In terms of the pcb redesign, would doing an nes adapter be feasible as an alternative? The other item that might be attractive to people is a gamegear adapter.
Tried the bennvenn cart, but after making the changes it gets past the “Blankcheck” and erase phase but then stops at the flashing stage. On the plus side, it didn’t actually erase the cart, so it still functions as before.
Any additional suggestions?
Edit: Could the fact that MBM29F033C expects 256 bank be an issue? Or does the flashing effectively ignore that and just use whatever it detects the cartridge has (it correctly detects the cart is 128 bank)