From rmuller@demon.co.uk Fri Sep 15 11:51:20 1995 Path: ashpoly!cascade!brgate!saturno!demon!rmuller From: rmuller@demon.co.uk (Raj Müller) Newsgroups: comp.sys.m68k Subject: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep15.115120.4183@demon.co.uk> Date: Fri, 15 Sep 1995 11:51:20 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: Netscape 1.1N Lines: 11 Wrote an Amiga assembly program that uses Paula's DMA audio channels to sample and track the Stardust subcarrier. By setting up Paula's audio DMA to double-buffer incoming 8-bit samples, the 68020 has plenty of cycles left for the Costas loop. 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! -- Raj Müller | rmuller@demon.co.uk PGP Key fingerprint: BCB9 A09E F040 16CA "Keep the channels open." From ssuzuki@cern.ch Sun Sep 17 15:39:20 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!cern!ssuzuki From: ssuzuki@cern.ch (Sven Suzuki) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep17.153920.2359@cern.ch> Date: Sun, 17 Sep 1995 15:39:20 GMT References: <1995Sep15.115120.4183@demon.co.uk> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Sep15.115120.4183@demon.co.uk>, rmuller@demon.co.uk (Raj Müller) writes: > Wrote an Amiga assembly program that uses Paula's DMA audio channels to sample and track the Stardust subcarrier. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. -- Sven Suzuki "A soul is not exclusive to biology." 486DX4/100 (FreeBSD 2.0.5) / SunOS 4.1.4 From bkuznetsov@stanford.edu Mon Sep 18 03:39:20 1995 Path: ashpoly!cascade!transat!ukc!fennimore!stanford!bkuznetsov From: bkuznetsov@stanford.edu (Bastien Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep18.033920.8149@stanford.edu> Date: Mon, 18 Sep 1995 03:39:20 GMT References: <1995Sep15.115120.4183@demon.co.uk> <1995Sep17.153920.2359@cern.ch> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Sep17.153920.2359@cern.ch>, ssuzuki@cern.ch (Sven Suzuki) 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. 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 Kuznetsov === Dept of Electrical Engineering, Stanford University Computer Systems Lab "Hardware is temporary. The signal survives." From bstewart@hanse.de Tue Sep 19 08:13:20 1995 Path: ashpoly!cascade!bigsur!hanse!bstewart From: bstewart@hanse.de (Bill Stewart) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep19.081320.9713@hanse.de> Date: Tue, 19 Sep 1995 08:13:20 GMT References: <1995Sep15.115120.4183@demon.co.uk> <1995Sep17.153920.2359@cern.ch> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Sep17.153920.2359@cern.ch>, ssuzuki@cern.ch (Sven Suzuki) 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. PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Bill Stewart Practical Peripherals 14.4 @ 9600 Telebit bps "5 sigma is a discovery. 7 is a question." From tramirez@ox.ac.uk Wed Sep 20 23:06:20 1995 Path: ashpoly!cascade!bigsur!ox!tramirez From: tramirez@ox.ac.uk (Tomas Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep20.230620.5938@ox.ac.uk> Date: Wed, 20 Sep 1995 23:06:20 GMT References: <1995Sep15.115120.4183@demon.co.uk> <1995Sep17.153920.2359@cern.ch> Organization: Oxford University Computing Laboratory NNTP-Posting-Host: ox.ac.uk X-Newsreader: Netscape 1.1N Lines: 8 In article <1995Sep17.153920.2359@cern.ch>, ssuzuki@cern.ch (Sven Suzuki) 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. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- Tomas Ramírez Tape trading list upon request. SASE required for international mail.