IBM PSB Form Factor Board SAGP-845EV - Manual (Page 10)

10
3.1 Floppy Disk Drive Connector
SAGP-845EV board has a 34-pin connector for the floppy drive.
• FDD1: FDC Connector
PIN Description PIN Description
1 GROUND 2 REDUCE WRITE
3 GROUND 4 N/C
5 GROUND 6 N/C
7 GROUND 8 INDEX#
9 GROUND 10 MOTOR ENABLE A#
11 GROUND 12 DRIVE SELECT B#
13 GROUND 14 DRIVE SELECT A#
15 GROUND 16 MOTOR ENABLE B#
17 GROUND 18 DIRECTION#
19 GROUND 20 STEP#
21 GROUND 22 WRITE DATA#
23 GROUND 24 WRITE GATE#
25 GROUND 26 TRACK 0#
27 GROUND 28 WRITE PROTECT#
29 N/C 30 READ DATA#
31 GROUND 32 SIDE 1 SELECT#
33 N/C 34 DISK CHANGE#
1 2
33 34