Path: utzoo!utgpu!watserv1!watmath!att!ucbvax!TELESYS.NCSC.NAVY.MIL!mark
From: mark@TELESYS.NCSC.NAVY.MIL ("Mark L. Williams")
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: Re: 3c503 etherus interruptus
Message-ID: <9102131907.AA01018@telesys.ncsc.navy.mil>
Date: 13 Feb 91 19:07:24 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The Internet
Lines: 20


Randy Bush  / news@psg.com  / ..!uunet!m2xenix!news writes...

> I am having problems with 3c503s interfering with serial ports, both in Xenix
> and MS-DOS.  I believe it has to do with interrupts.

The 3C503 manual verifies that DMA and interrupts are set by software.  The
interrupt level is 3 by default.  That accounts for the conflict on your
serial ports, I believe.  Unfortunately, I don't know the software you're
using well enough to offer configuration fixes.  Be advised, though, that
proper drivers using the correct options can reset the interrupts as desired.

Sorry I don't have more...

Mark L. Williams
Head, Telecommunications Branch
Code 7630
Naval Coastal Systems Center
Panama City, FL 32407-5000
(mark@telesys.ncsc.navy.mil)