IBM 5150 Hardware Reference Manual

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5-1/4" Diskette Drive Adapter
External Interface Specifications
REAR PANEL
37 PIN '0' SHELL
CONNECTOR
o
1 •
• 20 •
•
•
•
•
•
•
•
•
•
•
•
• • 37
o
AT STANDARD TTL LEVELS
Pin no.
Unused 1 ·5
Index 6
..
..
I...
Motor Enable C
7
1""1"
I ...
Drive Select 0
8
....
...
Drive Select C
9
I""'"
Motor Enable 0
10
-
.....
I...
Direction (Stepper Motod
11
5%" Diskette
External
.....
...
Step Pulse
12 Drive
Drives
....
Adapter
...
Select Head 1
13
~
...
Write Enable
14
...
Track 0
15
..
..
Write Protect 16
..
..
Read Data
17
..
-
Write Data
18
~-..
....-
Ground
20·37
2-109

IBM 5150 Specifications

General

Processor	Intel 8088
Clock Speed	4.77 MHz
RAM	16 KB - 256 KB
Manufacturer	IBM
Model	5150
Release Year	1981
Storage	5.25-inch floppy drives
Graphics	MDA or CGA
Operating System	IBM PC DOS
Ports	Cassette, keyboard
Expansion Slots	5