help?? IBM S3 Valuepoint display

by Bryce Jon » Wed, 13 Sep 1995 04:00:00

I have an IBM Valuepoint which I am trying to get the onboard s3 video
to work properly. Currently cannot set the refresh rate high enough to
reduce flicker. It works but the dot clocks, despite setting up in the
PC's bios, will not exceed ~36.

Anyone have any ideas? I thought I have read about a bug?
/tia

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1. XF86Config for IBM ValuePoint (S3/ IBM 6324)

Hi friends,

I am having incredible difficulty setting XFree86 on this computer. The
hardware is a bit unusual. I haven't even been able to get X going with
the VGA (or SVGA) server-- in fact X hangs the system. Please escuse me
if the following description indicates my ignorance. I have several of
these computers and would like to get XFree86-3.3.1-14 working on them.
I have installed RedHat 5.0 straight out of the box.

IBM ValuePoint computer with IBM 6324 14in monitor.

On the _motherboard_ is an S3 805 chip, with ATT201c491 ramdac (this is
a real AT&T chip) but I do not know if there is a programmable clockchip
there (what would I look for?) There is 1MB of ram.

SuperProbe tells us:

Chipset: S3 86c805, C-step (Port Probed)
Memory: 1024Kb
RAMDAC: AT&T 20C491
15/16/24 bit DAC with gamma correction (with 6-bit wide lookup
tables (or in 6-bit mode)) (programmable for 6/8-bit wide lookup tables)

but X --probeonly says it cannot find the ramdac.

Thanks in advance for any hints,

John

--------------------------
John Terilla
Department of Mathematics
UNC- Chapel Hill
--------------------------

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