Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!melpar!toppin
From: toppin@melpar.UUCP (Doug Toppin   X2075)
Newsgroups: comp.unix.xenix
Subject: Does Xenix use the BIOS for anything?
Keywords: xenix bios
Message-ID: <115@melpar.UUCP>
Date: 5 Mar 90 22:24:25 GMT
Distribution: usa
Organization: E-Systems, Falls Church, VA
Lines: 18

This is a question that I believe I know the answer to but would
like to get a confirmation: "Does Xenix use the BIOS in the
[23]86 at all?" My boss has always been convinced that it does
and I believe that it does not.  I am guessing that the Xenix
drivers do everything on their own.  If you know for sure please
post.  The reason that I am interested right now is that I need
to modify some of the characters in the EGA font.  I can find
plenty of DOS examples on how to do this but all of them
reference a BIOS interrupt 0x10.  I believe that to perform the
same function under Xenix I will have to do what the BIOS does
using the termio ioctls for mapping my application to the EGA
card, others believe that all I have to do is write a driver in
assembly that will invoke the associated BIOS function.
We are running SCO Xenix 2.2.3 on the 286.

thanks
Doug Toppin
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