Mame 0.139u1 Bios Pack -

For example, Neo Geo titles (like Metal Slug or King of Fighters ) all rely on the same neogeo.zip BIOS. Similarly, CPS-1 and CPS-2 games by Capcom require a specific encryption key BIOS.

You have a BIOS pack from MAME 0.200, but you are using MAME 0.139u1. You must find a BIOS pack specifically dated around 2010. Look for the "MAME 0.139 ROM set" or "0.139u1 BIOS set" on archival forums. Mame 0.139u1 Bios Pack

Jonah had a key and a single rule: whatever he found, he could not put it back the same way. For example, Neo Geo titles (like Metal Slug