Ok this is not a thread asking how you make one this is a thread asking for help to get the one I made working right.
http://forums.arcade-museum.com/showpos ... stcount=27
As you can see the Powerpak loads and it has played any ROM on it including a NES test cart that checked out ok assuming it can work that way.
Now you are probably wondering whats the problem.
It won't play all regular cart games, such as SMB3 as an original cart that works in a normal NES won't play but loading it with the Powerpak it plays fine.
So I could use some help figuring this out cause I would like to make it work with all carts.
Using the schematic from the PlayChoice and a pinout of the 72pin connector I hooked it up straight forward except on a few lines where on PlayChoice carts they go through a buffer. These lines would be VRAM /CE, PRG ROM /CE and CHR /A13, the buffer is a 74367.
It would also be nice to know how the M82 does its selecting.
Let me know what you think.
http://forums.arcade-museum.com/showpos ... stcount=27
As you can see the Powerpak loads and it has played any ROM on it including a NES test cart that checked out ok assuming it can work that way.
Now you are probably wondering whats the problem.
It won't play all regular cart games, such as SMB3 as an original cart that works in a normal NES won't play but loading it with the Powerpak it plays fine.
So I could use some help figuring this out cause I would like to make it work with all carts.
Using the schematic from the PlayChoice and a pinout of the 72pin connector I hooked it up straight forward except on a few lines where on PlayChoice carts they go through a buffer. These lines would be VRAM /CE, PRG ROM /CE and CHR /A13, the buffer is a 74367.
It would also be nice to know how the M82 does its selecting.
Let me know what you think.