B.2 Floppy Drive Connector (FDD1)
33
34
Table B.2: Floppy drive connector (FDD1)
Pin
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
* low active
31
32
Signal
GND
GND
N/C
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
Pin
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
93
3
1
4
2
Signal
FDHDIN*
N/C
FDEDIN*
INDEX*
MOTOR 0*
DRIVE SELECT 1*
DRIVE SELECT 0*
MOTOR 1*
DIRECTION*
STEP*
WRITE DATA*
WRITE GATE*
TRACK 0*
WRITE PROTECT*
READ DATA*
HEAD SELECT*
DISK CHANGE*
Appendix B