SYSGEN.

the

appropriate handlers

not

SOLUTION :
This

patch will update

SYSGEN and also

installed in the Monitor.

The

patch

fix any handlers

also

changes

currently

the version number

of SYSGEN to V5.05B.

.R
COS

FILE

PmTCH
PMTCH

BLBCK:

;

4290

UQLUE:
LBCATEDH E

F???

NEH

RELQTIUE

ENE

CHEE

SLV§

BLOCK'PATCHED

ELDER:

5°05

2,7

UQLUE:

HEN

UERSIDN

SYSGEN

lé

L [33113: T I "3N

OLD

SYSTEM

HQHE:

357?
GK

LDCfiTTflN I
ULD UfiLUEi
NEU VALUE:

LDCATIUN i
OLD VALUE:
NEH UALUE:

302
?é?é

LOCATION Z
ULD VALUE:
NEH UfiLUEi

76?5

?é?5

76?5
319
76F5
7&75

SOFFWAREPRODUCT

VER$ON

cos-310

v5.05c

COMPONENT

VERSION

SYSGEN

SUBPROGRAM 0R ADDITIONAL INFORMATION

9*
NEW

05A

SEQUENCE

PAGE
OF
7

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

Digital Software News

March 1976

Changing System Device

LOCATION

RELRTIUE

CHEERSUM:

NEH

BLOCK

ELDER:

END

PATCHED

’2

LOCATION

11-5

OLD

URLUE:

7-576

NEH

VALUE:

7B75

LOCATION :
OLD UBLUE:

Fé?é

NEH

315

HBLOE:

7575

LOCATION

RELATIUE

CHECKSHN:

NEH

?775
0K

BLOCK

ENB

FATEHED

7776

BLOCK:_3
LOCATION

OLD

UALUE:

NEH

VALUE:

344

7676
76?5

LOCATION

RELATIUE

CHECKBUN: 7???
PATCHED OK

NEH

BLOCK

BLOCK:

ENB

LOCATION :
OLD HALUE:
NEH UALUE:

LOCATION
RELATIUE
NEH

?B?5

END

CHECKBUN:

BLOCK

BLOCK:

155

7676

PATCHED

LOCATION

OLB

HOLUE:

NEH

HBLUE:

2?o
77??

4300

LOCATION

RELATIUE

CHECKBOM:

NEH

BLOOK

BLOCK:

7777
OK

ENB

PATCHEO

4301
OK

END

BLOOK<5>

PATCHED

THIS

FILE

VERSION

SOFTWARE PRODUCT

COS—310

V5 05C

COMPONENT

VERSION

SYSGEN

SUBPROGRAM OR ADDITIONAL INFORMATION

05A

SEQUENCE

9*
NEW

ngE

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

Software News

Digital

March 1976

Changing System Device

EfiEH

VALUE

HEN

UfiLUE

BLD

UfiLUE

OLD

LDCRTIDNE

MILL

?é?5

ENTEREBI

COHTIHUE

flHD

FDUHH'flT

flHT

OTHERWISE

THE

ENTER

THEM.

LDCfiTIUNS:

THE

UfiLUE

OLD

fiH

FUR

THO

HflXIMUM

EXQHINE

HILL

YUU

PflTCH.

EKAHINED

HILL

T676

UfiLUE

CHANGES

HERE

HILL

LDCHTIUNS

SEVEN

THE
IF

?6?5,
é

BUT

LDCQTIUNSI

SEVEN

THIS

CDNTINUQTIOH

FULLUMING

THE

SfiHE

LUCfiTIUHS+

EERHINED:

00:2
DDS
135
I)
5..

.L.‘

363
3?3
374

FILE

HAHE:
11

BLOCK:

RELfiTIUE

(ENTER

END

LDCATIUN:

(IF

IF 2
IF 1
IF 0
ELDER

BLOCK:

RRTDHEE

76757

?é76

THEN

fiLL

LOCQTIONS

UHEH

THE

UQLUES

uALUE
VALUE

CHECKSUH

APPROPRIATE
CHQNGED
CHANGED
CHANDED

BEEN

FROM

FILE
EXIT

NAME:

cos

MONITOR

RRTEHED

THIS

7776
777?
0000

FILE

5.05m

VER$ON

cos-310

v5.05c

COMPONENT

VER$ON

SYSGEN

V5.05A

SUBPROGRAM 0R ADDITIONAL INFORMATION

SEQUENCE

9*
NEW

EXAMINED)

BELDUI

SOFTWAREPRODUCT

HAVE

END

BLDDR<3I

THEN

CHECKSUHS

UHERE

uEu

EGUQL

END

LDCQTIUNS)

ABBUE LISTED

THE

IS
7675

(HHERE

LUCQTIUHI é
OLD UfiLUEZ B
NEW VALUE: C

PAGE
OF

REPLACEMENT ARTICLE

ORIGINAL DATE

[:3

March 1976

Digital Software News
March 1976

PIP Creates

Invalid BASIC Files

PROBLEM :

Sometimes output at the end of a BASIC paper tape looks like a
The result is that an invalid file
line number to PIP or PUTR.

