IBM 6268, 6288, 6278 manual drive, Power, Diskette, connector, supply, A. Connector, Signal

Appendix

A. Connector

pin

assignments

Figure

23

(Page

2

of

2).

IDE connector pin assignments

Pin

Signal

I/O

Pin

Signal

I/O

15

Data

bus

bit

1

I/O

35

SA0

O

16

Data

bus

bit

14

I/O

36

SA2

O

17

Data

bus

bit

0

I/O

37

CS0#

O

18

Data

bus

bit

15

I/O

38

CS1

O

19

Ground

NA

39

Active#

I

20

Key

(Reserved)

NA

40

Ground

NA

Diskette

drive

connector

Figure

24.

Diskette Drive Connector Pin Assignments

Pin

Signal

I/O

Pin

Signal

I/O

1

Drive

2

installed #

I

2

High

density

select

O

3

Not

connected

NA

4

Not connected

NA

5

Ground

NA

6

Data

rate 0

NA

7

Ground

NA

8

Index#

I

9

Reserved

NA

10

Motor

enable

0#

O

11

Ground

NA

12

Drive

select

1#

O

13

Ground

NA

14

Drive

select

0#

O

15

Ground

NA

16

Motor

enable

1#

O

17

MSEN1

I

18

Direction

in#

O

19

Ground

NA

20

Step#

O

21

Ground

NA

22

Write

data#

O

23

Ground

NA

24

Write

enable#

O

25

Ground

NA

26

Track0#

I

27

MSEN0

I

28

Write

protect#

I

29

Ground

NA

30

Read

data#

I

31

Ground

NA

32

Head

1

select#

O

33

Data

rate 1

NA

34

Diskette

change#

I

Power

supply

connector

Figure

25

(Page

1

of

2).

Power Supply Connector Pin Assignments

Pin

Signal

Name

Pin

Signal

Name

1

+3.3

V

11

+3.3

V

2

+3.3

V

12

−12 V

3

Ground

13

Ground

4

+5

V

14

ON/OFF

5

Ground

15

Ground

6

+5

V

16

Ground

7

Ground

17

Ground

8

PWR

GOOD

18

Reserved

32 Technical Information Manual