Hiya,
Yep both the AGA/RTG versions do everything in FASTRAM and only talk to CHIPRAM when then have to because CHIPRAM is so slow. If you use Paula it has to use CHIPRAM for the sound of course but for a sound card on a Mediator I assume it doesn't need to (you'd need to check the AHI docs to find out for sure). The AGA version only writes to CHIPRAM once per frame to update the screen, obviously the RTG version skips this step
