3.9 Floppy Disk Drive Connector
The 3302670 uses a standard 34-pin header connector,
FD1
, for
floppy disk drive connection. A total of two FDD drives may be
connected to
FD1
at any given time.
z
FD1: FDD Connector
PIN
Description
PIN
Description
1
GND
2
DRVDEN0
3
GND
4
N/C
5
GND
6
DRVDEN1
7
GND
8
INDEX#
9
GND
10
MTRA#
11
GND
12
DSB#
13
GND
14
DSA#
15
GND
16
MTRB#
17
GND
18
DIR#
19
GND
20
STEP#
21
GND
22
WDATA#
23
GND
24
WGATE#
25
GND
26
TRAK00#
27
GND
28
WRTPRT#
29
N/C
30
RDATA#
31
GND
32
HDSEL#
33
N/C
34
DSKCHG#
2
34
1
33
13
Summary of Contents for 3302670
Page 9: ...1 3 Board Dimensions 4...
Page 13: ...3 2 Board Layout 8...
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