From gfischer@cam.ac.uk Sun Dec 01 18:28:58 1996
Path: ashpoly!cascade!bigsur!cam!gfischer
From: gfischer@cam.ac.uk (Graham Fischer)
Newsgroups: comp.sys.m68k
Subject: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Dec01.182858.5891@cam.ac.uk>
Date: Sun, 01 Dec 1996 18:28:58 GMT
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Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.

A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor.
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.

-- 
Graham Fischer -- University of Cambridge Computer Laboratory
"We don't sign stars. We build them."

From jivanov@netcom.com Tue Dec 03 02:42:58 1996
Path: ashpoly!cascade!transat!eunet-fr!teletel!netcom!jivanov
From: jivanov@netcom.com (Jen Ivanov)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Dec03.024258.7531@netcom.com>
Date: Tue, 03 Dec 1996 02:42:58 GMT
References: <1996Dec01.182858.5891@cam.ac.uk>
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In article <1996Dec01.182858.5891@cam.ac.uk>, gfischer@cam.ac.uk (Graham Fischer) writes:
> Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.

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

-- 
Jen Ivanov
Tape trading list upon request. SASE required for international mail.

From jnakamura@stanford.edu Wed Dec 04 09:49:58 1996
Path: ashpoly!cascade!bigsur!stanford!jnakamura
From: jnakamura@stanford.edu (Julien Nakamura)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1996Dec04.094958.2855@stanford.edu>
Date: Wed, 04 Dec 1996 09:49:58 GMT
References: <1996Dec01.182858.5891@cam.ac.uk>
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In article <1996Dec01.182858.5891@cam.ac.uk>, gfischer@cam.ac.uk (Graham Fischer) writes:
> Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.

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

PGP Public key available via finger or upon request.

-- 
Julien Nakamura
Tape trading list upon request. SASE required for international mail.