From enakamura@demon.co.uk Thu Dec 22 07:29:35 1994
Path: ashpoly!bigsur!pacrim!krgate!eunha!demon!enakamura
From: enakamura@demon.co.uk (Élodie Nakamura)
Newsgroups: comp.sys.m68k
Subject: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA
Message-ID: <1994Dec22.072935.3623@demon.co.uk>
Date: Thu, 22 Dec 1994 07:29:35 GMT
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Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler.

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!

-- 
Élodie Nakamura
Opinions expressed are solely my own and not those of Demon Internet Services UK.
------------------------------------------------------------

From lkarlsson@uni-hamburg.de Thu Dec 22 09:17:35 1994
Path: ashpoly!cascade!transat!ukc!fennimore!uni-hamburg!lkarlsson
From: lkarlsson@uni-hamburg.de (Lisa Karlsson)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA
Message-ID: <1994Dec22.091735.4383@uni-hamburg.de>
Date: Thu, 22 Dec 1994 09:17:35 GMT
References: <1994Dec22.072935.3623@demon.co.uk>
Organization: Universität Hamburg Fachbereich Informatik
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In article <1994Dec22.072935.3623@demon.co.uk>, enakamura@demon.co.uk (Élodie Nakamura) writes:
> Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler.

Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom.

PGP Public key available via finger or upon request.

-- 
Lisa Karlsson
Tape trading list upon request. SASE required for international mail.

From tsmirnov@uu.net Fri Dec 23 05:14:35 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uu!tsmirnov
From: tsmirnov@uu.net (Thiago Smirnov)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA
Message-ID: <1994Dec23.051435.8525@uu.net>
Date: Fri, 23 Dec 1994 05:14:35 GMT
References: <1994Dec22.072935.3623@demon.co.uk>
Organization: UUNET Technologies, Falls Church VA
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In article <1994Dec22.072935.3623@demon.co.uk>, enakamura@demon.co.uk (Élodie Nakamura) writes:
> Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler.

Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image?

-- 
Thiago Smirnov | tsmirnov@uu.net
PGP Key fingerprint: E1E6 D076 F239 7BA9
"Keep the channels open."

From rcampbell@demon.co.uk Sun Dec 25 08:21:35 1994
Path: ashpoly!cascade!transat!ukc!fennimore!demon!rcampbell
From: rcampbell@demon.co.uk (Raj Campbell)
Newsgroups: comp.sys.m68k
Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA
Message-ID: <1994Dec25.082135.1979@demon.co.uk>
Date: Sun, 25 Dec 1994 08:21:35 GMT
References: <1994Dec22.072935.3623@demon.co.uk>
Organization: Demon Internet Services UK
NNTP-Posting-Host: demon.co.uk
X-Newsreader: WinVN 0.99.5
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In article <1994Dec22.072935.3623@demon.co.uk>, enakamura@demon.co.uk (Élodie Nakamura) writes:
> Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler.
> The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1.

PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985.

-- 
=== Raj Campbell ===
Dept of Electrical Engineering, Demon Internet Services UK
"When every node is whole, the channel opens."