51
Appendix F
Connector Pin Assignments
Connector J1
PS/2 Mouse Connector
Pin
1
2
3
4
5
6
J2 (COM1) and J3 (COM2)
COM 1 and COM 2 Serial Ports
Pin
1
2
3
4
5
6
7
8
9
Function
DCD (Data Carrier Detect)
RX (Receive Data)
TX (Transmit Data)
DTR (Data Terminal Ready)
Ground (Signal Ground)
DSR (Data Set Ready)
RTS (Request to Send)
CTS (Clear to Send)
RI (Ring Indicator)
Connector J4
Floppy Disk Drive Connector
Pin
1
2
3
4
5
6
7
8
9
10
Function
Mouse Data
Reserved
Ground
+5V
Mouse Clock
Reserved
Function
Ground
DENSEL
Ground
Reserved
Ground
Drate0
Ground
Index
Ground
MTR0
Pin
11
12
13
14
15
16
17
18
19
20
Function
Ground
DR1
Ground
DR0
Ground
MTR1
Drate1
Dir
Ground
Step