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From: hamilton@uiucuxc.CSO.UIUC.EDU
Newsgroups: net.micro.amiga
Subject: Re: modem hookups
Message-ID: <148600020@uiucuxc>
Date: Sat, 30-Nov-85 21:01:00 EST
Article-I.D.: uiucuxc.148600020
Posted: Sat Nov 30 21:01:00 1985
Date-Received: Mon, 2-Dec-85 03:32:18 EST
References: <276@kovacs.UUCP>
Lines: 21
Nf-ID: #R:kovacs.UUCP:276:uiucuxc:148600020:000:917
Nf-From: uiucuxc.CSO.UIUC.EDU!hamilton    Nov 30 20:01:00 1985


>	  Next, pin 20 on the connector is supposed to carry  a  data-
>	terminal  ready signal to tell the modem that you are on-line.
>	This would normally be +5 volts, but on the Amiga, there is no
>	such signal.  In fact, the line tests out at -5 volts.
>	  I am posting this as I did not find any  referances  to  the
>	DTR signal not being usable anywhere in the manuals.

did you check that signal while actually using the serial port?  the
reasonable assumption is for it to be off (~-5v) until you open the
serial device, and that's just what happens.  if you leave your modem
unstrapped (DTR counts), you get the "feature" of auto-hangup when you
exit your modem program.

	wayne hamilton
	U of Il and US Army Corps of Engineers CERL
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