This has been really bugging me.
So bottom line is im making a repro of Rob Vs. Term, using 2 27c301s. Ive used 27c301s and know how to wire them both PRG and CHR.
The problem im having is the game starts up, no problems but im getting graphical artifacts on the side. After some investigation its a scrolling issue. The game has Horizontal mirrioring (from Nestopia). When I run it in nesticle with horizontal scrolling only, I mostly get the issue that my NES is replicating (not 100% but close). When its set to vertical in nesticle, no problems.
It might have been a bad board, so I got a new TSROM board, same problem. Its revision 08 if that means anything. Anyway whats up with this repro?! Has anyone made this game with this issue? I even asked if I can mod it like TSLROM for it to work, but was told thats prob not the issue.
So its not the board, or my wiring. Is it something in the code? Is there a different version of the rom where its fixed?
*EDIT* I found and DL'ed another rom of it. In Nesticle AND the Famirom it notes that it supports FOUR SCREEN mirroring. Altho when split, both roms code is identical. The only difference is the header thats removed.
So bottom line is im making a repro of Rob Vs. Term, using 2 27c301s. Ive used 27c301s and know how to wire them both PRG and CHR.
The problem im having is the game starts up, no problems but im getting graphical artifacts on the side. After some investigation its a scrolling issue. The game has Horizontal mirrioring (from Nestopia). When I run it in nesticle with horizontal scrolling only, I mostly get the issue that my NES is replicating (not 100% but close). When its set to vertical in nesticle, no problems.
It might have been a bad board, so I got a new TSROM board, same problem. Its revision 08 if that means anything. Anyway whats up with this repro?! Has anyone made this game with this issue? I even asked if I can mod it like TSLROM for it to work, but was told thats prob not the issue.
So its not the board, or my wiring. Is it something in the code? Is there a different version of the rom where its fixed?
*EDIT* I found and DL'ed another rom of it. In Nesticle AND the Famirom it notes that it supports FOUR SCREEN mirroring. Altho when split, both roms code is identical. The only difference is the header thats removed.