[MPlayer-dev-eng] Re: [GATOS]ATI chips classes?

[Vladimir Dergachev]

On Wed, 10 Jul 2002, Svante Signell wrote:

> Hello,
>
> Can somebody please clarify (or give a pointer to) the similarities
> and differences of ATI chips, especially wrt registers and such. I
> have currently two cards from ATI, an ATI 3D Rage LT Pro and an Radeon
> Mobility M6 LY.
>
> Here is my very unqualified guess:
> (found some info at the mplayer home page .../radeon/hacking)
>
> Card name             Chip class
> ATI 3D Rage LT Pro    mach64+3Dcapabilities
                     actually ragepro
> Rage128               rage128
> radeon mobility M6    rage256? (radeon1?)
                        rv200

> radeon 7500/8500      rage512? (radeon2?)

Actually radeon7500 is rv200
and radeon 8500 is r200

rv200 - radeon with built-in Rage Theatre and (at the moment)
unknown/non-existent way to access i2c bus. I also think it has 2 DAC
so it can drive two monitors simultaneously. (Caveat: notebook chips
sometimes have reduced features in order to save power).

r200 is a radeon with a redesigned 3d pipeline and some additional
features for overlay scaler. i2c register layout is a little different
from plain radeon, but this was documented and currently works.

Note: I might be off on LY chip, check in ati.2/ source for which chips
are marked as RV200 to be sure.

                           Vladimir Dergachev

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