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Path: utzoo!lsuc!jimomura
From: jimomura@lsuc.UUCP (Jim Omura)
Newsgroups: net.micro.atari16
Subject: Re: Inquiry about Avatex 1200 modem
Message-ID: <1318@lsuc.UUCP>
Date: Mon, 25-Aug-86 01:04:07 EDT
Article-I.D.: lsuc.1318
Posted: Mon Aug 25 01:04:07 1986
Date-Received: Mon, 25-Aug-86 02:23:34 EDT
References: <1317@lsuc.UUCP> <8608230248.AA07211@mitre-bedford.ARPA>
Reply-To: jimomura@lsuc.UUCP (Jim Omura)
Organization: Barrister & Solicitor, Toronto
Lines: 39
Summary: Dropping DTR

In article <8608230248.AA07211@mitre-bedford.ARPA> jhs@MITRE-BEDFORD.ARPA writes:
>I think the Avatex will disconnect if you drop Data Terminal Ready.  This can
>be done in software so need not be manual.  However it cannot be done by
>typing on the keyboard while on-line, as I presume can be done with a real
>$350.00 Hayes.  The Avatex will also drop back to command mode if you lose the

     Thanks for pointing that out John.  What baffled me for a while was
the fact that leaving the VT-52 emulator or leaving Flash doesn't drop
DTR.  David Betz on BIX has a new version of BMODEM which drops DTR on
exit, but it would seem that this isn't the ideal situation yet because
you cannot call a SHELL from within BMODEM at this time.  This limits
what you can actually do from within BMODEM.  David is going to write the
next version of BMODEM with a Disconnect command which will force DTR
low from within BMODEM.  This seems to be the best idea for now.
Those of you writing Comm packages should keep in mind that there are
essentially two standard methods of forcing disconnection.  The first
is the DTR low, which fakes shutting off the "terminal".  The second
is 1/2 BREAK which is from Bell 103 and 212A modems.  One or both of these
should always be available to the user.

...
>
>All in all, I remain VERY pleased with the performance of my Avatex,
>especially considering the price of $80.00 that I paid for it.

     I agree.  Although I've only had it for a couple of days now, I
have successfully uploaded and downloaded at 1200 baud across Tymnet
which failed with the GVC.  Also, I have reports that real Hayes modems
are not particularly reliable either (though likely not as bad as the
GVC's), so there you have it.  It seems you can do better than a
real Hayes modem for much less.



-- 
James Omura, Barrister & Solicitor, Toronto
ihnp4!utzoo!lsuc!jimomura
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