
EPC-7 Hardware Reference
Floppy Connector
The EPC-7 offers two floppy connectors: a 34-pin connector and a smaller 26-pin
connector that is a subset of the 34-pin connector. This is a build-time option. The
pinouts are as follows:
6
6
Pin
Signal
Pin
Signal
Pin
Signal
Pin
Signal
1
GND
2
GND
1
Fused VCC *
2
~INDEX
3
n/c
4
n/c
3
Fused VCC *
4
~DS0
5
n/c
6
n/c
5
Fused VCC *
6
~DSKCH
7
Fused VCC *
8
~INDEX
7
n/c
8
n/c
9
Fused VCC *
10
~DS0
9
n/c
10
~MO
11
Fused VCC *
12
~DS1
11
n/c
12
~DIR
13
GND
14
GND
13
n/c
14
~STEP
15
GND
16
~MO
15
GND
16
~WDATA
17
GND
18
~DIR
17
GND
18
~WGATE
19
GND
20
~STEP
19
GND
20
~TRK00
21
GND
22
~WDATA
21
GND
22
~WRPRT
23
GND
24
~WGATE
23
GND
24
~RDATA
25
GND
26
~TRK00
25
GND
26
~SIDE
27
GND
28
~WRPRT
29
GND
30
~RDATA
31
GND
32
~SIDE
33
GND
34
~DSKCH
Table 15. 34-pin and 26-pin Floppy Connector Pin-outs.
* Note: Pins 7, 9, and 11 on the 34-pin connector or pins 1, 3 and 5 on the 26-pin
connector are not connected unless the fuse is installed. The EPC ships with the
fuse installed and the fuse is not user-replaceable.
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