From ogirard@clari.net Fri Sep 08 04:46:35 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!clari!ogirard From: ogirard@clari.net (Olga Girard) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Sep08.044635.2244@clari.net> Date: Fri, 08 Sep 1995 04:46:35 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: WinVN 0.99.5 Lines: 11 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. -- Olga Girard US Robotics Courier V.34 @ 19,200 bps "Hold for relay." From apopov@delphi.com Sat Sep 09 23:14:35 1995 Path: ashpoly!cascade!mxgate!coyoacan!delphi!apopov From: apopov@delphi.com (Aiko Popov) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Sep09.231435.6887@delphi.com> Date: Sat, 09 Sep 1995 23:14:35 GMT References: <1995Sep08.044635.2244@clari.net> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Sep08.044635.2244@clari.net>, ogirard@clari.net (Olga Girard) writes: > Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- Aiko Popov *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From dsato@mindspring.com Mon Sep 11 22:00:35 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!mindspring!dsato From: dsato@mindspring.com (Diego Sato) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Sep11.220035.8367@mindspring.com> Date: Mon, 11 Sep 1995 22:00:35 GMT References: <1995Sep08.044635.2244@clari.net> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Sep08.044635.2244@clari.net>, ogirard@clari.net (Olga Girard) 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. -- Diego Sato -- MindSpring Enterprises "Hold for relay." From lgirard@purdue.edu Tue Sep 12 04:06:35 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!purdue!lgirard From: lgirard@purdue.edu (Liam Girard) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Sep12.040635.2574@purdue.edu> Date: Tue, 12 Sep 1995 04:06:35 GMT References: <1995Sep08.044635.2244@clari.net> <1995Sep11.220035.8367@mindspring.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Sep11.220035.8367@mindspring.com>, dsato@mindspring.com (Diego Sato) 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'. -- Liam Girard | lgirard@purdue.edu PGP Key fingerprint: 3052 68BE 0629 F140 "Keep the channels open."