home *** CD-ROM | disk | FTP | other *** search
-
- 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).
-
-