Xref: utzoo comp.sys.ibm.pc.misc:10719 comp.dcom.modems:10566 Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!zaphod.mps.ohio-state.edu!samsung!olivea!oliveb!isc-br!tau-ceti!dogear!kharma!dave From: dogear!kharma!dave@isc-br!tau-ceti Newsgroups: comp.sys.ibm.pc.misc,comp.dcom.modems Subject: Re: 4.77MHz PC sufficient for 19200 bps modem? Keywords: modem, pc Message-ID: Date: 19 Jun 91 12:29:14 GMT References: <1991Jun18.201125.6198@cs.cmu.edu> Organization: The Computer Concern of Springdale, WA (1-509-258-7109) Lines: 32 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. --------------------------------------------------------------------------- dave@kharma (Dave Laird) | (___) | The Computer Concern, Springdale SYSOP: Used Kharma Lot BBS | (O O) | Washington 509-233-8474 *HST* _____________________________| (._.) |___________________________________ ++ isc-br!tau-ceti!dogear!kharma!dave ++