Diskette Drive Cable Connector Signals - IBM PC 300 Maintenance Service Manual

Diskette Drive Cable Connector Signals

Pin Signal Name
1 No Connection
2 Density Select
3 No Connection
4 High Density Out
5 Ground
6 No Connection
7 Ground
8 Index
9 Ground
10 No Connection
11 Ground
12 Drive Select 1
13 Ground
14 No Connection
15 Ground
16 Motor On
17 Ground
I/O Pin Signal Name
N/A 18 Direction SELECT
O 19 Ground
N/A 20 Step
I 21 Ground
N/A 22 Write Data
N/A 23 Ground
N/A 24 Write GATE
I 25 Ground
N/A 26 Track 0
N/A 27 Ground
N/A 28 Write Protect
O 29 Ground
N/A 30 Read Data
N/A 31 Ground
N/A 32 SIDE 1 SELECT
O 33 Ground
N/A 34 Diskette Change
I/O
O
N/A
O
N/A
O
N/A
O
N/A
I
N/A
I
N/A
I
N/A
O
N/A
I
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