I have a strange problem with US Castlevania PRG1 on a Famicom AV using a tototek nes to Famicom adapter. The title screen looks fine, the intro looks fine, but when the game starts, the screen flashes white and the background colours look off. When I enter the castle, the background turns pink. When I keep playing, on level 2 where the traps are, the screen refuses to scroll anymore.
I though I had a cart with a bad rom, so I bought another one and I have the exact same problem!
I know there are issues getting Castlevania 3 to work on a Famicom, but this is the first I've heard of a problem with CV1. I've been looking for at the pinouts for the cart and the adapter, and I wonder if there's something I need to alter on the adapter side, similar to the CV3 mod where you add resistors.
I'm not convinced that I've somehow managed to get 2 bad carts, so I suspect the adapter at the moment. The adapter works with other games, including CV2 and both Zelda games, although I don't have another UNROM game to test. I also dont have another console.
Has anyone encountered anything like this before? I've cleaned the pins with alcohol, they were already pretty clean to begin with. And on the first cart, I reflowed every solder joint and it didn't help.
Edit: I recorded some videos. The first one shows the white flash and the strange colours of the statue. Although the background inside the castle didn't turn pink this time. The second one shows the pink background appear and disappear as I went up and down stairs. And the third is a new problem, rather than the game refusing to scroll horizontally on level 2, it slowed right down to a crawl.
https://youtu.be/SSTX1x3xy3U
https://youtu.be/iSTrOEMtIvI
https://youtu.be/a1I0Gh0pklw
And as I was uploading these videos, I left the game at the title screen with the demo looping, then it froze after 10 minutes.
I though I had a cart with a bad rom, so I bought another one and I have the exact same problem!
I know there are issues getting Castlevania 3 to work on a Famicom, but this is the first I've heard of a problem with CV1. I've been looking for at the pinouts for the cart and the adapter, and I wonder if there's something I need to alter on the adapter side, similar to the CV3 mod where you add resistors.
I'm not convinced that I've somehow managed to get 2 bad carts, so I suspect the adapter at the moment. The adapter works with other games, including CV2 and both Zelda games, although I don't have another UNROM game to test. I also dont have another console.
Has anyone encountered anything like this before? I've cleaned the pins with alcohol, they were already pretty clean to begin with. And on the first cart, I reflowed every solder joint and it didn't help.
Edit: I recorded some videos. The first one shows the white flash and the strange colours of the statue. Although the background inside the castle didn't turn pink this time. The second one shows the pink background appear and disappear as I went up and down stairs. And the third is a new problem, rather than the game refusing to scroll horizontally on level 2, it slowed right down to a crawl.
https://youtu.be/SSTX1x3xy3U
https://youtu.be/iSTrOEMtIvI
https://youtu.be/a1I0Gh0pklw
And as I was uploading these videos, I left the game at the title screen with the demo looping, then it froze after 10 minutes.