--- Ryan Underwood <[EMAIL PROTECTED]> wrote:
> 
> Anyone know anything about it?  I just picked one up because it
> looked
> interesting (dual R128Pro chips).  They are cheap now because there
> is
> no more driver support from ATI.  I see on the DRI page that it is
> unsupported but wondered if any folks with R128 docs had more info
> about
> it, esp how the two chips divide up rendering tasks.  Also, was there
> a
> dual head version made?  There is a place on the board for a second
> VGA
> connector, but I can't find any info about that either.
> 

It was basically two rage128 chips on a single board.  It looks like
they could have been set up to drive multiple heads the way an appian
or matrox mms board worked (one chip per head), although I know of no
dualhead version.  Each chip was wired to it's own bank of memory, so
while the boards claimed to be 64 (?) MB they were really only 32.  As
I recall, the driver did some sort of AFR (alternative frame rendering)
where each chip would render every other frame.  I don't recall the
boards ever really performing very well and I think there were issues
with maintaining proper memory state on each chip.  the drivers were
ALWAYS buggy.  It never really worked too well and I suspect that is
why ATI eventually dropped it.

You could probably get it to work with the r128 driver, but I doubt you
could ever get both chips working.  None of the r128 stuff from ATI
I've seen has anything about the Maxx.

Speaking of r128's, does anyone know of any cheap notebooks with r128's
in them?  I'm thinking of trying to add dualhead support again.  I
wrote a patch a while back (check bugzilla), but without hardware (and
docs at the time), I wasn't able to get it sorted out.

Alex


> -- 
> Ryan Underwood, <[EMAIL PROTECTED]>
> 

> ATTACHMENT part 2 application/pgp-signature name=signature.asc



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