is greatedi
v—

ww-

av“

stuck in

When BASIC is aeked to RUN the program,
loop and gradually use up disk space.
QJXCH

m aaaaa

may

get

SOLUTION :

Cut off output at the end of BASIC tapes,
after the end of the ASCII code.

leaving only blank tape

SOFTWARE PRODUCT

VERSION

EDU—SO

V8.24

TSS/8

COMPONENT

VERSION

BASIC

V8.24

SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

1
NEW

REPLACEMENT ARTICLE
_

PAGE
OF
1

ORIGINAL DATE

March 1976

Digital

Software News
March 1976

Incorrect Values Produced

(SPR 8—1628)

for Numeric Constants

PROBLEM :

The Basic

Compiler produces incorrect values for numeric
more than 10 significant digits.

constants with

SOLUTION :

that a numeric
patch fixes this problem with the restriction
truncated.
constant with more than 10 significant digits will be

This

5495/3157 4144
sm1e/3355 4151
144/3449 z;3157:1162;51e1;5544
151/mmaz 3:3753;2161;5551;7@46;SI$1;556@
Isa/maze 5814;fi;7765;5155

TC
.34

sys BCCMP

SOFTWARE PRODUCT

VERSION

05/8

V3
VERSION

COMPONENT
BASIC

SUBPROGRAM OR ADDITIONAL INFORMATION
BCOMP
NEW

REPLACEMENT ARTICLE

V3
PAGE
OF

SEQUENCE

20 ~*

ORIGINAL DATE

January 1976

Digital

Software News
March 1976

BCOMP/K Switch (SPR 8-1776)

PROBLEM :

BCOMP does

Location

always produce an executable core image.
highest field is not loaded correctly.
not set correctly for a save.

not

The JSW

CCB double

TD8e

was

of the

zero

words

not

were

not

correct.

swapped correctly,

and CDFs

were

not

right

for

field two.

SQLJTION :

This

patch

corrects

the

problems.

.GET SYS BLOAD
,ODT

00453/

3336
1335 1336
3344 3342
2314 5353
1335‘1336
00503/ 1335 1336
00522/ 3346 3340
00530/ 1314 7000:7000:7000
3335

00454/
00455/
00457/
00501/

00535/ 5311
00536/ 3455
00537/ 2055
00540/ 2056
00546/ 7402
00554/1267

3314
5311
1455

7402:345677402:131473455:2055
7OOO;2056;5333:620175715:l360
3301:1360y330335260:1276

SOFTWARE PRODUCT

VERSION

OS/ 8

VERSION

COMPONENT

BAS IC
SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

22*
NEW

PAGE
OF

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

Digital

Software News

March 1976

BCOMP/K Switch (SPR 8-1776)

02524/

XXXX

1323:3727:5730:7746:7315

02632/

0302

0355g3356:1356:3410:1356:7041

02755/ xxxx 7400:0000
02761/ 7315 2524
fc
,SAVE SYS BLOAD

This

patch supersedes
.

GET SYS

all other

BCOMP/K patches.

BASIC

DOD

l322/xxxx

2321

TC
.SA

SYS

BASIC

This raises the BASIC SYSTEM to patch level

20.

SOFTWARE PRODUCT

VERSION

OS / 8

COMPONENT

VERSION

BASIC

SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

22*
NEW

[Z::]

REPLACEMENT ARTICLE

PAGE
OF

ORIGINAL DATE

March 1976

Digital

Software News
March 1976

Cannot Move BATCH

Input File

(SPR 8-1732)

running BATCH, moving the BATCH input file is not permitted.
In particular, the device containing the BATCH input file should
not be SQUISHed.
Moving the BATCH input file while BATCH is
running will lead to unpredictable results.

When

addition, moving SYS:BATCH.SV while

BATCH

running must be

avoided.
If it is necessary to

SQUISH SYS under BATCH, place BATCH input

beginning of

file at the

SYS

it will not

move.

VERSION

SOFTWARE PRODUCT

OS/8
COMPONENT

VERSION

V5A

BATCH

SUBPROGRAM OR ADDITIONAL INFORMATION

OS/8

Handbook

NEW

DEC-SS-OSHBA-A-D
REPLACEMENT ARTICLE

SEQUENCE

PAGE
OF

ORIGINAL DATE

February 1976

Digital

Software News

March

Edit Command

Incorrectly Handled

1976

(SPR 8—1712)

PROBLEM:

CCL does

The

patch

not

for

handle

this

the Edit Command

problem has

correctly.

been withdrawn.

SOFTWARE PRODUCT

VERSION
U

OS/8
COMPONENT

VERSION
VD

CCL

SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

5
NEW

[:I

REPLACEMENT ARTICLE

PAGE
OF

l
ORIGINAL DATE

January 1976

Digital

Software News

March 1976

Output

at End of Pass

PROBLEM :

/M switch
symbol at the

The

to CREF

sometimes

end of pass

produces output

after the last

good

With certain memory restrictions
and certain size listings, CREF
shuffles the references during pass 1, overwriting the permanent

symbols whose

names

occur

in the

alphabet

however, thinks these permanent symbols

consequently meaningless output

later than LG.

are

still there,

CREF,
and

printed.

