>> The motherboard is a 486/33, AMI BIOS (12/12/93), not sure of
>> the chipset (SIS I believe). If anyone has ideas or has had
>> similar experiences, I'd appreciate hearing from you.
>The framebuffer memory on your video card is being cached. You need to
>disable caching of that range of memory, in the AMI BIOS setup.
>David Wexelblat <d...@mtgzfs3.att.com> (908) 957-5871 Fax: (908) 957-5305
>AT&T Bell Laboratories, 200 Laurel Ave - 3F-428, Middletown, NJ 07748
The stated problem is more akined to a server problem rather than
a caching problem. The clue is that when the machine is running
with the internal cache disabled the graphic commands are probably
not being delivered fast enough to the cards. In the S3 928 databook
is not well stated how to determine when the graphic engine is
free for doing bitblts at least is different than the old S3 911 cards.
The S3 928 graphic queue is 16 entries deep and the S3 interface provides
for checking only 8 queue entries. For bitblt operations, the proper way to
wait is to check for the graphic engine to be idle, if you don't you will
get strange behavior.
At any rate we have tested the #9 S3 928 VLB with a fast 486DX266 and
found no such anomalies with XS3.
Since, the stated problem is with a commercial product I would suggest
to contact #9 and ask them if they have a solution to the problem.
Must say that #9s technical support is top-notch.
Hope this helps,
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Amancio Hasty |
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