CyberResearch CPBF PMX-233, User Manual

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3.8 ATX Power Connector
The CPBF PMX-233 reserved a CN1 for ATX Power funtion CN1 that can
control the 5 - pin ATX via the extension cable from the b ackplane.
3.9 The Floppy Disk Drive Connector
A standard 34-pin header daisy-chain driver connector provides as CN8
with following pin assignment.
A t otal of two FDD drivers may connect.
• C N8: FDD CONNECTOR
PIN NO. DESCRIPTION PIN NO. 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 DATA#
25 GROUND 26 TRACK 0#
27 GROUND 28 WRITE PROTECT#
29 GROUND 30 READ DATA#
31 GROUND 32 SIDE 1 SELECT
33 GROUND 34 DISK CHANGE#