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From: wb8foz@mthvax.cs.miami.edu (David Lesher)
Newsgroups: comp.sys.ibm.pc.misc,comp.dcom.modems
Subject: Re: 4.77MHz PC sufficient for 19200 bps modem?
Message-ID: <1991Jun21.031756.15090@mthvax.cs.miami.edu>
Date: 21 Jun 91 03:17:56 GMT
References: <1991Jun18.201125.6198@cs.cmu.edu> <91171.105841U39648@uicvm.uic.edu>
Reply-To: wb8foz@mthvax.cs.miami.edu (David Lesher)
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Organization: NRK Clinic for habitual NetNews Abusers
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It's important to define what you mean by "keep up" in this case.

Case in point: Several years back, I was flogging a wideband WAN system
to get some idea how well it might handle some big graphics dumps.
I used both 11/34's  and that new-fangled 11-750 {I said it was a few
years ago, remember?} to spit out characters as fast as possible.  For
destinations, I used a variety of terminals {i.e.  whatever I could
snitch from folk's offices when they went to meetings;-} such as those
somewhat weird-looking HP things, VT-100's, AJ's, etc.

Not a one could keep up @ 19,200. They just could not write fast
enough. They would X-off back, catch a breath, and start again just
fine, but without flow control, forget it. Now since nobody could read
that fast, that's no problem. But I did have limited access to two 19"
Tek graphics boxes with price tags to match. They did keep up. Maybe
the 80286 aux-processors helped ;-}

On a PeaSea, I suspect the video would be the biggest drain.  Stick to
a mono text card, if you can FIND one, and I bet it will work, with
flow control, of course.

BTW, if I fed all 8 ports on the Sytek/Localnet box @ 19,200, its z-80
got very confused, and crashed every time. Wonder why;-?
-- 
A host is a host from coast to coast.....wb8foz@mthvax.cs.miami.edu 
& no one will talk to a host that's close............(305) 255-RTFM
Unless the host (that isn't close)......................pob 570-335
is busy, hung or dead....................................33257-0335