APOLLO Technical Manual
Jumpers and connectors
J7A – Parallel port (LPT1)
DB25 female
PC99 colour: Maroon
DB25
D-type socket
Signal name
1 STROBE
2 D0
3 D1
4 D2
5 D3
6 D4
7 D5
8 D6
9 D7
10 ACKNOWLEDGE
11 BUSY
12 PAPER
EMPTY
13 SELECT
14 AUTOFEED
15 ERROR
16 INIT
17 SELECT
IN
18 Ground
19 Ground
20 Ground
21 Ground
22 Ground
23 Ground
24 Ground
25 Ground
13
25
14
1
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