Flow control woes continued

Chip Atkinson (chip@pupman.com)
Mon, 9 Aug 1999 22:58:12 -0600


Greetings,

I'm still battling flow control problems on my machine and wonder if
anyone can provide any assistance.  I asked earlier about this problem and
got some suggestions and tried them but the problem remains.  I have
eliminated mgetty problems by using minicom on both ends, but am asking on
this list since the people on it have dealt with configuration issues, and
I'm still basically trying to get mgetty to wrok properly.

Here's what I've tried:

I used minicom to communicate between both machines.  One direction shows
buffer over run problems, the other direction shows no buffer overrun.

I swapped modems, so that's not the problem

I checked continuity and pin outs of the cabling, so I don't believe
that's the problem either.

I have checked that the port has hardware flow control on and that I'm
sending the correct initialization string, so I believe that's not the
problem either.


I'm about to get an oscilloscope and put it on the rts and cts lines next.

Here's what I have:

Red Hat Linux 6.0
PC Clone with 200MHz Pentium, 64M ram
Award bios


So now for the question:  Does anyone know anything about bios settings?
I have been looking through them and there is a "section" for onboard
serial ports.  They have the i/o address and IRQ, as well as something
called "UR2 Mode", which has as the following choices "Standard", "FIR",
"MIR 1.15M", "MIR 0.57M", "ASK IR", and "IrDA 1.0".  Does anyone have any
idea what these things mean?

Thanks in advance for any help.

Chip


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 Chip Atkinson 
 http://www.pupman.com 
 --- If I can't fix it, I can fix it so it can't be fixed --
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