Trident CyberBladeXP4 status?

[Alex Deucher]

FWIW, the VIA PLE133 datasheet has documentation on the integrated
trident chip.  It's not the xp4, but I'd imagine the chips are pretty
similar.  You can grab the datasheet on VIA's website.

Alex

On 5/10/05, Mathieu Lacage <Mathieu.Lacage at sophia.inria.fr> wrote:
> On Tue, 2005-05-10 at 09:01 -0500, Jason L Tibbitts III wrote:
> > >>>>> "AH" == Alan Hourihane <alanh at fairlite.demon.co.uk> writes:
> >
> > AH> You could try hacking on the xp_accel.c file, and see what does or
> > AH> doesn't work.
> >
> > So I set up a basic development environment on two machines and tried
> > a couple of things:
> >
> > Just turning on acceleration in trident_driver.c resulted in no image
> > and a hard hang; the log showed that the blitter was timing out.
> 
> I ended up using this to avoid the timeout (it is a matter of printing
> in the lgos the value of the GER_STATUS register and see what is its
> final value, then copy it in the code):
> 
>       busy = MMIO_IN8(pTrident->IOBase,GER_STATUS) & 0x90;
>       if (busy != 0x90) {
>         return;
>       }
> 
> Then, I get somewhat less garbled output but a freeze anyway.
> 
> Mathieu
> --
> 
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