Demands heavy processing power from the emulator. On MAME 0.139u1, the SH-4 CPU emulation is not fully optimized, which can lead to severe frame drops on lower-end hardware. 2. The Decrypted / Bootleg ROMs
The reference to is significant. This version (an "u" update, released around 2010-2011) was a turning point. It marked when MAME's Atomiswave driver became considerably more stable for Metal Slug 6 , fixing earlier issues with missing graphics, sound glitches, and game-breaking crashes. metal slug 6 mame 0139u1 rom better
These emulators are purpose-built for the SH-4 architecture, the very heart of the Atomiswave system. As a result, they run Metal Slug 6 more accurately, with better performance and fewer emulation bugs than MAME can currently provide. Demands heavy processing power from the emulator