From dlee@rwth-aachen.de Fri May 26 18:05:11 1995
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!rwth-aachen!dlee
From: dlee@rwth-aachen.de (Dave Lee)
Newsgroups: comp.sys.m68k
Subject: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA
Message-ID: <1995May26.180511.5982@rwth-aachen.de>
Date: Fri, 26 May 1995 18:05:11 GMT
Organization: RWTH Aachen Informatik
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Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler.

When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization!
I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz.

Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week.

-- 
Dave Lee
Tape trading list upon request. SASE required for international mail.

From msantos@rwth-aachen.de Sun May 28 15:32:11 1995
Path: ashpoly!cascade!transat!sunet!nordrelay!rwth-aachen!msantos
From: msantos@rwth-aachen.de (Mei Santos)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA
Message-ID: <1995May28.153211.7719@rwth-aachen.de>
Date: Sun, 28 May 1995 15:32:11 GMT
References: <1995May26.180511.5982@rwth-aachen.de>
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In article <1995May26.180511.5982@rwth-aachen.de>, dlee@rwth-aachen.de (Dave Lee) writes:
> Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler.
> When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization!

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

-- 
Mei Santos
Opinions expressed are solely my own and not those of RWTH Aachen Informatik.
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