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Appendix A. Connector pin assignments
Serial port connector
1
5
69
Parallel port connector
13
1
25
14
Figure 29 (Page 2 of 2). Mouse port connector pin assignments
Pin Signal I/O Pin Signal I/O
5 Clock I/O 6 Reserved NA
Figure 30. Keyboard port connector pin assignments
Pin Signal I/O Pin Signal I/O
1 Keyboard data I/O 2 Mouse data I/O
3 Ground NA 4 +5 V DC NA
5 Keyboard clock I/O 6 Mouse clock I/O
Figure 31. Serial Port Connector Pin Assignments
Pin Signal I/O Pin Signal I/O
1 Data carrier detect I 2 Receive data# I
3 Transmit data# O 4 Data terminal read O
5 Ground NA 6 Data set ready I
7 Request to send O 8 Clear to send I
9 Ring indicator I
Figure 32 (Page 1 of 2). Parallel port connector pin assignments
Pin Signal I/O Pin Signal I/O
1 STROBE# I/O 2 Data bit 0 I/O
3 Data bit 1 I/O 4 Data bit 2 I/O
5 Data bit 3 I/O 6 Data bit 4 I/O
7 Data bit 5 I/O 8 Data bit 6 I/O
9 Data bit 7 I/O 10 ACK# I
11 BUSY I 12 PE I
13 SLCT I 14 AUTO FD XT# O
15 ERROR# I 16 INIT# O
17 SLCT IN# O 18 Ground NA
19 Ground NA 20 Ground NA
21 Ground NA 22 Ground NA
34 Technical Information Manual