Diskette Drive Cable Connector Signals

Pin

Signal

I/O

Pin

Signal

I/O

Name

Name

 

 

 

 

 

 

 

 

 

 

1

Ground

 

18

Direction

0

 

 

 

 

 

 

2

Density

O

19

Ground

 

 

Select

 

 

 

 

 

 

 

 

 

 

3

No

 

20

Step

O

 

Connection

 

 

 

 

 

 

 

 

 

 

4

No

 

21

Ground

 

 

Connection

 

 

 

 

 

 

 

 

 

 

5

Ground

 

22

Write Data

O

 

 

 

 

 

 

6

No

 

23

Ground

 

 

Connection

 

 

 

 

 

 

 

 

 

 

7

Ground

 

24

Write Enable

O

 

 

 

 

 

 

8

Index

I

25

Ground

 

 

 

 

 

 

 

9

Ground

 

26

Track 0I

I

 

 

 

 

 

 

10

Motor Enable

O

27

Ground

 

 

0

 

 

 

 

 

 

 

 

 

 

11

Ground

 

28

Write Protect

I

 

 

 

 

 

 

12

Drive Select

O

29

Ground

 

 

1

 

 

 

 

 

 

 

 

 

 

13

Ground

 

30

Read Data

I

 

 

 

 

 

 

14

Drive Select

O

31

Ground

 

 

0

 

 

 

 

 

 

 

 

 

 

15

Ground

 

32

Select Head

O

 

 

 

 

1

 

 

 

 

 

 

 

16

Motor Enable

O

33

Ground

 

 

1

 

 

 

 

 

 

 

 

 

 

17

Ground

 

34

Diskette

I

 

 

 

 

Change

 

 

 

 

 

 

 

Parts/Test Point Locations 129

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Image 163
IBM 2274 manual Diskette Drive Cable Connector Signals