IBM 2274 Personal Computer User Manual


 
Parts/Test Point Locations 129
Diskette Drive Cable Connector Signals
Pin
Signal
Name
I/O Pin
Signal
Name
I/O
1 Ground 18 Direction 0
2 Density
Select
O19Ground
3No
Connection
20 Step O
4 No
Connection
21 Ground
5Ground 22Write DataO
6No
Connection
23 Ground
7 Ground 24 Write Enable O
8 Index I 25 Ground
9 Ground 26 Track 0I I
10 Motor Enable
0
O27Ground
11 Ground 28 Write Protect I
12 Drive Select
1
O29Ground
13 Ground 30 Read Data I
14 Drive Select
0
O31Ground
15 Ground 32 Select Head
1
O
16 Motor Enable
1
O33Ground
17 Ground 34 Diskette
Change
I