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Thread: SSV P1 & P2 EPROMS

  1. #1
    Paris-Dakar Rally Driver
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    SSV P1 & P2 EPROMS

    Been a good while since I last posted on this forum, but on to what's important... Ran a UniBIOS scan on my cart and several NG came up. Had me curious, so I opened it up and saw that the 2 P roms were eproms. The cart otherwise matches the images on the MVS scan site. Looked around here and didn't see anything similar. Any ideas?
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  2. #2
    Blame madman
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    Could be a repair. Post pics of both boards and we can tell you more.
    >

  3. #3
    Paris-Dakar Rally Driver
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    Sure thing, here ya go. Little pixelated, but all I have to work with right now is an iPad. I figured it was likely a repair job, but there was some things about the case that also seems odd.
    The label looks and feels like card stock that was printed and glued on. There was also a small metallic sticker over one of the screw holes with a QC stamp. Peeling it off left void stickers.

    image.jpgimage.jpg
    Arcade boards owned
    Neo Geo: MV-1, MV-1F (x2), MV-1FZ (x2), MV-4, Hyper 64 [Fighting]
    Stand-alone: Altered Beast, Rastan, P.O.W, SNK Vs. Capcom
    Latest addition: Sega Titan w/ Die Hard Arcade

  4. #4

    Neo Alec's Avatar
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    It sure looks like a repair.

  5. #5
    Mature's Make-Up Artist
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    Quote Originally Posted by Mishran View Post
    Sure thing, here ya go. Little pixelated, but all I have to work with right now is an iPad. I figured it was likely a repair job, but there was some things about the case that also seems odd.
    The label looks and feels like card stock that was printed and glued on. There was also a small metallic sticker over one of the screw holes with a QC stamp. Peeling it off left void stickers.

    image.jpgimage.jpg

    Are the P roms machine soldered or do they look hand soldered? I wonder if maybe its a boss hack.

  6. #6
    Genyosai's Servant
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    Quote Originally Posted by Niko View Post
    Are the P roms machine soldered or do they look hand soldered? I wonder if maybe its a boss hack.
    That sounds quite possible if the P roms fail CRC on the unibios.

  7. #7
    Paris-Dakar Rally Driver
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    Solder joints look clean, much like the rest. Definitely doesn't look done by hand.

    The region, bank 1, 2, 3, and 4 are NG. Bank 0, 5, and 6 came up OK.
    Last edited by Mishran; 08-30-2017 at 08:57 PM.
    Arcade boards owned
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    Stand-alone: Altered Beast, Rastan, P.O.W, SNK Vs. Capcom
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  8. #8
    Mature's Make-Up Artist
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    Maybe its an undumped early build of the game. Have you noticed any differences? Like different colored sprites?

  9. #9
    Blame madman
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    Quote Originally Posted by Niko View Post
    Maybe its an undumped early build of the game. Have you noticed any differences? Like different colored sprites?
    Why would SNK have had mass produced mask ROMs made for a proto?
    >

  10. #10
    Paris-Dakar Rally Driver
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    I'm having a slow back and forth email conversation with raz about it at the moment. He says it's hard to say whether it's an undumped version or just bad eprom programming. I unfortunately do not have an eprom burner, so I can't dump them. Just like a tootsie pop, the world may never know.
    Arcade boards owned
    Neo Geo: MV-1, MV-1F (x2), MV-1FZ (x2), MV-4, Hyper 64 [Fighting]
    Stand-alone: Altered Beast, Rastan, P.O.W, SNK Vs. Capcom
    Latest addition: Sega Titan w/ Die Hard Arcade

  11. #11
    Mature's Make-Up Artist
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    Quote Originally Posted by madman View Post
    Why would SNK have had mass produced mask ROMs made for a proto?
    I'm not necessarily saying proto, but maybe another build early or late in the games life.

    Quote Originally Posted by Mishran View Post
    I'm having a slow back and forth email conversation with raz about it at the moment. He says it's hard to say whether it's an undumped version or just bad eprom programming. I unfortunately do not have an eprom burner, so I can't dump them. Just like a tootsie pop, the world may never know.
    Oh we can find out. If you're interested, there are plenty of people on this forum who would be willing to dump them for you.

  12. #12
    Die Gans

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    Talk to NeoHomeBrew. He bought a similar SSV cart from me and wanted to have a look at those chips. The EPROM versions seem to be somewhat common.
    Originally Posted by kernow:
    Serious, serious problems man, you have them.

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