home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
PC Spiel 1995 March
/
PCS0395.ISO01.iso
/
tools
/
002
/
bugs
next >
Wrap
Text File
|
1993-10-22
|
2KB
|
48 lines
Log of BUGS and problems with the Universal VESA VBE
----------------------------------------------------
This file documents known problems with the Universal VESA VBE. I have done
my best to try to fix all know problems, but some still persist and may
well be limitations in the particular video controller hardware and
may not be fixable.
Trident 8900 chipsets:
- The Trident 8900 chipset does not seem to be able to page flip
the 1024x768 16 color video mode, even though it works for all
other video modes. Probably a bug in the chipset.
Cirrus CL-GD542x chipsets:
- The Cirrus 5422 chipsets will not allow access to > 256k of
memory in 320x200x256 color standard VGA mode. There must be
some way of enabling this, but I have not worked it out.
S3 86c911:
- The S3 86c911 has some severe bugs in the extended CRT addressing
code in 1024x768 16 color modes. Page flipping works but looks
disgusting (bottom 1/8th of the screen is trashed). This bug is
fixed in the 924 and later chipsets.
Video7 chipsets:
- The video7 chipsets do not work presently. I am getting a Video7
board to test so should be able to fix the problems for a later
release.
ATI Technologies chipsets:
- The newer ATI boards seem to have problems with the page flipping
functions. I am working on this but I need to find some test ATI
boards to work with.
QEMM memory manager:
- QEMM does some wierd things with the video BIOS, so you may encounter
problems when using the Universal VESA VBE with QEMM installed.
You will need to use the exclude option to get it to work at all
(see the readme file).