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DEC-8L-D0DA-D

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Document:	DW08-A Bus Conversion (Positive) Installation Jul73
Order Number:	DEC-8L-D0DA-D
Revision:	000
Pages:	4
Original Filename:	https://svn.so-much-stuff.com/svn/trunk/pdp8/src/dec/dec-8l-d0d/dec-8l-d0da-d.pdf

OCR Text

DEC-8L-H0DA-D

DW08-A
BUS CONVERSION (POSITIVE) OPTION
INSTALLATION

DIGITAL

INSTRUCTIONS

EQUIPMENT CORPORATION

MAYNARD, MASSACHUSETTS

1st Edition, June 1969

2nd Printing, June 1970
3rd Printing, May 1971

4th Printing, November 1972
5th Printing, July 1973

The material

this

purposes and

subject to change without notice.

Digital
sibility

manual

for informational

Equipment Corporation assumes no responfor any errors which may appear in this

manual.

The following are trademarks of Digital Equipment
Corporation, Maynard, Massachusetts:

DEC

PDP

FLIP CHIP

FOCAL
COMPUTER LAB

DIGITAL
UNIBUS

was a
BUS CONVERSION
[POSITIVE] OPTION
PURPOSE OF OPTION

b. Connections and Installation

The DW08A option provides the PDP-8/L Pro-

cable card either from Table

Determine the proper location for each
1

or from

DEC

grammed Data Processor with the capability of

drawings D-MU-PDP8-L-18 and D-MU-DW08-

using options or peripheral equipment that re-

A-MU (Module Utilization).

quire negative logic levels.

should be fed through the openings in the side

These cables

The DW08A ac power
cable should be plugged into an ac receptacle

of the PDP-8/L frame.

APPLICABILITY

in the rear of the

PDP-8/L.

This installation instruction is applicable to

CAUTION

any properly functioning PDP-8/L.

Use great care when installing the

PARTS LIST

cards in their respective connectors
to prevent breaking either the cards

The parts supplied with this option are listed in
Table

or the connectors.

After all cable cards are installed and the

modules are checked to insure that they are

SPECIAL TOOLS AND TEST EQUIPMENT

properly seated in their connectors, the
Bus Conversion option

DW08A

is ready for testing.

No special tools are required to install this
option.

To verify that the option has been

CHECKOUT PROCEDURE

properly installed, the diagnostic programs
listed in Table 2 of the Installation Instruc-

tions for the specific option are required.

a. Initializing

Before operating the power switch, check

the modules in both the

PDP-8/L and the

DW08A to insure that each module and cable

INSTALLATION PROCEDURE

securely seated in its connector.

Turn the

power switch on the PDP-8/L ON (the switch
key vertical). The computer panel lights will
light in some random pattern, the fans in the
computer will come on, and the Teletype will
come on. (Refer to document DEC-8L-HRZA
for detailed computer checkout if necessary.)

a. Unpacking

The DW08A Bus Conversion option is shipped
in a cardboard box.
Carefully open the box
and remove its contents. Check each item
against the packing memo to insure that all
hardware, software, and cables are there.
The container and packing should be saved in
case it is necessary to return the bus conver-

b. Preliminary

sion option for service.

Since the

The DW08A should be installed in the
H960-B cabinet below the PDP-8/L (or BA08
if present) with a 1-3/4 in. filler panel between them.

DW08A option is not required

unless some other option is connected to it, the

checkout procedure used from this point con-

sists

of testing the other options connected to

the

DW08A.

c. Diagnostic Tests

DW08A Bus Conversion option.

The diagnostic tests for all options connected to the DW08A should be performed at

above tests show problem areas refer to docu-

this time.

ments DEC-8/L-HR1A-D and DEC-8L-HR2A-

the

If the

D for the proper maintenance procedures to be
Th is concludes the installation and testing of

followed in correcting all problems.

Table
List of Parts

[Parts mounted in

Module

Quantity

Required for Option Installation

DW08A Bus Conversion (Positive)]

Use

Type

Number

6
8
1

1
1

Location in

PDP-8/L
Row
Slot

Row

DW08A
Slot

M101
M507

Bus Data Interface

Bus Converter

16-23

M650
M650
M907
M907
M903*
M903
M903
M903
M903

Negative Output Converter
Negative Output Converter
Diode Clamp
Diode Clamp
Connector (Flexprint)
Connector (Flexprint)
Connector (Flexprint)
Connector (Flexprint)
Connector (Flexprint)

7-12
8-15

A
B

D
D
D
C
C

6
7

A(B)

35
34

A(B)

A
A
A
A
A
A
A
A
A
A
A

Locat on in

DF--32

W01 1**

Signal Cable Connector

won

Signal Cable Connector

W01

Signal Cable Connector

won
won
won
won
won
won
won
won

Signal Cable Connector

Signal Cable Connector
Signal Cable Connector
Signal Cable Connector

Signal Cable Connector
Signal Cable Connector
Signal Cable Connector
Signal Cable Connector

Row

Slot

C
C
c
c
c
c
c
c
c
c
c

09
10
11

12
13

14
15
16
17

18
19

M903 is for Flexprint; for coaxial cable use M904.

** W01 1

for coaxial cable; for Flexprint use

W031

Cable length, both input and output, must not exceed 23 ft (14 ft for Flexprint)

NOTE:

See Table 2 of Installation Instructions for specific option connected to the DW08A.

14
15
16

18
19

20
21

22
23