Apple 5.25 Drive: Controller Card Pinouts

The pinouts for the Apple 5.25 Drive controller card are:

Pin # Description
----- -----------
1,2,3 Gnd
4 n/a
5 -12 volts
6 +5 volts
7,8 +12 volts
9 Drive 2 Select
10 Write Protect Input
11 Stepper Motor Phase 0
12 Stepper Motor Phase 1
13 Stepper Motor Phase 2
14 Stepper Motor Phase 3
15 Write Request
16 n/a
17 Drive 1 Select
18 Read Data
19 Write Data