DISPOSITION:

following patch shortens the permanent symbol table of CREF
during pass 1 of a mammoth listing so as to only include permanent
This patch updates CREF Version 3A to CREF
symbols up to LG.
The

Version 3B:
.GET

SYS

CREF

.ODT

2576/fllfil lfl2
4353/xxxx l356;3fl42;5235;35
45¢7/5767 5755
4555/xxxx 4353
IC
.SAVE

SYS

CREF

SOFTWARE PRODUCT

VERSION

OS/8
COMPONENT

VERSION

CREF

V3A

SUBPROGRAM OR ADDITIONAL INFORMATION

NEW

REPLACEMENT ARTICLE

PAGE
OF

SEQUENCE

ORIGINAL DATE

March 1976

Software News

Digital

March 1976

Output

at End

of Pass

Although this patch solves some CREF problems, there may be others.
user encountering one Should save the source or listing file
which causes the problem and send an SPR with the following

Any

information:

amount of memory used during the fatal CREF
the version number of CREF used (or the listing)

the

type of system device and output device used
complete set of switches passed to CREF

SOFTWARE PRODUCT

VERSION

OS/8

COMPONENT

VERSION

V3A

CREF
SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

PAGE
OF

3
NEW

REPLACEMENT ARTICLE

ORIGINAL DATE
March 1976

Digital

Software News

March 1976

Changing

the Number of Lines Per

Page

(SR)

As of

patch A to CREF, when outputting to a terminal, CREF always
These dashes are always
produces dashes at the end of each page.
a fixed distance away from each other,
thereby permitting the
user to cut along the dashes and thus create a booklet with pages
of the

same

size.

However, some users may be using terminals which take paper
which already has creases in it to form pages. In such cases, it
would
be nice to have the page size output by CREF be the same as
If the default page size currently
physical page size.
by CREF is not adequate, the user can change this size by
These locations
modifying both locations 77 and 2564 in CREF.SV.
For example,
affect the page size and are currently set to 77¢6.
if you want two more lines per page, then the following patch
will accomplish this:

the users

used

.GET

SYS

CREF

.ODT

77/77E6 77fl4
2564/77fi6 77fl4
IC
.SAVE

Note:

This

SYS

patch does

CREF

not

apply

08/8

V3C

CREF V4

(i.e.,

SOFTWARE PRODUCT

VERSION

OS/8

COMPONENT

VERSION

SEQUENCE

4*
NEW

REPLACEMENT ARTICLE

PAGE
OF

ORIGINAL DATE

later).

CREF
SUBPROGRAM OR ADDITIONAL INFORMATION

March 1976

Digital

Software News

March 1976

FIXMRI

(SR)

Patch to CREF

PROBLEM:

circumstances, if the first symbol defined

In certain

line

pseudo-op has fewer than five characters in
following
later date in the CREF output CREF will
some
then
at
its name,
an
erroneous
symbol followed by a large number of spurious
output
FIXMRI

references.

ANALYSIS:

The FIXMRI processor

after

collecting

in CREF

symbol

fails to call

the RESET subroutine

name.

DISPOSITION:

The

following patch corrects

this

CREF

problem and updates

from

V3B to CREF V3C:

SYS

.GET

CREF

.ODT

2576/fllfl2 lfl3
6fll6/lfl36 531$
6llfl/Xxxx 47l3;lfl36;5217;74l
TC
.SAVE

SYS

CREF

VERSION

SOFTWARE PRODUCT

08/8
COMPONENT

VERSION

CREF

V3B

SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

PAGE
OF

NEw

REPLACEMENT ARTICLE

ORIGINAL DATE

[II

I:]

March 1976

Software News

Digital

March 1976

FIXMRI

Patch to CREF

(SR)

REMARKS:

believe that with patches B and C, we have solved all problems
in which CREF listings blow up with a large number of erroneous
Users knowing of any such problems which these patches
references.

do not

remedy should send

DIGITAL

listing file which exhibits

the

tape containing the

problem.

VERSION

SOFTWARE PRODUCT

08/8

VERSION

COMPONENT

V3B

CREF
SUBPROGRAM OR ADDITIONAL INFORMATION

PAGE
OF

SEQUENCE

5*
NEW

source

REPLACEMENT ARTICLE

ORIGINAL DATE

[:1

March 1976

Software News

Digital

March 1976

Dollar

Sign Patch

CREF

(SR)

PROBLEM :

device is

When the CREF output

terminal, there

several

are

cases

wherein CREF will get the line count wrong, thus producing the
In the worst cases, CREE may
wrong number of lines per page.
the listing but before the
feeds
after
thousands
of
line
produce
CREF

references.
in certain
dollar
SABR

Two

cases

RALF

in other

the

causes

listing

example,

where there

are

the

are:

file does
source

contain

not

language

was

cases

with

which

where

when

for

sign;

of the known

many lines in the listing file
character in column one. (This

alphabetic
begin
happen in the case of SABR and RALF code but can also
happen with PAL listings which contain a large number of
error messages.)
an

can

ANALYSIS:

When

SABR),

$ is present
control

code at this dollar
of CREE which

(or

END

statement in the

keep

sign processor is crucial
track of the line court.

case

The

fails to transfer to location DOLLl.

other

portions

beginning with an alphabetic character is found,
properly ignores the line and increments the line count
one.
However, it increments this line count during non—
by
listing passes too, thus making the line count wrong.

