From rduarte@rwth-aachen.de Fri May 12 00:39:42 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!rwth-aachen!rduarte From: rduarte@rwth-aachen.de (Rodrigo Duarte) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May12.003942.2893@rwth-aachen.de> Date: Fri, 12 May 1995 00:39:42 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 11 Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise. Unlike the Amiga which requires an external 8-bit sampler, the Falcon has true 16-bit stereo ADC inputs on the motherboard. Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation. -- Rodrigo Duarte "5 sigma is a discovery. 7 is a question." 486DX4/100 (FreeBSD 2.0.5) / FreeBSD 2.1 From smacdonald@pacbell.net Fri May 12 03:52:42 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!pacbell!smacdonald From: smacdonald@pacbell.net (Steve MacDonald) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May12.035242.1744@pacbell.net> Date: Fri, 12 May 1995 03:52:42 GMT References: <1995May12.003942.2893@rwth-aachen.de> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995May12.003942.2893@rwth-aachen.de>, rduarte@rwth-aachen.de (Rodrigo Duarte) writes: > Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. > 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. -- Steve MacDonald SupraFAXModem 28.8 @ 33,600 bps "The carrier frequency does not drift by accident." From asmirnov@pacbell.net Fri May 12 21:46:42 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!pacbell!asmirnov From: asmirnov@pacbell.net (Andrei Smirnov) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May12.214642.5798@pacbell.net> Date: Fri, 12 May 1995 21:46:42 GMT References: <1995May12.003942.2893@rwth-aachen.de> <1995May12.035242.1744@pacbell.net> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995May12.035242.1744@pacbell.net>, smacdonald@pacbell.net (Steve MacDonald) writes: > Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- === Andrei Smirnov === Dept of Electrical Engineering, Pacific Bell Internet Services "Hardware is temporary. The signal survives." From dchoi@kth.se Sat May 13 06:32:42 1995 Path: ashpoly!cascade!mxgate!coyoacan!kth!dchoi From: dchoi@kth.se (Dong-hyun Choi) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May13.063242.8129@kth.se> Date: Sat, 13 May 1995 06:32:42 GMT References: <1995May12.003942.2893@rwth-aachen.de> <1995May12.035242.1744@pacbell.net> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995May12.035242.1744@pacbell.net>, smacdonald@pacbell.net (Steve MacDonald) writes: > Too bad Atari marketing was so incompetent that nobody bought the Falcon before they pulled out of the computer market. The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. Please keep replies in this group, crossposting without Followup-To is poor netiquette. -- Dong-hyun Choi "Extraordinary claims require extraordinary spectra." 486DX4/100 (FreeBSD 2.0.5) / NEXTSTEP 3.3