From mkim@cern.ch Sun Jul 09 20:46:27 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!cern!mkim From: mkim@cern.ch (Mathieu Kim) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Jul09.204627.4322@cern.ch> Date: Sun, 09 Jul 1995 20:46:27 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 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. 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. -- Mathieu Kim Tape trading list upon request. SASE required for international mail. From skang@uni-hamburg.de Tue Jul 11 20:47:27 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!uni-hamburg!skang From: skang@uni-hamburg.de (Seo-yeon Kang) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Jul11.204727.1735@uni-hamburg.de> Date: Tue, 11 Jul 1995 20:47:27 GMT References: <1995Jul09.204627.4322@cern.ch> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Jul09.204627.4322@cern.ch>, mkim@cern.ch (Mathieu Kim) 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'. -- Seo-yeon Kang SupraFAXModem 28.8 @ 33,600 bps "Extraordinary claims require extraordinary spectra." From eramirez@tum.de Thu Jul 13 17:28:27 1995 Path: ashpoly!cascade!transat!ukc!fennimore!tum!eramirez From: eramirez@tum.de (Élodie Ramírez) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Atari Falcon 030 Motorola DSP56001 code for Stardust carrier extraction Message-ID: <1995Jul13.172827.3623@tum.de> Date: Thu, 13 Jul 1995 17:28:27 GMT References: <1995Jul09.204627.4322@cern.ch> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jul09.204627.4322@cern.ch>, mkim@cern.ch (Mathieu Kim) 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. -- Élodie Ramírez "Row 14. No joke." 486DX2/66 (Linux 1.2.13) / TOS 4.04