🚀 go-pugleaf

jch+@cs.cmu.edu (Jonathan Hardwick) writes:

> A housemate has an original Big Blue IBM PC, running at the blazing
> speed of 4.77MHz.  We want to use this as a dumb terminal to access
> our university workstations.  The university offers 2400 bps service
> with MNP level 5, and a 9600 bps or 19200 bps MCN service using DOV
> modems.  We'd really like the extra speed if possible.  Is the PC
> going to be able to keep up with 19200 bps?
I think not. And, if my aged, infirm memory is correct, it isn't the
motherboard's fault. It's the inherent capability of the chip onboard your
comm port. You need a 16 bit card to accomplish this speed.

How about 9600 bps?
Yes, I believe, given the right card, you can do 9600 ok, though.
> 
> Oh, and if the PC *can't* keep up, what sort of motherboard upgrade
> would we need?  10 MHz 8086?  80286?
Given the fact that a 286 12 mz motherboard for a PC runs less than 150
dollars these days, depending upon how robust you will need it to be, I think
you should upgrade, anyway. Just make certain it will fit the OEM IMB case.
Some will, some won't.

> 
> Thanks for any information,
> Jonathan Hardwick, School Of Computer Science, Carnegie Mellon Univ.


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