GoKawiilWolfenstein 3D – Gameboy Color
On custom cartridge with co-processor
Source code and hardware schematics are available on Github: https://github.com/agranlund/wolf
Cartridge Rev.D
The new cartridge revision is fully working and runs Wolfenstein just as good as the previous revision.
It is identical to Rev.C in terms of functionality but use an ATF1502 CPLD instead of Nintendo MBC1.
I can’t think of anything more I want to change so I consider the project complete at this point!
Implementing MBC1 on a CPLD
Boards with the new design arrived and after much debugging I finally managed to get ROM bank switching to working correctly. Getting RAM banks working should be pretty much the same thing so I’m pleased with the progress so far.
Quite happy that I can now make Gameboy cartridges using only off-the-shelf parts and don’t have to salvaging any chips from official Gameboy games.
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