Thanks Ross, always the first to help n00bz! I knew I was going to screw something up by choosing a resolution of 368x230px
Anyway AFAIK this in not documented, I mean it's not clear that the lower DDFSTRT is the more sprites are lost to the digital limbo
I fixed the ECS now, I was so sure the problem was with sprites DMA and didn't check values properly!
But for the OCS bug... is there some way to fix it?