nesdev.org

I have seen one topic on each game but none said how they could be made?

has any one got them working with an eprom cart?
if so how if?

Mario adventure doesn't work on hardware or accurate emulators.

Dwedit wrote:Mario adventure doesn't work on hardware or accurate emulators.

It doesn't work on Nintendo boards, but I can see how it could be modified to work on a modified MMC3 clone that uses a divide-by-42 counter on A12.

tepples wrote:I can see how it could be modified to work on a modified MMC3 clone that uses a divide-by-42 counter on A12.

Does anyone know if any commercial MMC3 games break the scanline counter's rules on purpose (i.e. make the scanline counter function differently than intended on purpose)? If there isn't any, it would be really cool if someone could make an MMC3 clone without those limitations, which would be more flexible than the original mapper but still be compatible with games made for it.

It doesn't work on Nintendo boards, but I can see how it could be modified to work on a modified MMC3 clone that uses a divide-by-42 counter on A12.

You mean like this guy is doing?

This game also requires a special hardware modification to work. There's an extra 7$ charge to cover this modification.

tokumaru wrote:

tepples wrote:I can see how it could be modified to work on a modified MMC3 clone that uses a divide-by-42 counter on A12.

Does anyone know if any commercial MMC3 games break the scanline counter's rules on purpose.

I think Armadillo did. I'm not sure exactly tough.

It must work on nintendo boards as nes repros are looking for a tsrom donor... and look at hacked section on thenesdump.com They also say that it's tsrom?

There must be a way without using a modified MMC3 clone, where can you even get MMC3 clones?

It must work on nintendo boards as nes repros are looking for a tsrom donor... and look at hacked section on thenesdump.com They also say that it's tsrom?

There must be a way without using a modified MMC3 clone, where can you even get MMC3 clones?

Like I said in my previous post, he also says this:

This game also requires a special hardware modification to work. There's an extra 7$ charge to cover this modification.

What could that mean?

by any chance has anyone ever bought a Mario adventure off him?

Mario Adventure can be done on real hardware,has it http://www.gamereproductions.com has it

Tormenter wrote:Mario Adventure can be done on real hardware,has it http://www.gamereproductions.com has it

I just email him, Ill tell you what he comes back with!

pivotman wrote:It must work on nintendo boards as nes repros are looking for a tsrom donor... and look at hacked section on thenesdump.com They also say that it's tsrom?

There must be a way without using a modified MMC3 clone, where can you even get MMC3 clones?

It sounds to me like they are modifying official MMC3 boards to do IRQs differently than normal. You still need an official MMC3 board as the only place you'd find a cloned MMC3 is from China, and even then you need a MMC3 without the scanline counter defect.

If someone did come up with a MMC3 mod that fixed it, perhaps that Gradius 2 MMC3 hack would work better as the MMC3 scanline counter wouldn't be such a problem.

why don't we just order one and find out. If someone would like I would be willing to dump the cart to check for software differences and then take it apart and check for additional hardware, if its a PIC or something in there I could attempt to unlock (assuming it is locked) and dump it but there is a good chance I would fail at that.

So what would some possible hardware mods that would work be? Could it be as simple as adding a cap or something?

Even an MMC3 clone with the scanline counter defect would work with its /IRQ line disconnected if the IRQ logic would fit in a separate CPLD with access to the same signals. This could involve dividing PPU A13 by 42, dividing M2 by 113.667 like Konami boards do, or other approaches that you'll probably think of and describe below. A Schmitt trigger or something to smooth the A12 line going into the MMC3 wouldn't work because it needs accurate A12 to find which bank number to output.

Hey the guy from then nes dump said that it is a special rom made by the guy at nes repros.

I have asked him to send it to me, but im waiting on a reply.

He also said that you have to add a new ram chip thats a faster speed.
I asked him for the part number.

but other wise it is normal tsrom wiring.

He didn't say any thing about modding the mmc3.

Ill keep you guys up dated.