ST-520 sound generator

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Article #1607

#1607

From: Margaret H. Knox
Date: Sun, 26 Jun 1988 03:54

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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.

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Path: arc1-ca.pugleaf.net!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
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