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That will not work. See my second post in this thread. The tutorial is old not finished though.

FF's are suggested but probably not required. In fact a little trivia for you: when an eprom is blank, it contains all 1's. That's because when tripping fuses to change the data, they can only be...

It's possible that the patch you mention will work for battery backed sram carts. :nod:

Either should be fine. If you really want to get the 27c320 working, then you will have to disconnect B8 and B9 from U3. Then connect them to the properties on your eprom. Also, make sure that no...

Hmm... I see a few problems here, and I do that know how useable the board it's going to be. First of all the address pins of the eeprom cannot be connected to any other logic. That goes for pulling...

I am fairly certain that the board itself is labelled wrong. I have come across one of these before. Even though the front side of the board is labelled the 'A' side, it is not. Do not solder the...

Maybe some of the consoles have TMSS and others do not? Are all of the Genesis consoles official and not clones?

I read that facebook post and I thought they said it was working on a different Genesis. It sounds like a coding problem which I couldn't help with.

Thanks a lot. It looks like the checksum in the header is incorrect though. At least, Kega Fusion says so. What system or version did you run this on? Genesis model 1, 2, 3, Nomad? I think the model...

Hahah, hex editing can be daunting. Would you like to upload the modified version of your Golden Axe 3 ROM? I think someone could find it useful. I have never tried getting taht one to work.

I...

Thread opened by request.



Sorry I never responded. I must have missed your post. The double posting rule pertains to short periods of time between posts. If no one seems to respond within a...

I am referring to the logical locations for each addressable portion of memory and not the physical locations. No two chips can be enabled at any one time, so there are three enable pins which are...

OK. I think the sram is mapped at the location after the 3MBytes, so you need to connect the enable pin for the upper rom to the sram so it is mapped at the 2MB position. Im Not on my PC or near a...

You burned mega man? Did you use the sram modded version?

Ok, WSB98 is a 3MByte game while Mega Man and Centry are 2MByte games. That being said, I think you will only need one eprom. You should start by removing the two ROM chips and figuring out which one...

What game was it and what game do you want to put on it?
The smaller chips are for mapping the ROM(s) and RAM to specific locations in the full scope of the console's accessibility.

Cool. Glad you found the problem.
The Red screen was most likely a region problem, but it could read the wrong region if it was a pinout problem too.


uCon64 also has a GUI taht you can find...

If you are confident that none of the address pins will be hanging, then padding is not needed.

Go ahead. All you need to do is make sure the higher address pins are going to their respective pins on the cart edge or tied to ground.
Another option which I don't condone is to duplicate the ROM...

I just checked the header of both ROMs and neither claims to have access to SRAM.

A18 and A19 have to go somewhere. Since MUSHA is only 512KBytes, you don't need them. You can either connect them to the carts edge (B7 and B8) or to Ground. Your choice.

The ROMs do not have "save problems". beggar Prince has a custom hardware mapper that places ROM and RAM is bizarre locations within the memory map. The header of Beggar Prince states taht ROM starts...

I don't know. I do know that the program itself has been dumped and disassembled on SMS-Power. So if we found an acceptable PLA, then writing a code for it would be a piece of cake.

I want to ask...

Very cool. Your adapter works then? How about the button?
I may have to make my own if it ends up being that clean looking.

Sorry I missed your question. it seems that it was a while ago.
There is only me for answering questions.



Thats awesome. Can we get some photos? Im interested.