Normally PC's have their video ram mapped to 0A0000h - 0BFFFFh. Now most videocards (even ISA / VLB ones) do have more than 128K ram ... and to use that RAM by means of bank switching somehow sucks. Since Windows/Linux somehow manage to access that RAM as one block 'linear frame buffer' There must be a way to do so ... it is just that i don't know how. I wrote a driver for MINIX to use my video card with it, but i couldn't really find any info on doing the Linear buffer trick ... Has anyone got info on how to do that ? I Guess it is some Mainboard dependant trick ?? Where do i get that info ??
PS: I did crawl through the 100 Meg _HELL_ of the source of Xfree86 ... got confused as to almost forget my name, but i didn't find anything :-)
SUSE LINUX 7.3 PRO - The world starts behind windows