INES Mapper 079
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iNES Mapper 079 is used to designate the NINA-001/3/6 boards.
Here are Disch's original notes: ======================== = Mapper 079 = ======================== Example Games: -------------------------- Blackjack Dudes with Attitude F-15 City War Krazy Kreatures Registers: --------------------------- Range,Mask: $4100-5FFF, $4100 be sure to make note of the mask -- $4200 does not map to the register, but $4300 does. $4100: [.CPP PCCC] C = CHR Reg (8k @ $0000) P = PRG Reg (32k @ $8000) Note the high bit of the CHR Reg.
The largest game in BootGod's database is 64k/64k and its hardware only has 4 bits of state, mapped as
$4100: [.... PCCC] with the same meaning as above.
Note that FCEUX's implementation maps the register as
$4100: [CCCC XCCC] X = PRG Reg (32k @ $8000) all 8 bits = CHR Reg (8k @ $0000) $8000: [CCCC CCCC] C = CHR Reg (8k @ $8000)