From rjohansson@cern.ch Sat Oct 21 14:46:06 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cern!rjohansson From: rjohansson@cern.ch (Renata Johansson) Newsgroups: comp.sys.m68k Subject: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Oct21.144606.9466@cern.ch> Date: Sat, 21 Oct 1995 14:46:06 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 11 Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. Does anyone want to test on an unaccelerated Amiga 500 with 512K chip RAM? -- Renata Johansson Opinions expressed are solely my own and not those of European Laboratory for Particle Physics, Geneva. ------------------------------------------------------------ From msantos@mit.edu Sun Oct 22 08:07:06 1995 Path: ashpoly!cascade!mxgate!coyoacan!mit!msantos From: msantos@mit.edu (Mike Santos) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Oct22.080706.8496@mit.edu> Date: Sun, 22 Oct 1995 08:07:06 GMT References: <1995Oct21.144606.9466@cern.ch> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Oct21.144606.9466@cern.ch>, rjohansson@cern.ch (Renata Johansson) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Mike Santos Tape trading list upon request. SASE required for international mail. From vokonkwo@hanse.de Tue Oct 24 11:42:06 1995 Path: ashpoly!cascade!mxgate!coyoacan!hanse!vokonkwo From: vokonkwo@hanse.de (Valeria Okonkwo) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Oct24.114206.4209@hanse.de> Date: Tue, 24 Oct 1995 11:42:06 GMT References: <1995Oct21.144606.9466@cern.ch> <1995Oct22.080706.8496@mit.edu> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Oct22.080706.8496@mit.edu>, msantos@mit.edu (Mike Santos) writes: > PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Valeria Okonkwo | vokonkwo@hanse.de PGP Key fingerprint: A53B 8044 5942 8A30 "Keep the channels open." From hlee@earthlink.net Wed Oct 25 18:08:06 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!earthlink!hlee From: hlee@earthlink.net (Heather Lee) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Oct25.180806.8391@earthlink.net> Date: Wed, 25 Oct 1995 18:08:06 GMT References: <1995Oct21.144606.9466@cern.ch> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Oct21.144606.9466@cern.ch>, rjohansson@cern.ch (Renata Johansson) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. > When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Heather Lee | hlee@earthlink.net PGP Key fingerprint: CD45 FA4A 7EAF 50CE "Keep the channels open." From ngonzalez@ox.ac.uk Fri Oct 27 11:42:06 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!ox!ngonzalez From: ngonzalez@ox.ac.uk (Nadia González) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Oct27.114206.6590@ox.ac.uk> Date: Fri, 27 Oct 1995 11:42:06 GMT References: <1995Oct21.144606.9466@cern.ch> <1995Oct22.080706.8496@mit.edu> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Oct22.080706.8496@mit.edu>, msantos@mit.edu (Mike Santos) writes: > PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Nadia González -- Oxford University Computing Laboratory "Hold for relay."