> There are some non-mapped games who deserve some caution.
> Some old games like Theseus and River Raid does not implement
> lines A15 and A14 of the slot, this means the contents is replicated
> in 0000h,4000h,8000h and C000h. I would include them in a new class.
>
> Ricardo Bittencourt
this can also be solved with the mask trick:
entry mask action
#0000 #c000 access RiverRaid ROM at (address AND #3fff)
#4000 #c000 access RiverRaid ROM at (address AND #3fff)
#8000 #c000 access RiverRaid ROM at (address AND #3fff)
#c000 #c000 access RiverRaid ROM at (address AND #3fff)
Jon
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