IBM PS/1 User Manual

Pin
A
Signal
Name
Pin
B
I/O
116 Ground
117 Ground
118 Ground
119 +5 V dc
120 +5 V dc
Video Feature
Pin Signal Name I/O Pin Signal Name I/O
1 Pixel Data 0 I 14 No Connection
2 Ground 15 Pixel Data 7 I
3 Pixel Data 1 I 16 Ground
4 Ground 17 Pixel Clock I/O
5 Pixel Data 2 I 18 Ground
6 Ground 19 Blanking
7 Pixel Data 3 I 20 Ground
8 Enable Ext Pixel
Data
O 21 Horizontal Synch
22 Ground
9 Pixel Data 4 I
23 Vertical Synch
10 Enable Ext Synch O
24 No Connection
11 Pixel Data 5 I
25 Ground
12 Enable Ext Pixel
Clock
O
26 No Connection
13 Pixel Data 6 I
5-28

IBM PS/1 Specifications

General

Processor	Intel 80286 or 80386
Processor Speed	10 MHz (80286)
RAM	1 MB (expandable to 2 MB or more)
Storage	40 MB hard drive
Floppy Drive	3.5" 1.44 MB
Graphics	VGA
Ports	Serial, Parallel, Mouse