NES 2.0 Mapper 516
From Nesdev wiki
INES 2.0 Mapper 516 is used for the two Brilliant Com Cocoma Pack cartridges from EduBank. They consist of an MMC3 clone (AX5202P) with an additional PAL.
- $8000, $8001, $A000, $A001, $C000, $C001, $E000, $E001; addresses where CPU A4 is low: As normal MMC3. Note that the PRG and CHR banks are limited to a 128 KiB inner bank.
$8010: A~[1xxx xxxx xxx1 CCPP] |||| ||++-- Select 128 KiB outer PRG bank (i.e. PRG A18 and A17) ++---- Select 128 KiB outer CHR bank (i.e. CHR A18 and A17)