> Last time I tried it it was hitting the: > logerror("Protected DMA not handled for this game (dma_offset %x)\n", > get_safe_token(device)->dma_offset); > in naomibd_get_dmaoffset. I should try again though. What do you do in demul when SC > is 0 for that game?
ignore it. it's not "Actel" type cart and can't be used for "non-actel" games the same way. the same as for derbyox for example. some other games didn't set that bit too for dma...
for "non-actel" carts this bit using for changing roms mapping, some mappings is the same, some diferent (for example 800000 moved to 400000 etc), some (like World Kicks) wanted both different mappings to work...
As Deunan said, there must be some fixed lookup tables for roms mappings or maybe the same fixed one...