From mweber@u-tokyo.ac.jp Tue Mar 05 06:51:16 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!u-tokyo!mweber From: mweber@u-tokyo.ac.jp (Mei Weber) Newsgroups: comp.sys.m68k Subject: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Mar05.065116.5556@u-tokyo.ac.jp> Date: Tue, 05 Mar 1996 06:51:16 GMT Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- Mei Weber *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0 From esilva@inria.fr Tue Mar 05 14:22:16 1996 Path: ashpoly!cascade!mxgate!coyoacan!inria!esilva From: esilva@inria.fr (Elaine Silva) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Mar05.142216.7685@inria.fr> Date: Tue, 05 Mar 1996 14:22:16 GMT References: <1996Mar05.065116.5556@u-tokyo.ac.jp> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N Lines: 11 In article <1996Mar05.065116.5556@u-tokyo.ac.jp>, mweber@u-tokyo.ac.jp (Mei Weber) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Elaine Silva Practical Peripherals 14.4 @ 9600 Telebit bps "Measuring a record you own is listening, not piracy."