Let's collect configurations for Roell X11R4...

[Martin J. Schedlbauer]

I've configured X11R4 for the Orchid ProDesigner. Here's what I did.

1. You need to look at the directory in /usr/lib/X11/config/X386
for the README and Xconfig file. The job is to basically modify the
Xconfig file for you VGA and display.

2. Step One involves finding the crystal speeds. For the Orchid
ProDesigner Plus (512k) with the ET3000 chip set these are:
	28 25 35 45 65

3. I set it up for 800x600 mode. I actually specified the resolution as
846x606 or whatever the absolute max is. It works, but it depends on you
monitor.

4. The video timing for at 14" VGA monitor with a max scan rate of 36kHz
and 100kHz vertical:

	using the 35 crystal: 35/36 * 1000 = 972 rounded to nearest
multiple of 8 = 976.

5. The other two you can play with. Start them around 850 and 920.

So you get for horizontal timing: 800 850 920 976

and vertical timing, use what they do and tweak the middle two
paramters. For the extended setup use

H: 846 850 920 976	and V: 606 600 605 631

It works, but I haven't found it to be substantially faster than X11R3
from ESIX.

	...Martin


Martin Schedlbauer				(mschedlb at ulowell.edu)
Institute for Visualization and Perception Research
Department of Computer Science
University of Lowell, Lowell, MA 01854		(Tel: (508) 934-3612)