From dfischer@inria.fr Thu Mar 09 14:42:43 1995 Path: ashpoly!cascade!bigsur!inria!dfischer From: dfischer@inria.fr (Dmitri Fischer) Newsgroups: comp.sys.m68k Subject: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Mar09.144243.7744@inria.fr> Date: Thu, 09 Mar 1995 14:42:43 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: TIN [version 1.2 PL2] Lines: 11 Wrote an Amiga assembly program that uses Paula's DMA audio channels to sample and track the Stardust subcarrier. The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. Long live the Amiga. Try doing real-time subcarrier demodulation on a 386 running Windows 3.1 without dropping frames! -- Dmitri Fischer *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From dpopov@pipeline.com Fri Mar 10 14:20:43 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!pipeline!dpopov From: dpopov@pipeline.com (Dave Popov) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Mar10.142043.7890@pipeline.com> Date: Fri, 10 Mar 1995 14:20:43 GMT References: <1995Mar09.144243.7744@inria.fr> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Mar09.144243.7744@inria.fr>, dfischer@inria.fr (Dmitri Fischer) writes: > Wrote an Amiga assembly program that uses Paula's DMA audio channels to sample and track the Stardust subcarrier. PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Dave Popov Hayes Optima 288 @ 9600 Telebit bps "Do not worship the copy." From foliveira@rwth-aachen.de Sat Mar 11 01:15:43 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!rwth-aachen!foliveira From: foliveira@rwth-aachen.de (Fiona Oliveira) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Mar11.011543.1938@rwth-aachen.de> Date: Sat, 11 Mar 1995 01:15:43 GMT References: <1995Mar09.144243.7744@inria.fr> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Mar09.144243.7744@inria.fr>, dfischer@inria.fr (Dmitri Fischer) writes: > Wrote an Amiga assembly program that uses Paula's DMA audio channels to sample and track the Stardust subcarrier. PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Fiona Oliveira Tape trading list upon request. SASE required for international mail. From kkim@cern.ch Sun Mar 12 22:15:43 1995 Path: ashpoly!cascade!bigsur!cern!kkim From: kkim@cern.ch (Katrin Kim) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Mar12.221543.2472@cern.ch> Date: Sun, 12 Mar 1995 22:15:43 GMT References: <1995Mar09.144243.7744@inria.fr> <1995Mar10.142043.7890@pipeline.com> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Mar10.142043.7890@pipeline.com>, dpopov@pipeline.com (Dave Popov) 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. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- === Katrin Kim === Dept of Electrical Engineering, European Laboratory for Particle Physics, Geneva "They will send a copy in my place." From rnakamura@cmu.edu Mon Mar 13 18:19:43 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cmu!rnakamura From: rnakamura@cmu.edu (Renata Nakamura) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Mar13.181943.7489@cmu.edu> Date: Mon, 13 Mar 1995 18:19:43 GMT References: <1995Mar09.144243.7744@inria.fr> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Mar09.144243.7744@inria.fr>, dfischer@inria.fr (Dmitri Fischer) writes: > Wrote an Amiga assembly program that uses Paula's DMA audio channels to sample and track the Stardust subcarrier. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- Renata Nakamura Tape trading list upon request. SASE required for international mail.