Quote:
Originally Posted by strim
That'd be quite difficult due to how uaegfx driver communicates with this native RTG card. The interface on UAE side would have to be redesigned.
|
I don't think it needs anything else than moving those trap-instructions from UAE boot rom to end of VRAM (last 32k or so is reserved for resolution list and other stuff). UAE Boot ROM is AOS only.
It uses A-traps but because they don't trigger any real exceptions (if it is located in call trap address range), no special handling needed.
But if OS drivers really want IO access only (instead of register based jumps to mysterious non-existing code), it can be done easily: write parameters to reserved memory region, write command code to memory: command executes.