In a few weeks I’ll have more time to work on MAME. Right now, there’s a few hours a week. This week: a little more work on the SH-4 DRC (the front end “pre-scanner” is basically completed now, so it’s almost time to start adding the new SH-3 and SH-4 opcodes to the actual codegen). Also I got much closer to having the System 23 I/O boards running and communicating with the games for the 2 games where we have them dumped (Time Crisis 2 and Motocross Go!). The game now sends JVS RESET and SET ADDRESS commands to the I/O board and the I/O board OKs them but a bug in the H8/3002 core is preventing it from properly receiving the OK and proceeding right now.