Ape Cosplay
Enthusiast
Cart wouldn't be detected at all.
Quickly found the PLD with a DT_U9 label was completely dead (all ouputs always high).
This is how I discovered very few PGM PLDs were actually dumped...
I had to recreate it manually by probing lines and some educated guesses.
The PLD allows to use either 2 x 8bit ROMs or 1 x 16bit ROM for the main CPU (68000) code, some signals will not be used depending of what ROMs are installed in your cart but I reversed both cases.
Can't guarantee equations are 100% correct, I haven't played the game to the end, but at least it booted and first few levels had correct graphics and sound.
Attaching the jed file (GAL16V8 ) if that's ever helpful for someone.
Quickly found the PLD with a DT_U9 label was completely dead (all ouputs always high).
This is how I discovered very few PGM PLDs were actually dumped...
I had to recreate it manually by probing lines and some educated guesses.
The PLD allows to use either 2 x 8bit ROMs or 1 x 16bit ROM for the main CPU (68000) code, some signals will not be used depending of what ROMs are installed in your cart but I reversed both cases.
Can't guarantee equations are 100% correct, I haven't played the game to the end, but at least it booted and first few levels had correct graphics and sound.
Attaching the jed file (GAL16V8 ) if that's ever helpful for someone.
