AT&T 3B2/300 Technical Reference Manual page 689

- - - - - - - - - - - - - - - - A p p e n d i x : CONNECTOR AND CABLING INFORMATION
34-PIN FLOPPY DISK CONNECTOR, JlO
PIN DESCRIPTION FUNCTION
1 GROUND GROUND
2 FLOPPY LOW RPM (FLOW) OUTPUT
3 GROUND GROUND
4 NOT USED (FSP ARE) NC
5 GROUND GROUND
6 FLOPPY DRIVE SELECT 3 (FDS3(0]) OUTPUT
7 GROUND GROUND
8 INDEX (FINDEX(O]) INPUT
9 GROUND GROUND
10
FLOPPY DRIVE SELECT O (FDSO(O])
OUTPUT
11
GROUND GROUND
12
FLOPPY DRIVE SELECT 1 (FDSl[O])
OUTPUT
13
GROUND GROUND
14 FLOPPY DRIVE SELECT 2 (FDS2(0]) OUTPUT
15 GROUND GROUND
16
MOTOR ON (FMOTON[O]) OUTPUT
17 GROUND GROUND
18
FLOPPY DIRECTION SELECT (FDIRC(O])
OUTPUT
19
GROUND GROUND
20 FLOPPY STEP (FSTEP(O]) OUTPUT
21 GROUND GROUND
22 WRITE DATA (FWDATA(O]) OUTPUT
23 GROUND GROUND
24 FLOPPY WRITE GATE (FWGATE(O]) OUTPUT
25 GROUND GROUND
26 FLOPPY TRACK O (FTRO(O]) INPUT
27 GROUND GROUND
28
FLOPPY WRITE PROTECT (FWRTPRT(O])
INPUT
29 GROUND GROUND
30
READ DATA (FRDATA(O])
INPUT
31
GROUND
GROUND
32 FLOPPY SIDE SELECT (FSSEL[O]) OUTPUT
33 GROUND GROUND
34 FLOPPY READY (FRDY(O]) INPUT
LEGEND:
NC No Connection
CONNECTOR AND CABLING INFORMATION B-107