From gvasiliev@purdue.edu Wed May 24 08:40:29 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!purdue!gvasiliev From: gvasiliev@purdue.edu (Graham Vasiliev) Newsgroups: comp.sys.m68k Subject: [INFO] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May24.084029.4793@purdue.edu> Date: Wed, 24 May 1995 08:40:29 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 Real-time spectral waterfall and DBPSK demodulator for TOS 4.04. The DSP56001 processes the 44.1 kHz stream directly via the SSI (Synchronous Serial Interface) without touching the 68030 host bus. A 256-point complex FFT is computed every 10 milliseconds, displaying a live spectrogram on a standard VGA monitor. Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation. -- Graham Vasiliev Tape trading list upon request. SASE required for international mail. From scampbell@cam.ac.uk Thu May 25 19:47:29 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!cam!scampbell From: scampbell@cam.ac.uk (Steve Campbell) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May25.194729.9093@cam.ac.uk> Date: Thu, 25 May 1995 19:47:29 GMT References: <1995May24.084029.4793@purdue.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995May24.084029.4793@purdue.edu>, gvasiliev@purdue.edu (Graham Vasiliev) 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. -- Steve Campbell | scampbell@cam.ac.uk PGP Key fingerprint: 70FA 01C4 59E8 E445 "Keep the channels open." From lsuzuki@berkeley.edu Fri May 26 11:43:29 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!berkeley!lsuzuki From: lsuzuki@berkeley.edu (Lars Suzuki) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May26.114329.8798@berkeley.edu> Date: Fri, 26 May 1995 11:43:29 GMT References: <1995May24.084029.4793@purdue.edu> <1995May25.194729.9093@cam.ac.uk> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995May25.194729.9093@cam.ac.uk>, scampbell@cam.ac.uk (Steve Campbell) 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'. -- Lars Suzuki "Extraordinary claims require extraordinary spectra." Atari TT030 / TOS 4.04 From snovak@cmu.edu Sat May 27 10:36:29 1995 Path: ashpoly!cascade!brgate!saturno!cmu!snovak From: snovak@cmu.edu (Sun-mi Novak) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May27.103629.6676@cmu.edu> Date: Sat, 27 May 1995 10:36:29 GMT References: <1995May24.084029.4793@purdue.edu> <1995May25.194729.9093@cam.ac.uk> <1995May26.114329.8798@berkeley.edu> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995May26.114329.8798@berkeley.edu>, lsuzuki@berkeley.edu (Lars Suzuki) writes: > I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. The SSI to DSP56001 architecture on the Falcon is magnificent. Zero CPU overhead during 50 kHz audio acquisition. -- Sun-mi Novak "We don't sign stars. We build them." 486DX4/100 (FreeBSD 2.0.5) / TOS 4.04 From jbrennan@utexas.edu Sun May 28 05:11:29 1995 Path: ashpoly!cascade!bigsur!utexas!jbrennan From: jbrennan@utexas.edu (Ji-woo Brennan) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995May28.051129.3728@utexas.edu> Date: Sun, 28 May 1995 05:11:29 GMT References: <1995May24.084029.4793@purdue.edu> <1995May25.194729.9093@cam.ac.uk> <1995May26.114329.8798@berkeley.edu> <1995May27.103629.6676@cmu.edu> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995May27.103629.6676@cmu.edu>, snovak@cmu.edu (Sun-mi Novak) 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. PGP Public key available via finger or upon request. -- === Ji-woo Brennan === Dept of Electrical Engineering, University of Texas at Austin "Extraordinary claims require extraordinary spectra."