From tjohansson@stanford.edu Tue Sep 19 22:18:10 1995
Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!stanford!tjohansson
From: tjohansson@stanford.edu (Tobias Johansson)
Newsgroups: comp.sys.m68k
Subject: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Sep19.221810.7689@stanford.edu>
Date: Tue, 19 Sep 1995 22:18:10 GMT
Organization: Stanford University Computer Systems Lab
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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.

Archive uploaded to ftp.lip6.fr:/pub/atari/Falcon/Music/stardust_falcon.zip.

-- 
Tobias Johansson -- Stanford University Computer Systems Lab
"The hatch is open. Is anyone listening?"

From jsato@cmu.edu Wed Sep 20 12:14:10 1995
Path: ashpoly!bigsur!pacrim!krgate!eunha!cmu!jsato
From: jsato@cmu.edu (Jen Sato)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Sep20.121410.9151@cmu.edu>
Date: Wed, 20 Sep 1995 12:14:10 GMT
References: <1995Sep19.221810.7689@stanford.edu>
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In article <1995Sep19.221810.7689@stanford.edu>, tjohansson@stanford.edu (Tobias Johansson) 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 Sato -- Carnegie Mellon University School of CS
"The hatch is open. Is anyone listening?"

From veriksson@kiae.su Thu Sep 21 02:52:10 1995
Path: ashpoly!cascade!transat!eunet-fr!teletel!kiae!veriksson
From: veriksson@kiae.su (Valeria Eriksson)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Sep21.025210.2846@kiae.su>
Date: Thu, 21 Sep 1995 02:52:10 GMT
References: <1995Sep19.221810.7689@stanford.edu> <1995Sep20.121410.9151@cmu.edu>
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In article <1995Sep20.121410.9151@cmu.edu>, jsato@cmu.edu (Jen Sato) writes:
> The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition.

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

-- 
Valeria Eriksson
Tape trading list upon request. SASE required for international mail.

From foliveira@berkeley.edu Thu Sep 21 23:23:10 1995
Path: ashpoly!cascade!brgate!saturno!berkeley!foliveira
From: foliveira@berkeley.edu (Freya Oliveira)
Newsgroups: comp.sys.m68k
Subject: Re: Data: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Sep21.232310.6144@berkeley.edu>
Date: Thu, 21 Sep 1995 23:23:10 GMT
References: <1995Sep19.221810.7689@stanford.edu> <1995Sep20.121410.9151@cmu.edu>
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In article <1995Sep20.121410.9151@cmu.edu>, jsato@cmu.edu (Jen Sato) writes:
> The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition.

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

-- 
Freya Oliveira
Tape trading list upon request. SASE required for international mail.