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Last updated on Oct-18-2019 Download

1MB MMC5, can the NES handle it?

1MB MMC5, can the NES handle it?
by on (#78439)
From what I understand the MMC5 can handle 1MB PRG, but I don't think I've ever seen a game that was big. There is one old fan translation of FF3 that has 1MB PRG, but it doesn't work on Nestopia.

by on (#78440)
I think the FamiCom remake of Final Fantasy VII was even bigger than 1MB total PRG and from what I know, it plays fine on the system. Emulators are a different story ;3

by on (#78445)
There's no limit to the amount of PRG/CHR that the NES can handle.

by on (#78553)
Don't test with Nestopia. :D

by on (#82243)
qbradq wrote:
Don't test with Nestopia. :D


Is that DMC-triggered false-positive joypad strobe thing particularly bad with NEStopia? I encountered it earlier today, and it made me most vex...

by on (#82244)
Dr. Floppy wrote:
qbradq wrote:
Don't test with Nestopia. :D


Is that DMC-triggered false-positive joypad strobe thing particularly bad with NEStopia? I encountered it earlier today, and it made me most vex...

Well, Nestopia actually emulates that bug, which is a GOOD THING.

by on (#82245)
I believe the MMC5 pinout shows an address line to PRG for a ROM as big as 1 Megabyte. I'm not sure if the ROM socket on any PCB has it connected though. Why do you need 1 Megabyte of PRG? You can accomplish this with MMC1 being wired similar to SXROM/SUROM. Or by wiring up a UxROM type board to have more PRG register bits.

by on (#82246)
MottZilla wrote:
I believe the MMC5 pinout shows an address line to PRG for a ROM as big as 1 Megabyte. I'm not sure if the ROM socket on any PCB has it connected though. Why do you need 1 Megabyte of PRG? You can accomplish this with MMC1 being wired similar to SXROM/SUROM. Or by wiring up a UxROM type board to have more PRG register bits.


And you can get more then 1MB is you then use the CHR-ROM lines to switch the 512K banks, and then just use CHR-RAM.