Analog modem emulator?

[Jim Leonard]

Tony Duell wrote:
>>>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 oldskool.org)                    http://www.oldskool.org/
Want to help an ambitious games project?             http://www.mobygames.com/
Or check out some trippy MindCandy at             http://www.mindcandydvd.com/