VGA VRAM Wrap
Posted: Sat 24 Nov, 2018 5:44 pm
Hi, Thanks again for this great emulator.
I think the VGA VRAM is not wrapping correctly on mode 13, (the one with only 64 Kb).
Well, it wraps, but It always thinks the vram is 256 Kb (mode X) and I have to scroll 4 pages down until it reaches address 0 of VRAM again.
Here you see a screenshot from Dosbox (it works the same on real PC), and a screenshot using PCem, Also include a test program.
Thanks a lot.
I think the VGA VRAM is not wrapping correctly on mode 13, (the one with only 64 Kb).
Well, it wraps, but It always thinks the vram is 256 Kb (mode X) and I have to scroll 4 pages down until it reaches address 0 of VRAM again.
Here you see a screenshot from Dosbox (it works the same on real PC), and a screenshot using PCem, Also include a test program.
Thanks a lot.