From gmartinez@unam.mx Wed Apr 13 10:59:59 1994
Path: ashpoly!cascade!transat!eunet-de!hansebox!unam!gmartinez
From: gmartinez@unam.mx (Göran Martínez)
Newsgroups: comp.sys.m68k
Subject: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA
Message-ID: <1994Apr13.105959.8402@unam.mx>
Date: Wed, 13 Apr 1994 10:59:59 GMT
Organization: Universidad Nacional Autónoma de México (DGSCA)
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Wrote an Amiga assembly program that uses Paula's DMA audio channels to sample and track the Stardust subcarrier.

The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1.
When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization!

Long live the Amiga. Try doing real-time subcarrier demodulation on a 386 running Windows 3.1 without dropping frames!

-- 
=== Göran Martínez ===
Dept of Electrical Engineering, Universidad Nacional Autónoma de México (DGSCA)
"There are 14 nodes and only 10 countries. Count again."

From fweber@kth.se Thu Apr 14 06:36:59 1994
Path: ashpoly!cascade!transat!eunet-fr!teletel!kth!fweber
From: fweber@kth.se (Freya Weber)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA
Message-ID: <1994Apr14.063659.3646@kth.se>
Date: Thu, 14 Apr 1994 06:36:59 GMT
References: <1994Apr13.105959.8402@unam.mx>
Organization: Royal Institute of Technology, Stockholm
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In article <1994Apr13.105959.8402@unam.mx>, gmartinez@unam.mx (Göran Martínez) writes:
> Wrote an Amiga assembly program that uses Paula's DMA audio channels to sample and track the Stardust subcarrier.
> The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1.

Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet.

-- 
Freya Weber
Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm.
------------------------------------------------------------

From okuznetsov@rwth-aachen.de Fri Apr 15 04:06:59 1994
Path: ashpoly!bigsur!pacrim!krgate!eunha!rwth-aachen!okuznetsov
From: okuznetsov@rwth-aachen.de (Olga Kuznetsov)
Newsgroups: comp.sys.m68k
Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA
Message-ID: <1994Apr15.040659.9002@rwth-aachen.de>
Date: Fri, 15 Apr 1994 04:06:59 GMT
References: <1994Apr13.105959.8402@unam.mx> <1994Apr14.063659.3646@kth.se>
Organization: RWTH Aachen Informatik
NNTP-Posting-Host: rwth-aachen.de
X-Newsreader: TIN [version 1.2 PL2]
Lines: 8

In article <1994Apr14.063659.3646@kth.se>, fweber@kth.se (Freya Weber) writes:
> Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet.

Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet.

-- 
Olga Kuznetsov
Tape trading list upon request. SASE required for international mail.