IBM-PC Parallel Printer Port

11:22 AM // 0 comments // Sajib Barua // Category: Interfacing //

Registers & Pinouts

Registers (- unavailable)

Pinouts

Signal Name Bit Pin Direction

=========== ======== ===== =========

-Strobe ¬C0 1 Output

+Data Bit 0 D0 2 Output

+Data Bit 1 D1 3 Output

+Data Bit 2 D2 4 Output

+Data Bit 3 D3 5 Output

+Data Bit 4 D4 6 Output

+Data Bit 5 D5 7 Output

+Data Bit 6 D6 8 Output

+Data Bit 7 D7 9 Output

-Acknowledge S6 10 Input

+Busy ¬S7 11 Input

+Paper End S5 12 Input

+Select In S4 13 Input

-Auto Feed ¬C1 14 Output

-Error S3 15 Input

-Initialize C2 16 Output

-Select ¬C3 17 Output

Ground - 18-25 -

(Note again that the S7, C0, C1 & C3 signals are inverted)

IBM-PC Parallel Printer Port Female DB-25 Socket external Pin layout

______________________________________________________

/ \

\ 13 12 11 10 9 8 7 6 5 4 3 2 1 /

\ /

\ 25 24 23 22 21 20 19 18 17 16 15 14 /

\________________________________________________/

So it's also the Pin layout on the solder side of the Male DB-25 Cable Connector that plugs into it.

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