Flsahrom cartridge

I've build myself a flashrom cartridge to be able to play some other games than Sonic The Hedgehog, James Pond, Enduro Racer and Moonwalker.

For flashing the rom, I am using an arduino uno.
I am planning on putting the programmer on the cartridge (with an arduino NANO) so I don't have to remove the rom from the cartridge when I want to flash a new game on there.

The cartridge can play games up to 512k, since there is a 315-5235 mapper on there.

I am planning on looking into building a mapper with a CPLD that can run bigger games.
 

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