Anyone know how to change NES ROM mapper info?

[ventrra]

I have a few hacks and a homebrew on my HD that are supposed to use one mapper, but emulators show a different one for some reason and refuse to run the games.

Anyone else had this problem?

[ventrra]

Nobody? Anyone know of any resources then that maight help?

[scooterb23]

I used to have a program, albeit a couple of years ago...I think it was called something like cajoNES...it ran in DOS, but it could choose between a few different types of mappers...sorry I can't help more...it's been too long ago.

[zektor]

As for changing a mapper info, I really can't tell you. Have you tried any other emulators? Which ones have you used so far? WHat rom is it that you are trying to run? I may have it and it may run fine under something else. Let me know.

[ventrra]

Thaks for the help guys. Believe it or not, scooterb23, looking for the program that you were talking about led me to a program to do what I was looking to do. I wound up at Zophar's Domain's NES Utilities page http://www.zophar.net/utilities/nesutil.html where there were a few tools (including cajoNES, by the way).

@zektor: I sometimes think that I have every NES emulator ever made :roll: The list of emulators that work on my PC include: FCE Ultra, JNES, NEsticle95, NESten, NEStron, Nintenulator, NNNEsterJ, RockNESX, and SMYNES. There are quite a few that don't work for me. The thing is that I like to use the emulators that I feel have the best GUI : SMYNES and RockNESX. There were a few hacks that I have (i.e.: Super Mario Destination, Super Castle Mario, and a few others) that, for some reason, wouldn't run. Strangely enough, it seems that the problem really is that the headers are wrong (well, wrong for the emulators that I'm using, anyway).

[zektor]

But you don't have the BEST nes emulator (at least in my opinion)

VirtuaNES:

http://virtuanes.s1.xrea.com/

Supports lightgun emulation (crosshair w/mouse) and a ton of mappers. It has the highest compat rate as far as I have seen. Try it out man...

[ventrra]

But you don't have the BEST nes emulator (at least in my opinion)

VirtuaNES:

http://virtuanes.s1.xrea.com/

Supports lightgun emulation (crosshair w/mouse) and a ton of mappers. It has the highest compat rate as far as I have seen. Try it out man...

I managed to get the emulator even though the site link doesn't seem to work. Not bad. Seems a little odd setting up, but it works. Thanks, Zektor.

[zektor]

It is my favorite NES emulator as of now. If you put a disksys.rom in the same directory as the emulator you will be able to play FDS games as well. Be sure to use the launcher (ctrl-l) and let it scan your rom directory. Then, from then on, use it to select your games. Much faster than the emulator having to scna the roms directory every time you change/load games. So, it did work with your strange mapper roms?

[ventrra]

If you put a disksys.rom in the same directory as the emulator you will be able to play FDS games as well.

I already had the disksys.rom. I had a few FDS games (27 of them), but this DOES seem to work with them pretty well.


Be sure to use the launcher (ctrl-l) and let it scan your rom directory. Then, from then on, use it to select your games.

That was one of the first things that I did :D I much prefer to use a GUI rather than a "load" box.


So, it did work with your strange mapper roms?

Some of them, but for others IT has a pop-up that tells me that the headers aren't correct. A good example of this is a hack called "Super Duper Bros". It says it uses mapper 64, but since it's only a SMB graphics hack, it should use mapper 0 like it does.
The pop-up reads a bit funny, though. It says:
Because a NES header is illegal.
there can be the thing that doesn't work normally.
Do execute?


I've noticed a bit of an oddity about the light gun system on it. It seems (at least on my PC) that it targets just a bit behind the object that I'm shooting at. I.e.: If I shot at a duck in Duck Hunt, I actually have to aim just behind it to hit it.

[ventrra]

BTW: Are there any other really good emu's for other systems that I might not have heard much about?