3b2-310 lost characters

[James R. Van Artsdalen]

In article <17 at asi.UUCP>, metro at asi.UUCP (Metro T. Sauper) writes:
> 
> I did not see the origional problem, but from the responses, it seems to 
> sound like a problem I had on my 3B2/400.

			[description of problem]

> We had a US Robotics modem connected to the contty port.  The modem was set
> to echo characters sent from computer to pace the dialing strings.  The DCD
> line was tied high so the 3B2 would talk to the modem.  If the current user
> broke the connection without ^D (i.e. did not log off) the computer could
> not tell since the DCD line was tied high.  The modem echoed DISCONNECT^m.

	[Description of characters echoed forever and solution to it all]

> This had caused me no end of headaches until i figured it out.  Any comments
> on what I observed are welcome.
> 
> Metro T. Sauper, Jr.
> ihnp4!ll1!bpa!asi!metro

This could be a problem, but not in this case.  Our modem is set up not to
echo the the characters from the computer when dialing.  In addition I have
a little black-box to cause the carried detect to pulse low whenever carrier
is lost (about a 30 second pulse).  Otherwise carried detect line into the 3b2
stays high.  Fixes that incredibly annoying kernel bug in the 3b2 that prevents
the 3b2 from talking to modems when carrier detect is low...
-- 
James R. Van Artsdalen    ...!ut-ngp!utastro!osi3b2!james    Live Free or Die