jason@ponder.csci.unt.edu (Jason Brazile) (05/29/91)
I have an ET4000-based card called "Ultra VGA". In the manual, they indicate
that oscillator speeds are:
25.175 28.322 36.000 40.000 44.900 62.000
However, "clock ET4000" tells me that they are:
25.2 28.3 32.5 36.0 40.0 44.9 55.6 64.4
I do not have a lot of faith in the manual because it is so poorly written
but it seems like numbers would be hard for them to get wrong. Any comments
or suggestions?
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jason@ponder.csci.unt.edu Jason Brazile
{iex,supernet}!solo!jason "people say i'm apathetic
University of North Texas but i don't care"roell@informatik.tu-muenchen.de (Thomas Roell) (05/31/91)
> 25.175 28.322 36.000 40.000 44.900 62.000 >However, "clock ET4000" tells me that they are: > 25.2 28.3 32.5 36.0 40.0 44.9 55.6 64.4 > >I do not have a lot of faith in the manual because it is so poorly written >but it seems like numbers would be hard for them to get wrong. Any comments >or suggestions? I would rather trust clock.exe. clock.exe just programms the videochip for a common display mode, and the counts the time needed a horizontal frame. Every number counted is compared to the wellknown of the 28.322 quartz. But throught the limiation of this method only about 3 numbers are sigificant. At higher quartzes there may be even higher errors +- 0.5. But clock.exe definitively shows all frequencies available. - Thomas -- _______________________________________________________________________________ E-Mail (domain): roell@lan.informatik.tu-muenchen.de UUCP (if above fails): roell@tumult.{uucp | informatik.tu-muenchen.de} famous last words: "diskspace - the final frontier..."