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Hello,

> > in theory every cg6 with 4MB VRAM should support double-buffering and
> > some bits in the FBC_MODE register should select which buffer to read,
> > write and display. My problem - I have a TurboGX here, the PROM says it
> > supports double buffering but fiddling these bits doesn't do anything
> > besides fiddling these bits.=20
> > So, apparently I'm missing something. Does it need more setup? Is it
> > known broken?

> I think the TGX+ have 4MB VRAM and the TGX have 1MB.=20

Exactly.

> I guess you need a 4MB part.

I have a 4MB part ( and another with 1MB ) - sorry for being ambiguous.
On the 1MB card the PROM doesn't claim it supports double-buffering.

have fun
Michael

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