VP1 revision conversion

[slk486]

Anyone know if it is possible to change eproms on an original revision VP1 to the new version? Or are their hardware differences also?

Cheers

[alamone]

You should be able to swap the 4 PRG eproms from old to new version.
You don't even need to go through the cart swap procedure on the SPI mobo.

[slk486]

Thanks! Are they socketed?

[alamone]

They are socketed. Just replace the 4 EPROMs at the bottom

[slk486]

Awesome. Tar very much

[PC Engine Fan X!]

Yep, it's fun to play the Viper Phase 1 U.S.A. cart from time to time. It was Fabtek whom officially distributed VP1 for the North American arcade market back in 1995. My local arcade, The Electric Underground, had gotten in a VP1 U.S.A. conversion kit complete with full-sized backlit marquee to draw in the arcade shmup fans. Considering that it was setup on a generic Dynamo cab, the top ten scores & high score initials were always listed to try beat them. I did manage to place in that top ten rankings back in the late 1990s until it finally closed their doors for good in May of 1998.

PC Engine Fan X! ^_~

[slk486]

Hey alamone. I'm just about ready to do this, but do you know if any rom set will be compatible or if I need the rom region to match my PCB?

[alamone]

Use the same region set as your SPI board.

You can hex edit the region too, but that's a bit more advanced.
I did that to get a 2 loop Japanese NV.

[slk486]

Use the same region set as your SPI board.

You can hex edit the region too, but that's a bit more advanced.
I did that to get a 2 loop Japanese NV.

Ok, good to know if I ever get past level 2

I think I have the world version, but is there any way to know for sure?