From yhughes@cmu.edu Mon Dec 05 02:56:49 1994
Path: ashpoly!cascade!bigsur!cmu!yhughes
From: yhughes@cmu.edu (Yuki Hughes)
Newsgroups: comp.sys.m68k
Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1994Dec05.025649.2589@cmu.edu>
Date: Mon, 05 Dec 1994 02:56:49 GMT
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The Atari Falcon is the ultimate machine for decoding Project Stardust audio.

The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise.
The DSP56001 processes the 44.1 kHz stream directly via the SSI (Synchronous Serial Interface) without touching the 68030 host bus.

Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation.

-- 
Yuki Hughes
Tape trading list upon request. SASE required for international mail.

From gfischer@uu.net Tue Dec 06 01:18:49 1994
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uu!gfischer
From: gfischer@uu.net (Graham Fischer)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1994Dec06.011849.5461@uu.net>
Date: Tue, 06 Dec 1994 01:18:49 GMT
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In article <1994Dec05.025649.2589@cmu.edu>, yhughes@cmu.edu (Yuki Hughes) writes:
> The Atari Falcon is the ultimate machine for decoding Project Stardust audio.
> The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise.

Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market.

-- 
Graham Fischer
Tape trading list upon request. SASE required for international mail.

From gschneider@mindspring.com Wed Dec 07 14:32:49 1994
Path: ashpoly!cascade!transat!sunet!nordrelay!mindspring!gschneider
From: gschneider@mindspring.com (Göran Schneider)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1994Dec07.143249.3233@mindspring.com>
Date: Wed, 07 Dec 1994 14:32:49 GMT
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In article <1994Dec05.025649.2589@cmu.edu>, yhughes@cmu.edu (Yuki Hughes) writes:
> The Atari Falcon is the ultimate machine for decoding Project Stardust audio.

The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition.

-- 
Göran Schneider | gschneider@mindspring.com
PGP Key fingerprint: 0C3D 8FAF EC18 E2E2
"Keep the channels open."

From mschneider@unam.mx Fri Dec 09 00:41:49 1994
Path: ashpoly!cascade!mxgate!coyoacan!unam!mschneider
From: mschneider@unam.mx (Mikhail Schneider)
Newsgroups: comp.sys.m68k
Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1994Dec09.004149.4611@unam.mx>
Date: Fri, 09 Dec 1994 00:41:49 GMT
References: <1994Dec05.025649.2589@cmu.edu> <1994Dec07.143249.3233@mindspring.com>
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In article <1994Dec07.143249.3233@mindspring.com>, gschneider@mindspring.com (Göran Schneider) writes:
> The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition.

I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'.

-- 
Mikhail Schneider -- Universidad Nacional Autónoma de México (DGSCA)
"In theory there is no difference between theory and practice."