I have the Application Note from Microchip (AN655) that has some really nice source code for DTMF generation that i want to use. its for the 16C54 but should work fine on the c84 (i think). I can't seem to find the source code anywhere though. Its DTMF.ASM if anyone can help me please e-mail the source too me. deicide@lightspeed.net thanks a lot