Appendix A. Connector pin assignments
Serial port connector
1
5
6
9
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