When

line

CREF

SOFTWARE PRODUCT

VERSION

05/8
COMPONENT

VERSION

V3C

CREF
SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

6*
NEW

PAGE
OF

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

Software News

Digital

March 1976

Dollar

Sign Patch

(SR)

CREF

DISPOSITION :

All
at

instructions which increment the line counter must be zeroed
the end of Pass

solving

the

following patch does this, thereby
This patch upgrades CREF to version 3D.

one.

problem.

.GET

SYS

The

CREF

.ODT

fllfl7/xxxx
3242/5564
3355/xxxx
5623/3776
2576/fllfl3
IC

3512;3513;55fl6;413;43l
5355

4lfi6;5564
4lfl6
lfl4

.SAVE

SYS

CREF

SOFTWARE PRODUCT

VERSION

08/8

COMPONENT

VERSION

CREF
SUBPROGRAM 0R ADDITIONAL INFORMATION

v3c

6*
NEW

REPLACEMENT ARTICLE

PAGE
OF

SEQUENCE

ORIGINAL DATE

March 1976

Digital

Software News
March 1976

JSW Patch to

CREF

(SR)

PROBLEM :

unused bits

in the 08/8 Job Status WOrd.

CREF

incorrectly

This

is not very serious and should not affect most

sets

users.

DISPOSITION :

This

patch fixes
.GET

the

problem and upgrades

SYS

CREF

from V3D to V3E:

.ODT

2576/fllfl4 lflS
43flfl/fll45 2fil;ll44
IC
.SAVE

Note:

SYS

CREF

This problem has already been fixed in CREF V4

SOFTWARE PRODUCT

VERSION

OS/8

COMPONENT

VERSION

CREF
SUBPROGRAM OR ADDITIONAL INFORMATION

V3D
SEQUENCE

7*
NEW

(OS/8 V3C).

REPLACEMENT ARTICLE

PAGE
OF

ORIGINAL DATE

March 1976

Digital

Software News
March

Long Line Patch to CREF

1976

(SR)

PROBLEM:

correctly truncates
output a carriage
However, it fails
characters from the end.
return at tre end of the line in the CREF liSting.
If

line

listing file is

too

long,

CREF

ANALYSIS:

Once

ignores all further
in the line, including the carriage return.

the line buffer

characters

fills up,

CREF

DISPOSITION:
the

problem by changing the way CREF forms
new algorithm is to ignore the carriage return
The
line.
output
in the input line, and upon encountering the end of the input line,
the output line
to move both a carriage return and a line feed to
This patch upgrades CREF to V3F.
buffer.
This

patch corrects

.GET

the

SYS

CREF

.ODT

2576/fllfl5
3254/765fl
3256/lfllfl
3264/lfl23

lfl6
745g
1161;7650;5273;1fllfl;l372;77flfl
5267;1fl23;45fl4;lfl23;lll4

fill4/xxxx

7564

.SAVE

CREF

SYS

SOFTWARE PRODUCT

VERSION

OS /8
COMPONENT

VERSION

CREF
SUBPROGRAM OR ADDITIONAL INFORMATION

V3E
SEQUENCE

8*
NEW

REPLACEMENT ARTICLE

PAGE
OF

ORIGINAL DATE

Software News

Digital

March 1976

Long Line Patch

Note:

CREF

(SR)

considers carriage return to mean end—of—input line and
This was part of the
ignores linefeeds in the input line.
CREF design and this patch does not alter this algorithm.

CREF

SOFTWARE PRODUCT

VERSION

OS / 8

COMPONENT

VERSION

V3E

CREF
SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

PAGE
OF

8*
NEW

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

Digital

Software News

March 1976

DEXP Function Restriction

(SPR 8—1363)

PROBLEM:

function returns

The DEXP

for arguments

constant result

>88.®28.

function in this range do not return the original
when used in their inverse functions LOG or DLOG.

Values of the

argument

DISPOSITION:

There

erroneous

restriction

programmed into the DEXP function.
a simple source change :

Correction of this problem requires

the code

Remove

through
2.
3.

Remove

the

instruction at DEX2+1.

Change

the

instruction at DEX2+2

new

FORTRAN

new

DEXP.RL module

library using

using

RALF

and

VERSION

OS /8
COMPONENT
FORTRAN

FORLIB

VERSION

SUBPROGRAM OR ADDITIONAL INFORMATION

[:l

insert it into

LIBRA.

SOFTWARE PRODUCT

NEW

read

DEX4

Assemble the

from locations DEXLIM

DEXLIM+6.

REPLACEMENT ARTICLE

PAGE
OF

SEQUENCE

1
ORIGINAL DATE

January 1976

Software News

Digital

March 1976

Floppy Disk Bootstrap

The

following is

To boot

enter

RXOl

these

the

bootstrap for the RXOl floppy disk.
system that does not have hardware bootstrap,

instructions and start at location 33.

