Parallel Port
PSI BOX Reference
Chapter 4 Page 36
Figure 4-4. The Centronics Input Port Pin Outs.
PIN SIGNAL DIRECTION
1 STROBE INPUT TO PSI BOX
2 DATA 0 INPUT TO PSI BOX
3 DATA 1 INPUT TO PSI BOX
4 DATA 2 INPUT TO PSI BOX
5 DATA 3 INPUT TO PSI BOX
6 DATA 4 INPUT TO PSI BOX
7 DATA 5 INPUT TO PSI BOX
8 DATA 6 INPUT TO PSI BOX
9 DATA 7 INPUT TO PSI BOX
10 ACKNOWLEDGE OUTPUT FROM PSI BOX
11 BUSY OUTPUT FROM PSI BOX
12 PE OUTPUT FROM PSI BOX PULLED to Ground
13 SELECT OUTPUT FROM PSI BOX PULLED HIGH NEW LINE
15 /ERROR OUTPUT FROM PSI BOX PULLED HIGH NEW LINE
14, 16-17 NO CONNECTION
18-25 GROUND
Figure 4-5. Centronics Input From PC Printer Port.
