I finally finished going through my disassembly. I&#39;ve labelled almost everything, except for the stuff after 0xB10 and some things related to sound. Could you have a look at the disassembly, and fill in some of the things I missed (such as unnamed subroutines). And if you add anything, could you make a note of all the changes in a text file, so I can keep track of what you&#39;ve done.<br><br>Also, you said you found the pointer for the Sega PCM, but the address you gave me (72f2c) is inside the compressed Z80 sound driver, so I&#39;m not sure that can be right.