From ftakahashi@illinois.edu Wed Aug 24 03:26:32 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!illinois!ftakahashi From: ftakahashi@illinois.edu (Fiona Takahashi) Newsgroups: comp.sys.m68k Subject: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Aug24.032632.4870@illinois.edu> Date: Wed, 24 Aug 1994 03:26:32 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 11 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! 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! -- Fiona Takahashi Opinions expressed are solely my own and not those of University of Illinois Urbana-Champaign. ------------------------------------------------------------ From mweber@pacbell.net Thu Aug 25 04:09:32 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!pacbell!mweber From: mweber@pacbell.net (Mikhail Weber) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Aug25.040932.7386@pacbell.net> Date: Thu, 25 Aug 1994 04:09:32 GMT References: <1994Aug24.032632.4870@illinois.edu> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Aug24.032632.4870@illinois.edu>, ftakahashi@illinois.edu (Fiona Takahashi) 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. -- Mikhail Weber Zyxel U-1496E @ ISDN 64k bps "There are 14 nodes and only 10 countries. Count again." From stakahashi@cmu.edu Thu Aug 25 23:55:32 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!cmu!stakahashi From: stakahashi@cmu.edu (Steve Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Aug25.235532.6595@cmu.edu> Date: Thu, 25 Aug 1994 23:55:32 GMT References: <1994Aug24.032632.4870@illinois.edu> <1994Aug25.040932.7386@pacbell.net> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1994Aug25.040932.7386@pacbell.net>, mweber@pacbell.net (Mikhail Weber) 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. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. PGP Public key available via finger or upon request. -- === Steve Takahashi === Dept of Electrical Engineering, Carnegie Mellon University School of CS "A soul is not exclusive to biology." From abrennan@tum.de Sun Aug 28 02:38:32 1994 Path: ashpoly!cascade!brgate!saturno!tum!abrennan From: abrennan@tum.de (Aiko Brennan) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Aug28.023832.5136@tum.de> Date: Sun, 28 Aug 1994 02:38:32 GMT References: <1994Aug24.032632.4870@illinois.edu> <1994Aug25.040932.7386@pacbell.net> <1994Aug25.235532.6595@cmu.edu> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Aug25.235532.6595@cmu.edu>, stakahashi@cmu.edu (Steve Takahashi) 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. -- Aiko Brennan Opinions expressed are solely my own and not those of Technische Universität München. ------------------------------------------------------------ From crobertson@mindspring.com Mon Aug 29 08:54:32 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!mindspring!crobertson From: crobertson@mindspring.com (Callum Robertson) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Aug29.085432.6006@mindspring.com> Date: Mon, 29 Aug 1994 08:54:32 GMT References: <1994Aug24.032632.4870@illinois.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 12 In article <1994Aug24.032632.4870@illinois.edu>, ftakahashi@illinois.edu (Fiona Takahashi) writes: > 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! Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! If you are posting from AOL, please read RFC 1036 before posting again. -- Callum Robertson *PLONK* filter active for trolls. Sun SparcStation 20 - NetBSD 1.0