Tag: OCS

So, to continue from Part 1, the rest of additions in Denise. Denise bitplane updates First, of  course, the bitplane count needs to be upgraded from ECS’ 6 bitplanes to AGA’s 8 bitplanes, together with everything dependent on it, like collision detection for 8 bitplanes, two additional bitplane output buffer registers, playfield support, etc. Quite a lot of code changes in this step, but not hard to do – basically, I just followed the existing code and…

So now that the first beta version of minimig-AGA for the MiST board is out, I thought I’d write a few words describing how I went about implementing this. In short – it was easier than I expected, but with a few very tricky parts. A little background As you may or may not know, Jakub Bednarski (yaqube) already upgraded the minimig design with AGA capabilities a while ago, but the code was never published,…