*BSD News Article 99309


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From: neswold@spiv.fnal.gov (Richard M. Neswold)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Adding com3 & com4
Date: 09 Jul 1997 15:03:19 -0500
Organization: FERMILAB, Batavia, IL
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rich@chumbly.missouri.edu (Rich Winkel) writes:

> I have an extra multi-i/o card lying around that can be configured to
> use com3 and com4 on interrupts 5 and 7.  I figure I can put the parallel
> driver into polling mode and thus avoid conflicts with int 7.  It looks
> like int 5 is already allocated to com3 in the kernel.  Are there any
> difficulties I haven't thought of?

S3-based video cards conflict with COM4's I/O address of 0x2e8. Other
video cards may have the same restrictions...

-- 
  Rich

 ------------------------------------------------------------------------
  Richard Neswold, Accelerator Div./Controls Dept |     neswold@fnal.gov
  Fermilab, PO Box 500, MS 347, Batavia, IL 60510 | voice (630) 840-3454
  'finger neswold@aduxb.fnal.gov' for PGP key     |   fax (630) 840-3093