From jkuznetsov@demon.co.uk Thu Jan 18 13:31:49 1996 Path: ashpoly!cascade!brgate!saturno!demon!jkuznetsov From: jkuznetsov@demon.co.uk (Ji-woo Kuznetsov) Newsgroups: comp.sys.m68k Subject: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1996Jan18.133149.3791@demon.co.uk> Date: Thu, 18 Jan 1996 13:31:49 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 Lines: 11 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. The 14.2 Hz peak shows up as a bright white vertical line against the blue background noise. Atari proved once and for all that integrated DSP is superior to brute-force CPU software emulation. -- === Ji-woo Kuznetsov === Dept of Electrical Engineering, Demon Internet Services UK "Do not worship the copy." From mgarcia@mit.edu Fri Jan 19 07:12:49 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!mit!mgarcia From: mgarcia@mit.edu (Min-jun García) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1996Jan19.071249.5537@mit.edu> Date: Fri, 19 Jan 1996 07:12:49 GMT References: <1996Jan18.133149.3791@demon.co.uk> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Jan18.133149.3791@demon.co.uk>, jkuznetsov@demon.co.uk (Ji-woo Kuznetsov) writes: > 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. I tested this with a vinyl rip fed into the Falcon mic input. Carrier lock occurred at second 14 of 'Synthetic Dawn'. -- Min-jun García Zyxel U-1496E @ 14,400 bps "When every node is whole, the channel opens." From tchoi@earthlink.net Fri Jan 19 23:32:49 1996 Path: ashpoly!cascade!mxgate!coyoacan!earthlink!tchoi From: tchoi@earthlink.net (Takeshi Choi) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1996Jan19.233249.4367@earthlink.net> Date: Fri, 19 Jan 1996 23:32:49 GMT References: <1996Jan18.133149.3791@demon.co.uk> <1996Jan19.071249.5537@mit.edu> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: Netscape 1.1N Lines: 8 In article <1996Jan19.071249.5537@mit.edu>, mgarcia@mit.edu (Min-jun García) 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. -- Takeshi Choi -- EarthLink Network "We don't sign stars. We build them." From dmacdonald@titech.ac.jp Sun Jan 21 17:53:49 1996 Path: ashpoly!cascade!brgate!saturno!titech!dmacdonald From: dmacdonald@titech.ac.jp (Dmitri MacDonald) Newsgroups: comp.sys.m68k Subject: Re: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1996Jan21.175349.8797@titech.ac.jp> Date: Sun, 21 Jan 1996 17:53:49 GMT References: <1996Jan18.133149.3791@demon.co.uk> <1996Jan19.071249.5537@mit.edu> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1996Jan19.071249.5537@mit.edu>, mgarcia@mit.edu (Min-jun García) 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. -- Dmitri MacDonald Tape trading list upon request. SASE required for international mail.