Sounds like the cards were approximately contemporary.
That's perfectly reasonable. It could be that the Serial card was meant
for local interfacing to serial peripherals while the Communications card
was meant for "high-speed" telecommunications applications.
Yes. The bit-banger is fairly usless for serial input, although it's fine
for output. I suspect it was mainly used for driving a serial printer (I
Can someone clarify what "bit-banger" means and why it was different from a
contemporary serial interface card?
--
Jim Leonard (trixter at