Xref: utzoo comp.sys.att:8133 unix-pc.general:4196
Path: utzoo!utgpu!jarvis.csri.toronto.edu!torsqnt!hybrid!mdapoz
From: mdapoz@hybrid.UUCP (Mark Dapoz)
Newsgroups: comp.sys.att,unix-pc.general
Subject: Re: 7300 and 9600 baud modems
Message-ID: <1989Nov28.002800.12838@hybrid.UUCP>
Date: 28 Nov 89 00:28:00 GMT
References: <3311@convex.UUCP> <24425@cup.portal.com> <581@limbic.UUCP>
Reply-To: mdapoz@hybrid.UUCP (Mark Dapoz)
Organization: The Home for Unemployed Basselopes, Toronto, Ontario, Canada
Lines: 26

In article <581@limbic.UUCP> gil@limbic.UUCP (Gil Kloepfer Jr.) writes:
>A problem I *have* noticed is calling at Trailblazer speed to a system
>from my VT100 *through* the UNIX-pc results in many lost characters
>on my receiving end.  I'm not sure whether this is due to the 3B1 not
>being able to handle 2 serial ports at high-speed, or the VT100 being
>too slow and causing too many characters to be queued-up at the device
>driver level.  In any event, forcing the Telebit speed to 9600 baud
>doesn't fix the problem.

I use a Wyse 50+ as a terminal on my 3B1 and I run it at 19.2K baud (anyone
know how to get 38.4K baud out of the serial ports?).  The terminal is hooked
up to one port of the combo card and the 'blazer is on the other port.  I've
called other systems at PEP speeds using the terminal and I always lose
characters, but if I call using the console everything is ok.  I have the 
'blazer talking to the 3B1 at 19.2K so there isn't a speed mismatch between the
terminal and modem.  I've also noticed that I don't get any speed degregation 
on the terminal when I've got a uucp transfer taking place on the modem so I 
doubt that the device driver is at fault.  I know the terminal can handle the
speed because I've used it with other systems at 38.4K baud without any 
problems.  Any other ideas?
		-mark
-- 
  Mark Dapoz  (mdapoz@hybrid.UUCP)  ...uunet!mnetor!hybrid!mdapoz

I remind you that humans are only a tiny minority in this galaxy.
	   -- Spock, "The Apple," stardate 3715.6.


Brought to you by Super Global Mega Corp .com