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From: cyamamot@kilroy.jpl.nasa.gov (Cliff Yamamoto)
Newsgroups: comp.dcom.modems,sci.electronics
Subject: UARTS for speed...
Keywords: UARTS, 8250, 16450, 16550A
Message-ID: <1990Nov21.145421.23315@elroy.jpl.nasa.gov>
Date: 21 Nov 90 14:54:21 GMT
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Greetings!

I've been running my serial line at 38.4Kbaud on my 386 clone for a few
weeks now without any problems (not running Windows or Deskview).  However,
I've heard that one can change the UART to offload some work on the CPU.

Can anyone tell me if the 8250, the 16450 and the 16550A are pin-for-pin
interchangable?  I'm not sure if I have the 8250 or the 16450, but I'd like
to eventually plug in a 16550A.  Also do all three share the same port and
programming characteristics?  Are 16550A readily available?

Thanks,
Cliff Yamamoto
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USnail: Clifford K. Yamamoto - KA6JRG  | Email:  cyamamot@kilroy.jpl.nasa.gov
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