System board connector pin signals, Monitor port signals, Serial port signals – IBM MICRO TOWER 2169 User Manual
Page 138: Parallel port signals
136
System Board Connector Pin Signals
Monitor Port Signals
Pin Signal Name
I/O
Pin Signal Name
I/O
1
Red Video
O
9
+5 V dc
N/A
2
Green Video
O
10
Synch Ground
N/A
3
Blue Video
O
11
No Connection
N/A
4
No Connection
N/A
12
Monitor ID Bit 1
I
5
Synch Ground
N/A
13
Horizontal Synch
O
6
Red Ground
N/A
14
Vertical Synch
O
7
Green Ground
N/A
15
Monitor ID Bit 3
I
8
Blue Ground
N/A
Serial Port Signals
Pin Signal Name
I/O
Pin Signal Name
I/O
1
Data Carrier
Detect
I
6
Data Set Ready
I
2
Receive Data
I
7
Request To Send
O
3
Transmit Data
O
8
Clear To Send
I
4
Data Terminal
Ready
O
9
Ring Indicator
I
5
Signal Ground
N/A
Parallel Port Signals
Pin Signal Name
I/O
Pin Signal Name
I/O
1
Strobe
O
14
Auto Feed
N/A
2
Data Bit 0
I/O
15
Error
I
3
Data Bit 1
I/O
16
Initialize
O
4
Data Bit 2
I/O
17
Select (In)
O
5
Data Bit 3
I/O
18
Ground
Power
6
Data Bit 4
I/O
19
Ground
Power