On 11/01/11 14:39, John Baboval wrote: > I don't know of any reason for it.
I'd guess it is alignment, probably not important for all color depts. Maybe it is a good idea to do all sanity checks in the VBE_DISPI_INDEX_ENABLE branch where the actual mode switch happens. Then you already know xres, yres and depth when applying the checks. You can calculate the scanline length, then check the scanline alignment instead of being overly strict on xres in high color modes to satisfy alignment requirements in low color modes. You can also simply calculate how much memory the video mode needs and check that against the configured video ram instead of pulling xres and yres limits out of thin air. cheers, Gerd
