
148 I/O Ports and Connectors
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PS/2-Compatible Keyboard and Mouse Connectors
The PS/2-compatible keyboard and mouse cables attach to 6-pin, miniature DIN connectors.
Figure B-4 illustrates the pin numbers for these connectors and Table B-4 defines the pin
assignments for these connectors.
Figure B-4. Keyboard and Mouse Connector Pin Numbers
Table B-3. Parallel Connector Pin Assignments
Pin Signal I/O Definition
1 STB# I/O Strobe
2 PD0 I/O Printer data bit 0
3 PD1 I/O Printer data bit 1
4 PD2 I/O Printer data bit 2
5 PD3 I/O Printer data bit 3
6 PD4 I/O Printer data bit 4
7 PD5 I/O Printer data bit 5
8 PD6 I/O Printer data bit 6
9 PD7 I/O Printer data bit 7
10 ACK# I Acknowledge
11 BUSY I Busy
12 PE I Paper end
13 SLCT I Select
14 AFD# O Automatic feed
15 ERR# I Error
16 INIT# O Initialize printer
17 SLIN# O Select in
18–25 GND N/A Ground
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