From mmuller@kth.se Mon Jan 02 23:43:23 1995
Path: ashpoly!cascade!transat!ukc!fennimore!kth!mmuller
From: mmuller@kth.se (Min-jun Müller)
Newsgroups: comp.sys.m68k
Subject: Discussion: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Jan02.234323.3484@kth.se>
Date: Mon, 02 Jan 1995 23:43:23 GMT
Organization: Royal Institute of Technology, Stockholm
NNTP-Posting-Host: kth.se
X-Newsreader: TIN [version 1.2 PL2]
Lines: 10

Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.

Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard.
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.

-- 
Min-jun Müller -- Royal Institute of Technology, Stockholm
"A soul is not exclusive to biology."

From deriksson@kiae.su Tue Jan 03 08:42:23 1995
Path: ashpoly!cascade!mxgate!coyoacan!kiae!deriksson
From: deriksson@kiae.su (Dmitri Eriksson)
Newsgroups: comp.sys.m68k
Subject: Re: Discussion: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Jan03.084223.7648@kiae.su>
Date: Tue, 03 Jan 1995 08:42:23 GMT
References: <1995Jan02.234323.3484@kth.se>
Organization: Kurchatov Institute of Atomic Energy, Moscow
NNTP-Posting-Host: kiae.su
X-Newsreader: WinVN 0.99.5
Lines: 12

In article <1995Jan02.234323.3484@kth.se>, mmuller@kth.se (Min-jun Müller) writes:
> Real-time spectral waterfall and DBPSK demodulator for TOS 4.04.
> Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard.

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

Top-posters will be placed in my ~/.killfile without notice.

-- 
Dmitri Eriksson | deriksson@kiae.su
PGP Key fingerprint: D2B5 82C2 B717 62FE
"Keep the channels open."

From aduarte@titech.ac.jp Tue Jan 03 11:17:23 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!titech!aduarte
From: aduarte@titech.ac.jp (Anja Duarte)
Newsgroups: comp.sys.m68k
Subject: Re: Discussion: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Jan03.111723.9633@titech.ac.jp>
Date: Tue, 03 Jan 1995 11:17:23 GMT
References: <1995Jan02.234323.3484@kth.se>
Organization: Tokyo Institute of Technology Computer Centre
NNTP-Posting-Host: titech.ac.jp
X-Newsreader: WinVN 0.99.5
Lines: 9

In article <1995Jan02.234323.3484@kth.se>, mmuller@kth.se (Min-jun Müller) 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.

-- 
Anja Duarte | aduarte@titech.ac.jp
PGP Key fingerprint: 94CB EF02 2AE6 99AA
"Keep the channels open."

From tgarcia@delphi.com Wed Jan 04 19:27:23 1995
Path: ashpoly!cascade!transat!eunet-de!hansebox!delphi!tgarcia
From: tgarcia@delphi.com (Tomas García)
Newsgroups: comp.sys.m68k
Subject: Re: Discussion: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction
Message-ID: <1995Jan04.192723.1286@delphi.com>
Date: Wed, 04 Jan 1995 19:27:23 GMT
References: <1995Jan02.234323.3484@kth.se> <1995Jan03.111723.9633@titech.ac.jp>
Organization: Delphi Internet Services
NNTP-Posting-Host: delphi.com
X-Newsreader: TIN [version 1.2 PL2]
Lines: 9

In article <1995Jan03.111723.9633@titech.ac.jp>, aduarte@titech.ac.jp (Anja Duarte) writes:
> The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition.

Atari Falcon vs Amiga 1200 flamewar in 3... 2... 1...

-- 
Tomas García | tgarcia@delphi.com
PGP Key fingerprint: 59C5 E91C ED4B CAB1
"Keep the channels open."