17 Aug
1997
17 Aug
'97
4:59 a.m.
Does anyone have any info on the I/O port on the back of the HP9100
desktop calculator? I believe that HP once produced a manual telling you
how to link up homebrew/custom peripherals, but I don't have it, alas
What I really need is a pinout, brief signal descriptions or timings, etc.
I want to be able to output a few on/off signals (I don't care if they're
binary or BCD encoded).
-tony