Floppy cable (Bus) 34pin

Pin Signal Pin Signal X

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1 - GND 2 - N/C

3 - GND 4 - N/C

5 - GND 6 - N/C

7 - GND 8 - Index

9 - GND 10 - Motor Enable A 16

11 - GND 12 - Drive Select B 14

13 - GND 14 - Drive Select A 12

15 - GND 16 - Motor Enable B 10

17 - GND 18 - Stepper Direction

19 - GND 20 - Step Pulse

21 - GND 22 - Write Data

23 - GND 24 - Write Enable

25 - GND 26 - Track 0

27 - GND 28 - Write Protect

29 - GND 30 - Read Data

31 - GND 32 - Select Head 1

33 - GND 34 - (Spare)

HARD DISK CABLES - ST-506 Hard Disk Drive Control/Data Cables

Pin Signal Pin Signal

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1 - Head Select 8 2 - GND

3 - Head Select 4 4 - GND

5 - Write Gate 6 - GND

7 - Seek Complete 8 - GND

9 - Track 0 10 - GND

11 - Write Default 12 - GND

13 - Head Select 1 14 - GND

15 - Reserved 16 - GND

17 - Head Select 2 18 - GND

19 - Index 20 - GND

21 - Ready 22 - GND

23 - Step 24 - GND

25 - Drive Select 1 26 - GND

27 - Drive Select 2 28 - GND

29 - Drive Select 3 30 - GND

31 - Drive Select 4 32 - GND

33 - Direction In 34 - GND

ST-506 Data Cable

Pin Signal Pin Signal

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1 - Drive Selected 2 - GND

3 - Reserved 4 - GND

5 - Reserved 6 - GND

7 - Reserved 8 - GND

9 - Reserved 10 - GND

11 - GND 12 - GND

13 - MFM Write Data+ 14 - MFM Write Data-

15 - GND 16 - GND

17 - MFM Read Data+ 18 - MFM Read Data-

19 - GND 20 - GND