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162 Appendix C: Technical reference
Parallel port connector (floppy disk drive interface)
The parallel port connector is more specifically a 25-pin, D-SUB female
connector. The pinout of this connector depends on whether the interface is
actually configured to act as a parallel port or floppy disk interface.
The pinout of this connector, when configured as a parallel port interface, is
outlined in the following table:
Parallel interface
Pin
Signal
1
/STROBE
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
/ACK
11
BUSY
12
PE
13
SEL
14
/AUTOFD
15
/ERROR
16
/INIT
17
/SELIN
18-25
GND
I/O
Description
I/O
Strobe.
I/O
Data Bit 0.
I/O
Data Bit 1.
I/O
Data Bit 2.
I/O
Data Bit 3.
I/O
Data Bit 4.
I/O
Data Bit 5.
I/O
Data Bit 6.
I/O
Data Bit 7.
I
Acknowledge.
I
Busy.
I
Paper End.
I
Select.
I/O
Autofeed.
I
Error.
I/O
Initialize.
I/O
Select In.
-
Ground.
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