I guess I spoke too soon about the voodoo.  I found the following two links:

http://www.tkk.fi/Misc/Electronics/faq/vga2rgb/timings.html
http://www.linuxtag.org/1998/software/howto/XFree86-Video-Timings-HOWTO

And with the linux utility gtf, I was able to come up with a new set of
timing parameters for 1600x1000:

htotal=2144
hfp=104
hsyncwidth=168
vtotal=1035
vfp=1
vsyncwidth=3
vcomposite=8
pixclock=13314
xres=1600
yres=1000
hz=60

The only one I wasn't able to come up with a good new value for was
vcomposite, so I left it the same as for 1680x1050.  It didn't seem to
be harmful, at least.  Unfortunately, the screen was still painted in
the upper left-hand corner or the display.  So using the right timings
wasn't the silver bullet I had hoped.  I suppose at the very least I
know how to read a modeline now.

Seth

Seth Galitzer wrote:
> Thanks for the info.  I tried the built-in 1600x1024 and it looked
> pretty awful.  I suppose we'll have to stick with the SR2FS.  It
> actually gives us more headroom for future expansion so it will
> eventually pay off.
> 
> I'm still looking for good documentation on how to calculate video
> timings, but it seems largely like voodoo so far.
> 
> Seth
> 

-- 
Seth Galitzer
Systems Coordinator
Computing and Information Sciences
Kansas State University
[EMAIL PROTECTED]
785-532-7790
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