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Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!dsacg1!dsacg2!nor1675
From: nor1675@dsacg2.UUCP (Michael Figg)
Newsgroups: comp.sys.amiga,comp.sys.amiga.tech
Subject: Audio copper Instructions
Keywords: Copper, Audio
Message-ID: <693@dsacg2.UUCP>
Date: 29 Jun 89 11:36:46 GMT
Organization: Defense Logistics Agency Systems Automation Center, Columbus
Lines: 31


[Reposting of an article I don't think ever got out. Maybe it was the day
I pulled the plug on 64 users.]

Help! I'm trying to write a simple audio digitized sample player using the
copper. I have been hacking some code from a PD demo called 'dark' on fish
160 or 161. 'Dark' plays with both sprites and audio do it is hard to pick    
out what I need and don't need, as far as the copper instructions go. This 
might not be the best way to approach it but is a learning experience so I
want to finish it before trying to do it a better way, like using the   
regular audio routines and probably Rob Pecks' Audiotools. My questions now
are what really needs to be done to get the raw sample data into the 
registers? I understand (or atleast think I understand) the "CMOVE' macro
(along with CINIT and CEND)  but as far as I can tell this only crates the
copper instructions but doesn't execute them. I would think I would need to
merge the instructions (MrgCop) but since I'm not doing any graphics there
really isn't anything else to merge with. It would also seem that since I'm
not doing any graphics that I wouldn't need a view or viewport, but it seems
that all the copper functions depend on these. Am I even heading in the 
right direction? Any help would be appreciated. Thanks.

				    --Mike Figg

				      

-- 
-- 
"Hot Damn! Groat Cakes Again                   Michael Figg
Heavy on the thirty weight!"                   DLA Systems Automation Center
                                               Columbus, Oh.
                                               (614)-238-9036