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93 Appendix B
B.2 Floppy Drive Connector (FDD1)
Table B.2: Floppy drive connector (FDD1)
Pin Signal Pin Signal
1 GND 2 FDHDIN*
3GND4N/C
5 N/C 6 FDEDIN*
7 GND 8 INDEX*
9 GND 10 MOTOR 0*
11 GND 12
DRIVE SELECT 1*
13 GND 14
DRIVE SELECT 0*
15 GND 16 MOTOR 1*
17 GND 18 DIRECTION*
19 GND 20 STEP*
21 GND 22 WRITE DATA*
23 GND 24 WRITE GATE*
25 GND 26 TRACK 0*
27 GND 28
WRITE PROTECT*
29 GND 30 READ DATA*
31 GND 32 HEAD SELECT*
33 GND 34 DISK CHANGE*
* low active
434
33
3
32
31
1
2