¢¢24
¢¢25
¢¢26

7126

/ORIGIN of bootstrap

*24

¢¢24

Boot,

RTL

STL

1¢6¢

TAD UNIT

6751

LCD

¢¢27
¢¢3E
¢¢3l
¢¢32

72¢l
4¢53
4fi53
71¢4

CLA

IAC

JMS

LOAD

JMS

LOAD

¢¢33
¢¢34
¢¢35
¢¢36
¢¢37

6755

HANGG,

CLL RAL

Start,

¢¢4¢
$941
¢¢42
¢¢43
¢¢44
¢¢45
¢¢46
¢¢47
¢¢5¢
¢¢51
¢fl52

SDN

LOAD +1

/GET a READ command on
/The proper unit and load it
/into the command register

/READ SECTOR ONE
/OF TRACK ONE.
/SET AC=2 as flag saying
/We read Track 1

/**Bootstrap start address**
/D0 a figure—8 Skip
-

will

/DONE flag
up
/ANY ERRORS?
/OR is this the initial dummy
/wait?

5¢54

JMP

6754

SER

745E
7619

SKP CLA

SD46

JMP GOODRD

1060

TAD UNIT

/GO READ the sector buffer
/Come here on read errors

CIA

/Flip the unit number

SNA

7fi41
1¢61
3fl6¢
5¢24

TAD

X6¢3¢

come

/Ih "unit"

DCA unit
JMP

6751

GOODRD,

LCD

4053

LP,

JMS

3¢¢2
2¢5¢
5fl47

Boot

Load

DCA BOOTST

ISZ.-l

[Load the empty sector buffer
/Get a word from sector buffer

/Secondary Boot Loads
/Bump store address

JMP LP

¢¢53
¢¢54

fifififl
6753

STR

¢¢55
¢¢56

5033

JMP HANGG

6752

XDR

¢¢57
¢¢6¢
¢¢6l

5453

JMP

Load.

7024

UNIT,

6fi3¢

X6639,

/Do a figure—8 loop waiting
/for transfer
/OR DONE flags to come up
TRANSFER.
/TRANSFER flag up
-

LOAD

79'24
6¢3g

DRIVE
DRIVE ,0, 7,024
/7fl,@4
/Constant needed to flip unit
—7¢¢4 + 7¢24
=

SOFTWARE PRODUCT

VERSION

08/8
COMPONENT

VERSON

PUMNDIJERS
SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

PAGE
OF

RXOl
NEW

into LOCS.3—Sl

REPLACEMENT ARTICLE

ORIGINAL DATE

January 1976

word

Digital

Software News
March 1976

Optional

Patch to NULL Handler

The NULL handler,
an

input,

immediate end of file.

(SR)

the user buffer and signals
OS/8 CUSPs, especially those
(e.g., TECO), expect to find a CTRL/Z
zeroes

Some

expecting only ASCII input
in the input buffer, even after an
The

end of

following optional patch changes
a CTRL/Z at the beginning of

inserts

file.

NULL

the

user

that

input

buffer and

zeroes

the remainder of the buffer:

.RUN

SYS

BUILD

SALTER RF,g

flfififl/232
slrc
.SAVE

SYS

BUILD

This patch does not change the NULL version number since
patch is optional and is probably not needed by the average

Note:

the
user

VERSION

SOFTWARE PRODUCT

08/8

COMPONENT

VERSION

HANDLERS
SUBPROGRAM 0R ADDITIONAL INFORMATION

NULL Handler
NEW

jREPLACEMENT ARTICLE

PAGE
OF

SEQUENCE

10*

ORIGINAL DATE

February

1976

Digital

Software News
March 1976

Patchable Location in Null Handler

The Null handler

can

the user's buffer.

and returns
To

cause

change
to

Some

be
As

patched to permit it to insert a CTRL/Z in
distributed, NULL merely zeroes the buffer

end-of—file.

NULL to

insert

the relative loca

232.

applications require this patch.

For

the command

example,

.MUNG NULL:

will not work without it.

SOFTWARE PRODUCT

VERSION

OS/8

COMPONENT

VERSION

HANDLERS
SUBPROGRAM OR ADDITIONAL INFORMATION

Null Handler
NEW

SEQUENCE

PAGE
OF

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

Digital

Software News
1976

March

KS33 Use of Up-Arrow

The

(SR)

description of the low speed reader
The
08/8 Handbook is incorrect.

of the
page

G-2

should read

handler

(K833)

sentence

the

appendix

top

follows:

The

operation of this handler is exactly the same as +‘hat for the
high speed reader/punch except that after the up—arrow is printed,
operator need do is load the paper tape in the reader and
on.
There is no need for the operator to strike a
character on the keyboard.

all

the

then turn it

SOFTWARE PRODUCT

VERSION

O§/ 8
COMPONENT

HANDLERS

VERSION

(K533 Handler)

SUBPROGRAM OR ADDITIONAL INFORMATION

OS/8 Handbook
NEW

DEC-SB-OSHBA-A—D

SEQUENCE

PAGE
OF

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

Digital

Software News

March 1976

Trouble With Clock Queue

(SR)

PROBLEM :

a new entry is being added to
entry is incorrectly added to the

clock entry times out while

active list, then the
free list instead.

