Hello all, I am starting my MSX2 development adventure and I am playing around with modifying this disassembled version of Metal Gear. After calculating how much space is left across banks 0-F in the MegaROM mapper, there is only 1.17KB available. It would be nice to increase this amount, if possible. Is there any way that I could use a different mapper or anything to get more ROM space or is it not possible? Any help would be greatly appreciated!
Of course it's possible.
You can keep the Konami SCC mapper, and increase the rom size up to 512Kb.
Beware that you will need to have (2^n) pages, so your choice is either 256Kb or 512Kb.
Thanks Metalion. All I did was create empty banks that go from 0x10-0x1F so that the ROM is padded to 256KB for now. Is that all I need to do and I can switch between the banks by setting the appropriate mapper bank? The 256KB ROM I generated was able to boot on openMSX without issues so I'm assuming it's working as intended.
