Wanted some feedback. I have a copy of Flicky which is a 1MB (128kb) rom, no battery backed save. This cartridge doesn't work for some reason and I figured a good solution would be swapping the ROM chip on a functional board - I thought donor of Barney Hide & Seek 8MB (1mb) rom, no battery, would be suitable but I thought it might be incompatible because of the alloted ROM size. I see here that some PCBs can support larger ROM sizes, is the reverse possible (donor having larger max ROM size tolerance swapped with a lower ROM size).
Here are the respective PCB photographs.