the

new

SOLUTION :

This

very infrequently;
change fixes this problem:

(a)

occurs

location GETICK+5 place
DCA

should

This

the

source

instruction

CLIPTR

fall

the

between

instruction

the

and

(b)

however, the following

location CLKQT+4

152

add

instruction

DCA

CLKXR

the

instructions

STA
DCA

Note:

This

should

and

TAD

This

problem

task

/PUT

CLIPTR

fall

between

the

-1

BACK

instructions

POSTDS

(CLKEF
has

RTS—8

already been fixed in

version

the

CLOCK

SOFTWARE PRODUCT

VERSION

RTS-8
COMPONENT

VERSION

Clock Task
SUBPROGRAM OR ADDITIONAL INFORMATION

1
NEW

PAGE
OF

SEQUENCE

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

Digital

Software News

March 1976

Some

Time—Of—Day Requests

Run

24 Hours Late

(SR)

time—of-day is specified using an @ on an MCR Request command
day than the time the request is entered,
then the task requested to run is supposed to run at the specified
time but on the following day.
This in fact does not happen.
The
a

which is earlier in the

MCR will

schedule the task to

24 hours

later

less, depending

The

following

and

corrects

After

incorrect time which is

This incorrect time may be

the value of HERTZ and SHERTZ.)

change should
problem:

be made

replace

SAVTIM—l,

locationTENCNT

FUDGE,

source

the

location

run

than the desired time.

insert

CDF

the

the file MCR.PA

CUR

following

JMS

(FUDGE

code:

fl
CDF

CUR

SZL
JMP

TAD

JMS

JMP

/DID THE LAST SUBTRACT
FUDGE
/NO, RETURN
(FUDGEL /YES
(DBLSUB /SUBTRACT 24 HOURS
FUDGE
/RETURN

OVERFLOW?

VERSION

SOFTWARE PRODUCT

RTS—8

COMPONENT

VERSION

MCR
SUBPROGRAM OR ADDITIONAL INFORMATION

1*
NEW

PAGE
OF

SEQUENCE

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

Digital

Software News
March

1976

Using 08/8 Support

system containing the 08/8 Support Task must be
loaded from 08/8; that is, the binary cannot be punched out

RTS—8

paper

tape and then loaded

However,
binary loader.
run without 08/8.

the

08/8

bare machine with the

file

Support Task

can

running the 08/8 Support Task, the background 08/8
system device must be the same as the 08/8 system device used
by the 08/8 system which is loading RTS—8.

When

There

run

08/8

If it
minor problem with the 08/8 Support Task.
machine in which all but 4K is used by 08/8 and

uses

least

12K, then the

EXIT

command of the MCR

To solve this problem temporarily,
will not work properly.
hit HALT on the console and then manually rebootstrap into

08/8

to return

08/8.

in the background, assign at least 12K (three
Be especially sure that none of these
08/8.
fields assigned to OS/8 are used by any RTS—8 tasks.

run

fields)

BATCH
to

SOFTWARE PRODUCT

VERSION

RTS -8
COMPONENT

VERSION

08/8 Support Task
SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

PAGE
OF

1
V

NEW

REPLACEMENT ARTICLE

ORIGINAL DATE

February 1976

Software News

Digital

March 1976

Partition With WAITM

Cannot Free

Under RTS—8 Version 2,
able

free

major

there

partition

when

for

provision

it executes

task to be

WAITM.

This

is to

permanent restriction under V2 since it requires
chance to the Executive to include such a capability.

be considered
a

its

(SR)

SOFTWARE PRODUCT

VERSION

RTS-8
COMPONENT

VERSION

Executive
SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

1
NEW

PAGE
OF

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

Digital

Software News

March 1976

Some

Time-Of—Day Requests Run

24 Hours Late

(SR)

If a time—cf~day is specified using an @ on an MCR Request command
which is earlier in the day than the time the request is entered,
then the task requested to run is supposed to run at the specified

time but

MCR will

schedule the task to

24 hours

later than the desired time.

the

following day.

run

less, depending on the value of
The

following

location

SAVTIM‘l,

This incorrect time may be

SHERTZ.)

HERTZ and

replace

location TENCNT

insert

CDF

the

The

happen.

incorrect time which is

change should be made
problem:

the

FUDGE,

source

and corrects

After

in fact does not

This

CUR

the file MCR.PA

JMS

(FUDGE

code:

following

fl
CDF

CUR

SZL
JMP

TAD

JMS

JMP

/DID THE LAST SUBTRACT
/NO, RETURN
(FUDGEL /YES
(DBLSUB /SUBTRACT 24 HOURS
FUDGE
/RETURN

OVERFLOW?

