Talk:INES Mapper 034

Isn't it possible to emulate this mapper as a single "mapper" (that is without distinguishing between BNROM and NINA) with the following setup :

• 1 PRG bankswitching register at $7ffd and $8000-$ffff
• 2 CHR bankswitching registers at $7ffe and $7fff, initialized to 0 and 1 respectively on powerup.

That way, the BNROM game starts up with the right CHR banks switched in, bus conflicts aren't emulated, but aren't required for emulation anyways. The NINA game should work well as long as it doesn't write to $8000-$ffff (I fail to see why it would do this).

The only problem is that this doesn't support BNROM + SRAM extension, but no game was ever made using this anyways. Bregalad (talk) 14:20, 17 March 2014 (MDT)