According to the SNES manual, for HiROM, the cartridge SRAM is located in banks 0x30 to 0x3F, offset 0x6000 to 0x7FFF. This implies BA4 and 5 are 1, BA6 is 0, A13 and 14 are 1, and A15 is 0.
But the MAD-1 chip doesn't have any connection to BA4 at all, making the banks for SRAM go from 0x20 to 0x3F. I've also confirmed this on a HiROM board that uses an LS139 decoder.
Does the SNES care if the SRAM is active during that memory region, and if so, why? Thanks for the help!
But the MAD-1 chip doesn't have any connection to BA4 at all, making the banks for SRAM go from 0x20 to 0x3F. I've also confirmed this on a HiROM board that uses an LS139 decoder.
Does the SNES care if the SRAM is active during that memory region, and if so, why? Thanks for the help!