IBM PC 300PL manual Drive, Connector, Diskette drive connector pin assignments, Pin Signal name

Appendix A.

Connector

pin

assignments

Figure

21

(Page

2

of

2).

IDE connector pin assignments

Pin

Signal

I/O

Pin

Signal

I/O

9

Data

bus

bit

4

I/O

29

NC

NA

10

Data

bus

bit

11

I/O

30

Ground

NA

11

Data

bus

bit

3

I/O

31

IRQ

I

12

Data

bus

bit

12

I/O

32

CS16#

I

13

Data

bus

bit

2

I/O

33

SA1

O

14

Data

bus

bit

13

I/O

34

PDIAG#

I

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

22. 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

23

(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

Appendix A. Connector pin assignments31