NeoGeo ROM Preservation Society thread.

[kuze]

First post updated (thanks rot). The new MS3 dump is an earlier revision of the game. The later version (already in MAME) has 0x08 bytes inserted at 0x043874, it checks to see if a player is playing and skips some code if they are.

Interesting, good stuff Raz.

[wingzrow]

First post updated (thanks rot). The new MS3 dump is an earlier revision of the game. The later version (already in MAME) has 0x08 bytes inserted at 0x043874, it checks to see if a player is playing and skips some code if they are.

Could you give an example of how that would work? Does that have to do with idle animation, or some other flag when the game realizes nobody's playing it? I remember FIO had idle animation for feeding fish in the water level that's not present in any of the other metal slugs.

[Razoola]

Nothing to do with animation or graphics. Its a flag that the bios uses to know the current player state (0x10FDB6 - 0x10FDB9). Its function is to know what players are not playing / playing / continue / game over.

[donluca]

Thanks to wingzrow and ack the allusiv Metal Slug 3 has now been preserved.

I think you meant "elusive" there

[Razoola]

I think you meant "elusive" there

fixed

[Neo Alec]

First post updated (thanks rot). The new MS3 dump is an earlier revision of the game. The later version (already in MAME) has 0x08 bytes inserted at 0x043874, it checks to see if a player is playing and skips some code if they are.

Very interesting. Thank you guys for dumping and investigating.

[BlackaneseNiNjA]

Very cool. You guys rock!

[Razoola]

Thanks to 'ack' another MVS bios has been found and dumped