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From: kenny@msc.edu (Kenny Goers)
Newsgroups: comp.unix.sysv386,comp.unix.internals
Subject: Writing UNIX video /graphics drivers
Keywords: device drivers, video drivers, vga, graphics drivers
Message-ID: <2762@uc.msc.umn.edu>
Date: 12 Oct 90 18:00:46 GMT
Sender: news@uc.msc.umn.edu
Reply-To: kenny@uh.msc.umn.edu (Kenneth R. Goers)
Organization: Minnesota Supercomputer Center
Lines: 19

Netland,

I've recently purchased Coherent, a U*NX ver 7 clone for the PC. 
Currently I would like to write a device driver for my
VGA/SVGA card (Orchid Pro II), that will allow me to use the
graphic modes of the card and I don't know where to begin.  I've
written low level VGA/SVGA code for DOS, what I would like to know is the
kind of routines one implements, under a U*NX system.
Do you write a charcter or block driver?  Which functions do you
put in ioctl?  What general functions are comtained in most UN*X 
video drivers?  Does anyone have a generic one I can hack up?
I intend this to be public domain when finished so your effort
won't be wasted.

Any help welcome,
kenny.
__
Kenny Goers (kenny@msc.edu)
Minnesota Supercomputer Center, Inc.