Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!usc!apple!fernwood!portal!cup.portal.com!compata
From: compata@cup.portal.com (David H Close)
Newsgroups: comp.os.cpm
Subject: Re: Why Bother With CP/M?
Message-ID: <28821@cup.portal.com>
Date: 12 Apr 90 04:45:59 GMT
References: <XX000111df@pallio.UUCP>
Distribution: usa
Organization: The Portal System (TM)
Lines: 11

dg@pallio.UUCP (David Goodenough) writes:

" On the other side though, it still chugs along nicely: a 4MHz Z80 can
" do the CRC and data transfer to keep an Xmodem transfer going at up to
" about 22000 BPS, and that's doing the CRC the hard way (i.e. bit banging),
" with a table driven CRC, it'd probably exceed 38400 BPS.

Actually, it will do even better.  I know of a 4MHz Z80 pumping 56Kbps SDLC.

Dave Close, Compata, Arlington, Texas
compata@cup.portal.com OR compata@mcimail.com