Date: Fri, 08 Mar 1996 08:32:09 -0600 From: "Eric L. Hernes" <erich@lodgenet.com> To: Wilson MacGyver <macgyver@infinet.com> Cc: hackers@freebsd.org, joerg_wunsch@uriah.heep.sax.de Subject: Re: direct access to video card Message-ID: <199603081432.IAA24148@jake.lodgenet.com> In-Reply-To: Your message of "Thu, 07 Mar 1996 12:11:04 EST." <313F18A8.3DBFAAF4@cylatech.com>
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A while back I ported Linux' svga and graphics libraries. As I remember it was little more than an afternoon project. Sorry but I lost interest and need the disk space for something else :(. But it ain't too bad if you don't look at the code, just close your eyes and compile. That stuff is hideous. eric. > J Wunsch wrote: > > You can mmap() the frame buffer, but have a look at the ten thousands > > lines of code in the XFree86 Xserver that deal with every and each > > hardware idiosyncrasy of the various not-really-compatible graphics > > cards. I'm sure, you'll immediately give up your idea. > > > > Your best bet by the time the next release of XFree86/tm will be out > > is to use their ``DGA'' (direct graphics access ?) Xserver extension. > > well, I'd really like to avoid using X if at all possible. The > company I work for is working on a game (for DOS). As the > developementing is progressing, I want to be able to first port > what we've done to FreeBSD, and possbilly do my part of development > on FreeBSD. The way I see it, first I'd have to implment a library > to handle direct video access, much like the svgalib on Linux. > And frankly, I'm lost as to where to start. > > For example, what funication call would I make to say, set the > videocard to various mode? I suppose I could use inline asm > within GCC. Though I rather not do that. > > > -- > Wilson MacGyver macgyver@cylatech.com > -------------------------------------- > Veni, Vidi, Concidi. > -- erich@lodgenet.com erich@rrnet.com
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