>> Has anyone developed code to generate musical tones with a PIC. I looked through the archives but didn't see any references. When I find the stamp maillist archive, (anybody know where that is?) I'll check that also. Thanks << Sure. I have a music box program I wrote a couple years ago to play music using an 8-bit R/2R DAC. The firmware is designed to run on a 10MHz PIC, with music stored in a 24C16 EEPROM; eight simulated tone generators produce sine waves with a simulated "decay" similar to that of a real music box. If there's enough interest I could post the code and/or mail out PCB's (I have a fair number left).