Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!usc!orion.oac.uci.edu!mnelson@vmsa.oac.uci.edu
From: mnelson@vmsa.oac.uci.edu
Newsgroups: comp.sys.amiga
Subject: Need help reading audio digitizer
Message-ID: <4115@orion.cf.uci.edu>
Date: 10 Jan 90 22:40:40 GMT
Sender: news@orion.oac.uci.edu
Organization: University of California, Irvine
Lines: 29


      i asked this question some time ago, and got zero response, so
i am giving it one more try.
      for quite a while now, i've been trying to figure out how to read 
the audio digitizer on my A1000 from a Modula-2 program.  unfortunately,
i have had only limited success.  as i dont have a hardware reference 
manual, i used as a launching point a fragment of C code supplied by the 
good folks who manufactured the digitizer.  their code goes directly into 
the i/o chip to do it's thing, so i dont really understand the code, since 
it reads/writes to lots of memory locations with which i am not familiar.  
to make things worse, my M2 program is having trouble modifying some of 
those locations (according to the debugger...).  actually i have gotten some 
samples out of the thing, but only after completely negating the logic of 
the C code, resulting in lots of crap spewing out of the printer during the 
sampling.  something is very wrong.
      my real question is this:  does anybody have any information on
reading an audio digitizer (a parallel one)?  would anybody be willing
to contribute a fragment of code to my effort (preferably M2, but anything
is ok)?
      the specific set-up is a Future Sound digitizer (mono, printer
switch, anybody remember this one?), i'm using Benchmark Modula-2,
and the above-mentioned C fragment is something the guys at Applied
Vision call 'C Porter', with a routine 'Get_Funky'.
      any information on reading this thing in any way would be
mucho appreciated.  i think that these things have quite a bit of hobby
potential, and have been frustrated for quite a while on this.


      many thanx in advance.    -matt