The Floppy Disk Drivec - Boser HS-6300 Manual

3.7 The Floppy Disk Drive Connector
A standard 34-pin header daisy-chain driver connector provides as
CN13 with following pin assignment. Total two FDD drivers may connect.
CN13 : FDD Connector
PIN NO DESCRIPTION
1 GROUND
3 GROUND
5 GROUND
7 GROUND
9 GROUND
11 GROUND
13 GROUND
15 GROUND
17 GROUND
19 GROUND
21 GROUND
23 GROUND
25 GROUND
27 GROUND
29 GROUND
31 GROUND
33 GROUND
24
PIN NO DESCRIPTION
2 REDUCE WRITE
4 N/C
6 N/C
8 INDEX#
10 MOTOR ENABLE A#
12 DRIVE SELECT B#
14 DRIVE SELECT A#
16 MOTOR ENABLE B#
18 DIRECTION#
20 STEP#
22 WRITE DATA#
24 WRITE DATA#
26 TRACK 0#
28 WRITE PROTECT#
30 READ DATA#
32 SIDE 1 SELECT
34 DISK CHANGE#