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From: tpc@bnr-fos.UUCP (Tom Chmara)
Newsgroups: comp.dcom.modems,comp.unix.questions,comp.terminals
Subject: vc2100 terminal + Microcom AX/2400c = HEADACHE; any aspirin?
Message-ID: <725@bnr-fos.UUCP>
Date: 10 Jul 89 03:07:38 GMT
Reply-To: tpc@bnr-fos.UUCP (Tom Chmara)
Organization: Bell-Northern Research, Ottawa, Canada
Lines: 37

I posted a question to comp.dcom.modems a while back about this, and got
one fellow (who felt sorry for me for having to deal with a vc2100...:-))
	I have an aging VC2100 (Volker-Craig terminal emulating a VT102)
connected to a nice, new, fancy AX/2400c MNP Class 5 Microcom modem.
It's wonderful, 'smarvellous...but it garbages my display something fierce.
I am using XON/XOFF (the VC2100 doesn't seem to be able to control RTS/CTS,
so hardware flow control is out) to the modem, and have shrunk the MNP 5
packets to 64 bytes max, but the terminal still chokes.  The usual symptom
is observed in VI:
	a)  cursor is NOT placed where I specified it go;
	b)  characters in the line get clobbered (in the vicinity of the
		proper position);
	c)  on a "tab" or autoindent, the cursor is NOT at the specified tab
		position (usually left by about one char pos)
Redisplaying the screen SOMETIMES clears up the problem (about 50%), depending
on the severity of the screwup.  THe text is fine, verified by checking by
other means (cat, more, etc).  It's just the cursor positioning that's
screwy.
	This terminal has served me well before, at up to 9600 bit/s, and
on occasion seen service at 19.2k.  Never a problem until now.  Could it
be the terminal finally giving up the ghost?  I hope not, as I'm not really
sufficiently flush to buy a replacement...but it's wreaking hell on trying
to get any work done from home. Note that I have hacked the termcap I'm using
from the VT102 termcap (extending various of the delay times).  One option
which springs immediately to mind is:  if anyone has a good termcap for this
terminal, could you ship it this way?
	Thanks for any help you  can give.
Final bit of information:
	Host:  Sun 3/60, SunOS 4.0.1, through CISCO terminal adaptor
	
Thanks again...
	---tpc---
-- 
I am sole owner of the above opinions. Licensing inquiries welcome.
------------------------------------------------------------------------
Tom Chmara			UUCP:  ..utgpu!bnr-vpa!bnr-fos!tpc
BNR Ltd.  			BITNET: TPC@BNR.CA