FUDGE

SOFTWARE PRODUCT

VERSION

RTS—8
COMPONENT

VERSION

MCR
SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

PAGE
OF
'

1*
NEW

REPLACEMENT ARTICLE

ORIGINAL DATE

[:3

March 1976

Digital

Software News

March 1976

Using OS/8 Support

system containing the 08/8 Support Task must be
OS/8; that is, the binary cannot be punched out
on paper tape and then loaded on a bare machine with the
RTS—8

loaded from

binary
run

loader.

w1t.out

When

There is

However,

the

OS/8 file Support

Task

can

08/8.

running the 08/8 Support Task, the background OS/8
system device must be the same as the 08/8 system device used
by the 08/8 system which is loading RTS—8.

run

If it
minor problem with the 08/8 Support Task.
machine in which all but 4K is used by 08/8 and

if OS/8 uSes at least 12K,

then the EXIT command of the MCR

will not work properly.
To solve this problem temporarily,
hit HALT on the console and then manually rebootstrap into

OS/8

return

08/8.

in the background, assign at least 12K (three
Be especially sure that none of these
08/8.
fields assigned to 08/8 are used by any RTS—8 tasks.

run

fields)

BATCH

VERSION

SOFTWARE PRODUCT

RTS—8

COMPONENT

08/8 Support

VERSION

Task

SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

PAGE
OF

l
7

NEW

REPLACEMENT ARTICLE

ORIGINAL DATE

February 1976

Digital

Software News

March 1976

Communicating Between 08/8

and RTS—8

08/8 support contains

RTS—8 V2
an

RTS-8 task.

perform this communication,

to have

handler called

anything.

name

The

RTSS

fact,

has been

08/8 support

.RTSS

it can

mechanism by which

the
.

08/8 system must be configured
it need not
can be a dummy;

some

other handler to which the

assigned.

task Will

to write

The OS8COM task does
message

anytime

talk to

can

This

trap all calls

this handler.

arguments which are passed to the RTS—8 handler
will be passed to an RTS-8 task called OSBCOM.

responsibility

OS/8

The

OS/8 program

is the user's

this OS8COM task.
RTS-8 RECEIVE and it will
program reads

then receive

writes to the

RTSB

handler.

This message looks like any other message to a mass storage device.
OS8SUP does make one change to the arguments.
Bits 6 through 8

originally contain the field of the buffer.
When
OS/8 expected the buffer to be.
OSBCOM gets control, these bits give the actual field that contains
the buffer.
OSBCOM can return information to 08/8 through these

of the function word

This

was

the field Where

arguments.

SOFTWARE PRODUCT

VERSION

RTS-8
COMPONENT

08/8 Support

VERSION

Task

SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

3
NEW

PAGE
OF

REPLACEMENT ARTICLE

ORIGINAL DATE

[:1

March 1976

Software News

Digital

March 1976

Deficiency in

TTY Task

PROBLEM :

The TTY task in RTS—8 V2

assumes

When the width of the terminal

oriented;

ically out—uts

coming

that text

it is line

TTY automat—

is exceeded,

rettrr line feed.

carriage

DISPOSITION :

There is
than

4¢95

In order

ASCII

V1 handler

the

way to

use

this handler to out ut

characters not

accomplish this,

line which has

including a line feed.

the

user

is obtained from the V2

must use

source

the V1 handler.

by setting

The

OLDTTY=1 in

parameter file.

SOFTWARE PRODUCT

VERSION

RTS-8
COMPONENT

TTY

VERSION

Task

SUBPROGRAM OR ADDITIONAL INFORMATION

SEQUENCE

1
NEW

PAGE
OF

REPLACEMENT ARTICLE

ORIGINAL DATE

[:3

March 1976

Software News

Digital

1976

March

Subroutine BEGFIX

(RC 8D—718 RE)

6—47, add the following note
concerning the subroutine BEGFIX:

On page

The accumulator must be Cleared before
the AC is not cleared,
the

the

paragraph

referencing

will be

C(AC)

first

loaded

BEGFIX.

into AC2 of

Floating—Point AC.

SEQUENCE

MANUAL NAME

CASSETTE

PROGRAMMING

SYSTEM

USER'S GUIDE

DEC ORDER NO.

DEC—8E-OCASA—A-D
NEW

PAGE

REPLACEMENT ARTICLE

ORIGINAL DATE

March 1976

SOFTWARE PROBLEMS OR ENHANCEMENTS

Questions, problems,
Report (SPR)
avai1ahle

and enhancements to

Digital software

form and mailed to the SPR Center at

From

_-vm

should be reported

of the following

one

Software Performance

Digital Offices:

(SPR forms

\
the spp Ce1&av
:ucL-I
\

Areas

Covered

Australia/New Zealand

SPR Center

Digital Equipment Australia Pty. Ltd.
123-125 Willoughby Road, P.O. Box 491
Crows Nest

Wales, Australia 2065

New South

Digital Equipment Comercio E Industria LTDA
Rua Batatais, 429 (Esq. Al. Campinas)

Brazil

01423-Jardim Paulista
~

Sac

‘11 A—“D—D’anfi
Pau+v
DKWULEQ&L

Digital Equipment of Canada, Ltd.

Canada

Software Services
P.O.

11500; KZH 8K8

Box

Ottawa, Ontario, Canada
Caribbean

Digital Equipment Latin America,

Inc.

407 del Parque Street

France

Rico

Puerto

Santurce,

00912

Digital Equipment France
18,

Saarinen

rue

Centre

Silic

F-94533
Israel

CIDEX L225

Rungis,

France

DEC-sys Computers Ltd.
7 Habakuk Street

IL—Tel Aviv 63505,

Italy

Digital Equipment

Israel
S.P.A.

