5: Technical Information
78
Parallel Connector
There is one parallel connector at the back of your C-Series
computer:- AT compatible 25-way female D-type connector. Note:
EPP/ECP signals are not shown - see the System Board User
Manual.
Pin Number Function Direction
1 - strobe from computer
2 + data bit 0 (lsb) from computer
3 + data bit 1 from computer
4 + data bit 2 from computer
5 + data bit 3 from computer
6 + data bit 4 from computer
7 + data bit 5 from computer
8 + data bit 6 from computer
9 + data bit 7 (msb) from computer
10 - acknowledge to computer
11 + busy to computer
12 + paper end (out of paper) to computer
13 + select to computer
14 - autofeed from computer
15 - error to computer
16 - initialise printer from computer
17 - select input from computer
18-25 ground not applicable
+ shows active high
- shows active low
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