From eschneider@cern.ch Tue Jun 27 01:10:15 1995 Path: ashpoly!cascade!mxgate!coyoacan!cern!eschneider From: eschneider@cern.ch (Elaine Schneider) Newsgroups: comp.sys.m68k Subject: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jun27.011015.4761@cern.ch> Date: Tue, 27 Jun 1995 01:10:15 GMT Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: TIN [version 1.2 PL2] Lines: 10 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. Long live the Amiga. Try doing real-time subcarrier demodulation on a 386 running Windows 3.1 without dropping frames! -- Elaine Schneider Tape trading list upon request. SASE required for international mail. From klee@demon.co.uk Thu Jun 29 02:13:15 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!demon!klee From: klee@demon.co.uk (Kenji Lee) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jun29.021315.6251@demon.co.uk> Date: Thu, 29 Jun 1995 02:13:15 GMT References: <1995Jun27.011015.4761@cern.ch> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jun27.011015.4761@cern.ch>, eschneider@cern.ch (Elaine Schneider) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- === Kenji Lee === Dept of Electrical Engineering, Demon Internet Services UK "Row 14. No joke." From bfournier@pipeline.com Thu Jun 29 09:36:15 1995 Path: ashpoly!cascade!mxgate!coyoacan!pipeline!bfournier From: bfournier@pipeline.com (Bastien Fournier) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jun29.093615.5607@pipeline.com> Date: Thu, 29 Jun 1995 09:36:15 GMT References: <1995Jun27.011015.4761@cern.ch> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jun27.011015.4761@cern.ch>, eschneider@cern.ch (Elaine Schneider) 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! Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. -- Bastien Fournier -- The Pipeline Internet Network "Row 14. No joke." From ssilva@tum.de Sat Jul 01 12:22:15 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!tum!ssilva From: ssilva@tum.de (Steve Silva) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul01.122215.2976@tum.de> Date: Sat, 01 Jul 1995 12:22:15 GMT References: <1995Jun27.011015.4761@cern.ch> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Jun27.011015.4761@cern.ch>, eschneider@cern.ch (Elaine Schneider) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Steve Silva *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0