Subject: Re: Modem trouble
To: Neil A. Carson <neil@causality.com>
From: David Forbes <dmf20@hermes.cam.ac.uk>
List: port-arm32
Date: 10/27/1998 22:42:17
> Which serial port do you have it attached too---I don't know, but could
> it be on the polling non-interrupt one built into the footbridge, if so
> could it be losing a character or something?
I've now changed the jumpers on the board so that both the southbridge
serial ports are used, and I get the same behaviour with both. I've also
tried changing the set-up to use software handshaking, but this didn't
solve the problem either.
However, I've temporarily solved the problem by turning down the
computer<->modem speed to 57600. I'd really like to get this back to 115k
so that I can connect at v90 if possible.
I suspect (as you suggested) that it is losing some characters somewhere.
I don't think it's a handshaking problem because the XON/XOFF didn't work
either. However, the boot messages show the com port as set-up correctly
with IRQ and fifo.
Any clues that could help get this running at full speed would be greatly
appreciated.
Thanks,
David.