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Floppy Drive Connector (CN3)
You can attach up to two floppy disks to the Gene-6320's on-board
controller and use any combination of 5.25" (360 KB and 1.2 MB)
and/or 3.5" (720 KB, 1.44 MB, and 2.88 MB) drives.
The Gene-6320 CPU card comes with a 34-pin daisy-chain drive
connector cable. On one end of the cable is a 34-pin flat-cable
connector. There are two sets of floppy disk drive connectors, one
in the middle, and one on the other end. Each set consists of a 34-
pin flat-cable connector (usually used for 3.5" drives) and a
printed-circuit board connector (usually used for 5.25" drives).
Connecting the Floppy Drive
1. Plug the 34-pin flat-cable connector into the CN3 connector.
2. Attach the appropriate connector on the other end of the cable
to the floppy drive(s). You can use only one connector in the
set. The set on the end (after the twist in the cable) connects to
the A: floppy and the other set in the middle connects to the B:
floppy.
Pin Assignments
The following table lists the pin assignments for the CN3 connec-
tor:
Floppy Drive Connector (CN3)
Pin
1~33 (odd)
4
8
12
16
20
24
28
32
Signal
GND
N.C.
INDEX
DRIVE SELECT B
MOTOR B
STEP
WRITE GATE
WRITE PROTCET
SIDE1
Pin
Signal
2
REDWC
6
DS1
10
MOTOR A
14
DRIVE SELECT A
18
DIR
22
WRITE DATA
26
TRACK0
30
READ DATA
34
DISK CHANGE
Chapter 2 Installation
19
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