Add Verilog implementation

[pinobatch]

Can we get an an implementation of this mapper in Verilog so that it'll run on a PowerPak? I'm aware that the PowerPak has only 544 KiB of RAM, but perhaps it could be made to work by using half of the 512 KiB of RAM that most mappers allocate to PRG ROM.

[keyboardspecialist]

Can we get an an implementation of this mapper in Verilog so that it'll run on a PowerPak? I'm aware that the PowerPak has only 544 KiB of RAM, but perhaps it could be made to work by using half of the 512 KiB of RAM that most mappers allocate to PRG ROM.

Unfortunately, I don't know Verilog or have any hardware to test on. If you can find the source for Loopy's MMC5 mapper for the PowerPak, that is probably the best place to start. I found the source for the Everdrive's MMC5 mapper, but I don't know how much modification is required to run on a PowerPak. This mapper was never intended to run on real hardware, so changing it to fit the specs of those devices isn't an issue. My main goal was getting CHRRAM support. Expanding the PRGRAM was just a bonus.