Re: [ACPI] Re: [RFC] Reliable video POSTing on resume

[Stefan Dösinger]

Am Samstag, 5. Februar 2005 18:38 schrieb Jon Smirl:
> On Sat, 5 Feb 2005 17:48:43 +0100, Stefan Dösinger
>
> <stefandoesinger@xxxxxx> wrote:
> > The reset code of radeon card seems to be easy to reverse engineer. I
> > have started an attempt and I have 50-60% of my radeon M9 reset code
> > implemented in a 32 bit C program. I had to stop due to school reasons.
>
> The problem with the radeon reset code is that there are many, many
> variations of the radeon chips, including different steppings of the
> same part. The ROM is matched to the paticular bugs of the chip. From
> what I know ATI doesn't even have a universal radeon reset program.
I don't think they differ a lot. Does anybody know how the Win32 driver resets 
the card? If it calls 0xc000:3 it will also have the problem with overwritten 
reset code, and if it has it's own reset routine the cards can't differ a 
lot.
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