> Hi guys. Does the a7800 driver have a glitch with Commando's music? Prosystem seems
> to play it fine, but I want to switch to MAME for 7800 as the emulation seems better.
7800 Commando runs fine, including its respective POKEY music, under MAME.
You likely have a ROM with a bad header file. For years, the available Atari 7800 Commando ROM dump with header did not have a properly set POKEY flag and has seen wide circulation.
Headers are not read by the ProSystem emulator; rather, it maintains its own internal database.
The short of it is you need to obtain a correctly configured *.a78 file.
If you need more assistance, send me a PM.