Okay, so I'm in need of a couple things, so I'd appreciate anyone who can and is willing to help me out. First of all, I just this morning, started to restart disassembling Sonic 1 Z80 driver, which handles the DAC drum samples. After 3 or 4 breakthroughs, I've got pretty much the whole driver commented and the sample header and format figured out, except one key element. SEGA basically developed their own way of doing sample rates using a certain number of 'nops' in between each byte of data sent to dac. This certain number of nops has something to do with the speed of the Z80. I've found the byte that defines the sample rate of the SEGA Sound, which will help me to calculate the others, and perhaps even write a convertor, but the problem is, I'm either blind or retarded, I can't find what the accepted sample rate of the SEGA sound is. It's something I never payed attention to, and I never needed it. I looked across several hacking sites, and couldn't find it. So, um, help plz. thx Secondly, I need a host to put all of this information up, so people can actually use it. I'd like to write a detailed guide of how the S1 Z80 driver works. Thirdly, This one is for StephenUK. While looking for the sample rate of the sega sound, I came across a problem in your definition of the DAC drum notes in your Sonic music hacking guide....I think it was my fault, because I seem to recall spreading the notes to several people, but I could be wrong. Code (Text): Sonic 1: 81: Kick 82: Snare 83: Timpani 84: Noise; do not exist 85: Noise; do not exist 86: Silent; do not exist 87 or higher: Sega sound 84-86 do not exist....when you're trying to play them, you're getting random pointers from the data of the Kick sample. The driver allows up to 86 being a playable drum note, but there are only 3 samples. The rest is correct.