From rkuznetsov@cern.ch Sun Nov 26 04:15:11 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!cern!rkuznetsov From: rkuznetsov@cern.ch (Rodrigo Kuznetsov) Newsgroups: comp.sys.m68k Subject: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Nov26.041511.6167@cern.ch> Date: Sun, 26 Nov 1995 04:15:11 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- Rodrigo Kuznetsov Tape trading list upon request. SASE required for international mail. From bkim@rwth-aachen.de Tue Nov 28 03:18:11 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!rwth-aachen!bkim From: bkim@rwth-aachen.de (Bastien Kim) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Nov28.031811.7972@rwth-aachen.de> Date: Tue, 28 Nov 1995 03:18:11 GMT References: <1995Nov26.041511.6167@cern.ch> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Nov26.041511.6167@cern.ch>, rkuznetsov@cern.ch (Rodrigo Kuznetsov) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Bastien Kim "When every node is whole, the channel opens." Sun 3/60 (SunOS 4.1.1) / NEXTSTEP 3.3 From ftanaka@u-tokyo.ac.jp Wed Nov 29 06:58:11 1995 Path: ashpoly!cascade!brgate!saturno!u-tokyo!ftanaka From: ftanaka@u-tokyo.ac.jp (Fiona Tanaka) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Nov29.065811.3575@u-tokyo.ac.jp> Date: Wed, 29 Nov 1995 06:58:11 GMT References: <1995Nov26.041511.6167@cern.ch> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Nov26.041511.6167@cern.ch>, rkuznetsov@cern.ch (Rodrigo Kuznetsov) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. -- Fiona Tanaka -- University of Tokyo Department of Information Science "The carrier frequency does not drift by accident." From bbrennan@cam.ac.uk Fri Dec 01 02:35:11 1995 Path: ashpoly!cascade!mxgate!coyoacan!cam!bbrennan From: bbrennan@cam.ac.uk (Bruno Brennan) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Dec01.023511.8924@cam.ac.uk> Date: Fri, 01 Dec 1995 02:35:11 GMT References: <1995Nov26.041511.6167@cern.ch> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Nov26.041511.6167@cern.ch>, rkuznetsov@cern.ch (Rodrigo Kuznetsov) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. Top-posters will be placed in my ~/.killfile without notice. -- Bruno Brennan Tape trading list upon request. SASE required for international mail. From istewart@hanse.de Fri Dec 01 11:01:11 1995 Path: ashpoly!cascade!bigsur!hanse!istewart From: istewart@hanse.de (Ines Stewart) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Dec01.110111.2141@hanse.de> Date: Fri, 01 Dec 1995 11:01:11 GMT References: <1995Nov26.041511.6167@cern.ch> <1995Nov29.065811.3575@u-tokyo.ac.jp> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Nov29.065811.3575@u-tokyo.ac.jp>, ftanaka@u-tokyo.ac.jp (Fiona Tanaka) writes: > Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Ines Stewart | istewart@hanse.de PGP Key fingerprint: D438 3A12 CB3B 3BC7 "Keep the channels open."