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IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)

IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)

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Parallel Printer Adapter <br />

Interface Connector Specifications <br />

REAR PANEL<br />

25 PIN "0"<br />

SHELL CONNECTOR<br />

~ 0<br />

14·<br />

• •<br />

• •<br />

• •<br />

NOTE:<br />

All outputs are software !lenerated, <br />

and all inputs are real time si!lnals <br />

(not latched). <br />

AT STANDARD TTL LEVELS<br />

Signal<br />

AMP<br />

Name<br />

Pin No<br />

- Strobe 1 ...<br />

..... + Data Bit 0 2<br />

....<br />

,<br />

-<br />

..... + Data Bit 1 3<br />

+ Data Bit 2 4<br />

...<br />

+ Data Bit 3 5<br />

r-. -<br />

I ... + Data Bit 4 6 <br />

I"'"<br />

...<br />

.....­<br />

+ Data Bit 5 7<br />

I .... + Data Bit 6 8<br />

...­<br />

I ... + Data Bit 7 9<br />

Printer .....- Parallel Printe<br />

- Acknowledae 10 Adapter<br />

-.... + Busy 11<br />

I..... + P. End (out of Paper) 12<br />

.... -<br />

+ Select 13<br />

- Auto Feed 14 ...<br />

- Error 15 ...<br />

- Initialize Printer 16 ..<br />

...<br />

- Select Input 17 ...<br />

Ground 18·25 ...<br />

..<br />

..<br />

2-69

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