PowerPak

PowerPak emulates mappers used in NES games, but not always perfectly.

Fixed in Mappers V1.11

 iNES 4 - MMC3 - fixed bad irq
 iNES 9 - MMC2 - fixed bad chr switch
 iNES 64 - Rambo 1 - mostly fixed bad irq
 iNES 119 - TQROM (MMC3 + 74HC32) - fixed bad chr switch

iNES 3 - CNROM and clones - limited CHR size

CNROM supports up to four banks (32 KiB) of CHR ROM. PowerPak uses the bank number mod 4. This breaks Panesian games that use a compatible board that supports larger CHR ROMs but is otherwise functionally identical to CNROM.

iNES 4 - MMC3 - no wram disable

Low G Man needs wram disabled, but the PowerPak doesn't support the NES 2.0 extensions needed to specify 0 KB PRG RAM in the iNES header.

Older versions of MMC3 would corrupt PRG RAM when turning IRQs on or off because writes to $E000-$FFFF also went to $6000-$7FFF.

iNES 5 - MMC5 - known bad

Games will not start, mapper not complete yet.

iNES 71 - Camerica

Micro Machines has major graphics problems, could be FPGA pins are wrong.

Fire Hawk and Fantastic Adventures of Dizzy show the same problem.

Many of these are very likely bad roms.