Corso Garibaldi 49

I—20121 Milano,

Japan

Italy

Digital Equipment Corp. Intl.
Kowa Building 25 (3d Floor)
8-7 Sunban-Cho

Chiyoda-ku, Tokyo 102, Japan
Mexico

Equipo Digital, S.A. de C.V.
109 Concepcion Beistegui
Mexico 12,

The Netherlands

D.F.

Digital Equipment B.V.
Kaap Hoorndreef 38, P.O. Box 9064
NL—Utrecht
Overvecht, The Netherlands
-

Nordic

Digital Equipment AB

Englundavagen 7
S-l7141 Solna
Sweden

Switzerland

Spain
Greece

Romania

United

Portugal
Bulgaria
Yugoslavia

Kingdom

Digital Equipment Corp. SA
20, Quai Ernest Ansermet
Case Postale

23, CH—l211 Geneva 8

Switzerland

Digital Equipment Co.
Fountain House,

GB—Reading
West
East

Germany
Germany

Hungary

Austria

United States;

7QN, England

Digital Equipment GmbH

Mffnchen 4o

Russia

D-8000

Poland

Wallensteinplatz

Czechoslovakia

Far

RG1

West

remainder of

East, Middle East,

Africa, Latin America

Ltd.

Butts Centre

Germany

Software Communications
P.O.

Box F

Maynard,

01754

are

DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASSACHUSETTS 01754

European Headquarters: 81 route de I’Aire, 1211 Geneva 26. Switzerland
Digital Equipment of Canada Ltd., P.O. Box 11500 Ottawa, Ontario K2H8K8.

DIGITAL EQUIPMENT CORPORATION, Component Group Headquarters: 1 Iron Way,

Marlborough, Mass. 01752, Telephone; (617) 48151400

DIGITAL EQUIPMENT CORPORATION, Corporate Headquarters: Maynard,

Massachusetts 01754, Telephone: (617) 897-5111
SALES AND SERVICE OFFICES
DOMESTIC

——

ARIZONA, Phoenix and Tucson

CALIFORNIA, Los Angeles, Monrovia,

Oakland, Ridgecrest, San Diego, San Francisco (Mountain View), Santa Ana, Sunnyvale,
and Woodland Hills 0 COLORADO, Englewood o CONNECTICUT, Fairfield and Meriden
.

DISTRICT OF COLUMBIA, Washington (Latham, Md.) - FLORIDA, Orlando 0 GEORGIA.

Atlanta - ILLINOIS, Chicago (Rolling Meadows) - INDIANA, Indianapolis - IOWA,
o
KENTUCKY, Louisville
LOUISIANA, Metairie (New Orleans)
MASSACHUSETTS, Marlborough and Waltham 0 MICHIGAN, Detroit (Farmington
Hills) 0 MINNESOTA, Minneapolis - MISSOURI, Kansas City and St. Louis 0 NEW

Bettendorf

HAMPSHIRE, Manchester NEW JERSEY, Fairfield, Metuchen and Princeton 0 NEW
MEXICO, Albuquerque NEW YORK, Albany, Huntington Station, Manhattan, Rochester
and Syracuse NORTH CAROLINA, Durham/Chapel Hill
OHIO, Cleveland, Columbus
and Dayton OKLAHOMA, Tulsa
OREGON, Portland PENNSYLVANIA, Philadelphia
(Bluebell) and Pittsburgh TENNESSEE, Knoxville TEXAS, Austin, Dallas and Houston
UTAH, Salt Lake City WASHINGTON, Bellevue WISCONSIN, Milwaukee (Brookfield)
INTERNATIONAL
ARGENTINA, Buenos Aires AUSTRALIA, Adelaide, Brisbane,
Canberra, Melbourne, Perth and Sydney AUSTRIA, Vienna BELGIUM, Brussels
BOLIVIA, La Paz BRAZIL, Puerto Alegre, Rio de Janeiro and $50 Paulo CANADA,
Calgary, Halifax, Montreal, Ottawa, Toronto and Vancouver CHILE, Santiago
DENMARK, Copenhagen FINLAND, Helsinki‘o FRANCE, Grenoble and Paris
0
GERMANY, Berlin, Cologne, Hannover, Hamburg, Frankfurt, Munich and Stuttgart
HONG KONG INDIA, Bombay INDONESIA, Djakarta ISRAEL, Tel Aviv ITALY,
Milan and Turin
JAPAN, Osaka and Tokyo
MALAYSIA, Kuala Lumpur
MEXICO,
Mexico City NETHERLANDS, Utrecht NEW ZEALAND, Auckland
PUERTO RICO, Santurce 0 SINGAPORE
NORWAY, Oslo
PHILIPPINES, ManiIa
SPAIN, Barcelona and Madrid
SWEDEN, Gothenburg and Stockholm
SWITZERLAND, Geneva and Zurich
UNITED
TAIWAN, Taipei and Taoyuan
KINGDOM, Birmingham, Bristol, Dublin, Edinburgh, Leeds, London, Manchester
and Reading
VENEZUELA, Caracas
YUGOSLAVIA, Ljubljana 0

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