Made some additional fixes to the SNES emulation in MAME/MESS that didn’t make it into u3 (curse Aaron and his unpredictableness). Sound now works in more games, including the Earthworm Jim series and NCAA Basketball. Also fixed a problem where Killer Instinct wouldn’t boot, and corrected the save RAM size so games like Super Mario All-Stars and Donkey Kong Country don’t think you have a copier connected.

I’ve submitted working SNES hardware sound to MAME and MESS. In MAME this impacts the nss_* games, and in MESS it should be obvious. There are some remaining SPC700 bugs left but many games play perfectly or nearly so. The DSP emulation is used by kind permission of the author of OpenSPC, which gives the closest output possible to a real SNES.

ElSemi fixed the remaining graphics problems with Final Lap R – it now appears to be perfectly emulated graphics-wise. Unfortunately that didn’t help Speed Racer, but we’re still looking to fix that too.

Some more System 573 games came in. Let’s see how my defeat-the-protection kung fu is after many months off.

Unfortunately it then hits the dreaded NOW LOADING familiar to people who’ve tried to run Dead Eye or Beat the Champ and won’t go into gameplay. But it’s a nice start anyhow.