i literally just said mgba doesn't support the roms in the quote by endrift.
The unimplemented opcode calls into the Switch firmware for the OS's name black list, it is always failing to clear this check. the rom is meant to randomly replace the...
The game is made to rely on features exposed by the custom switch gba emulator, which implements several capabilities not present on the arm core that the original hardware used.
None of us have any intention to get these releases fully working...
Sigmar star dx's cart seems to be in the same boat, eeprom in the headers, patched to sram/fram.
just like with Shantae's steam release included rom, it is not patched - but it doesn't have the internal name or romcode either.