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From: dje@sspiff.cygnus.com (Doug Evans)
Subject: Re: [Q] Xconfig for ATI Wonder V3?
References: <1993Mar30.170656.28858@cbnewsj.cb.att.com>
Organization: Cygnus Support
Date: Sat, 3 Apr 1993 08:41:02 GMT
X-Newsreader: Tin 1.1 PL4
Message-ID: <1993Apr3.084102.3881@sspiff.cygnus.com>
Lines: 39
dwex@cbnewsj.cb.att.com (david.e.wexelblat) writes:
>In article <1993Mar29.185005.9512@exu.ericsson.se> lmcdefo@lmc.ericsson.se (Denis Fortin) writes:
>> In article <paul.733385642@suite.sw.oz.au>, paul@suite.sw.oz.au (Paul Antoine) writes:
>> |> I've read everything I could find on deriving Xconfigs, including
>> |> readme's etc, but could find nothing that would work with my
>> |> (admittedly old) ATI VGA Wonder card (it's the early V3 version).
>> |>
>> |> Comments in the driver such as 'V3 board support needs a lot of work -
>> |> I suspect it isn't worth it' lead me to believe that the support is
>> |> shakey at best.
>>
>> I haven't looked at the X386 for the past couple of years, but at the time
>> I wanted to add in support for my ATI VGA Wonder card (it's one of the old
>> V3 type).
>>
>> I ordered the documentation for ATI, only to find out that in V3 you can't
>> define different read and write addresses when you access pixels. Therefore,
>> you cannot blit from one place to the next: you need to read into RAM and
>> then copy back into the video card at the new location. This is a pain to
>> do, and the preliminary X386 ATI support I had seen a couple of years ago
>> very wisely (?!) avoided touching that.
>>
>
>If that's the only problem, XFree86 now supports single-bank BitBlts (added
>for the brain-dead Trident chipsets). It does the horrible/nasty/ugly
>scheme of slurp-into-a-buffer-then-spew-it-out.
That's good news! As best as I can remember, the single-bankness was the
only reason why V3 support was left out.
>> I assumed that this is what is meant in the comments by "V3 board support
>> needs a lot of work".
Yep. That's what was meant.
--
Doug Evans | And Life, that sets all things in rhyme,
dje@sspiff.cygnus.com | May make you poet, too, in time -
| But there were days, O tender elf,
| When you were Poetry itself! C. Morley