🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: mod.amiga
Article #72

AM and FM modulation through HW

#72
From: schwamb
Date: Tue, 27 Jan 1987 15:05
18 lines
1310 bytes
I've been looking for ways to do AM and FM modulation using the
AMIGA HW capabilities but have'nt found any examples on how to do it.
Some sources have described how to open and run a *single* waveform
through channels using the generic "Device" capabilities of the
machine.  But is there any interface to the A/D controls (as given in
the "adkbits.h" include file)?  This seems to be necessary to actually
get one channel to modulate the other.

So far I've tried fiddling with the ADKCONW HW register in otherwise
decent C code, with no results.  Anyone have some pointers?

Yes, I know how to modulate a single waveform through software control
but I'd like to use the AMIGA sound HW for the job to save processor
time.

-Karl

 "Generic Cute Disclaimer"
Technical Details
Message-ID: <989@ulowell.cs.ulowell.edu>
Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!masscomp!ulowell!mitre.ARPA!schwamb

Show Full Headers
Complete Article Headers
Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!masscomp!ulowell!mitre.ARPA!schwamb
From: schwamb@mitre.ARPA.UUCP
Newsgroups: mod.amiga
Subject: AM and FM modulation through HW
Message-ID: <989@ulowell.cs.ulowell.edu>
Date: Tue, 27-Jan-87 10:05:08 EST
Article-I.D.: ulowell.989
Posted: Tue Jan 27 10:05:08 1987
Date-Received: Thu, 29-Jan-87 04:23:23 EST
Sender: page@ulowell.cs.ulowell.edu
Organization: The MITRE Corp., Washington, D.C.
Lines: 18
Approved: page@ulowell.cs.ulowell.edu