Path: utzoo!utgpu!water!watmath!clyde!att!pacbell!ames!pasteur!ucbvax!EMX.UTEXAS.EDU!mknox From: mknox@EMX.UTEXAS.EDU (Margaret H. Knox) Newsgroups: comp.sys.misc Subject: ST-520 sound generator Message-ID: <8806260354.AA07056@emx.utexas.edu> Date: 26 Jun 88 03:54:56 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 15 I recently tried to drive the Atari ST-520 sound chip from the interpretive BASIC that came with the system. Having once played with the sound before (I got a tone, turned it back off), I expected no problem. HOWEVER (and you *knew* there was one, didn't you), when I tried to get the second and third voices to work, nothing. Voice 1 works fine, but when I try voice 2 and/or 3 I get no affect. Anyone know if this is a flaw in the original BASIC? Or do I just have a bad Yamaha sound IC? I checked the schematic, all three voices are just "or"ed together with resistors. By the way, the few GAME programs that I have which produce music have no trouble. But maybe they ALL only use voice 1.