IBM 5150 Hardware Reference Manual

5-1/4" Diskette Drive Adapter
Internal Interface Specifications
34 PIN KEYED
EDGE CONNECTOR
NOTE: LANDS 1-33 ARE ON THE BACKSIDE
OF THE BOARD, LANDS 2-34 ARE ON THE
FRONT, OR COMPONENT SIDE.
COMPONENT
SIDE
AT STANDARD TTL LEVELS
.....
"'"
...
...
...
IBM 5 1/4"
"'"
...
Diskette
"'"
.....
Drives
...
...
...
.....
...
.....
...
...
"'"
Ground-Odd Numbers
Unused
Index
Motor Enable A
Drive Select B
Drive Select A
Motor Enable B
Direction (Stepper Motor!
18
Step Pulse
Write Data
Write Enable
Track 0
Write Protect
Read Data
Select Head 1
Unused
Land No.
1-33
2,4,6
8
---..
...
10
12
14
16
5 1/4" Diskett
e
Drive
Adapter
20
22
24
26
..
...
28
...
..
30
...
...
32
34
2-108

IBM 5150 Specifications

General

Brand	IBM
Model	5150
Category	Desktop
Language	English