9fans archive / 2000 / 12 / 36 /    prev next

From: forsyth@cal...
Subject: Re: [9fans] VGA Hell, what else?!
Date: Thu, 7 Dec 2000 09:56:02 0000

in general, without the documents for the precise chips you've
got, you stand no chance of working with the vga code,
not because it doesn't use symbolic names, but because even
then you'll have no idea what the interpretation is, unless you
also copy the contents of each manual's register description
into the code as well.  different register numbers are used differently
by SVGA implementations, and in particular, ET4000 bears no
resemblance to S3 in the chip-dependent set (even within the S3
range you need the chip-specific books).  with the book to hand
(which as i've said you need anyway), for my own part, i find the use of numbers
eliminates a trip to the index for each one.  i suspect there's not
a standard naming scheme even for the common (ha!) subset that's VGA.

in fact, even with the documents for the precise chip, you've
still got your work cut out (in general, probably not in the case you mention).

>>I'm suffering from dreadful flicker trying to use 1024x768x8 on a

i find that sometimes happens to me when i drink too much,
which happens (funnily enough) each time i've had to work with svga.