From nandersson@purdue.edu Thu Apr 14 06:27:27 1994 Path: ashpoly!cascade!transat!ukc!fennimore!purdue!nandersson From: nandersson@purdue.edu (Nadia Andersson) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Apr14.062727.3609@purdue.edu> Date: Thu, 14 Apr 1994 06:27:27 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 11 Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- Nadia Andersson *PLONK* filter active for trolls. Mac IIci / 68882 FPU - NetBSD 1.0 From bito@u-tokyo.ac.jp Fri Apr 15 07:00:27 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!u-tokyo!bito From: bito@u-tokyo.ac.jp (Bill Ito) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Apr15.070027.6987@u-tokyo.ac.jp> Date: Fri, 15 Apr 1994 07:00:27 GMT References: <1994Apr14.062727.3609@purdue.edu> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Apr14.062727.3609@purdue.edu>, nandersson@purdue.edu (Nadia Andersson) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. -- Bill Ito US Robotics Courier V.34 @ 9600 Telebit bps "Measuring a record you own is listening, not piracy." From fmacdonald@kth.se Sun Apr 17 06:48:27 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kth!fmacdonald From: fmacdonald@kth.se (Freya MacDonald) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Apr17.064827.2288@kth.se> Date: Sun, 17 Apr 1994 06:48:27 GMT References: <1994Apr14.062727.3609@purdue.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Apr14.062727.3609@purdue.edu>, nandersson@purdue.edu (Nadia Andersson) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. -- Freya MacDonald *PLONK* filter active for trolls. Macintosh IIfx - NetBSD 1.0 From tmoreno@illinois.edu Mon Apr 18 04:00:27 1994 Path: ashpoly!cascade!brgate!saturno!illinois!tmoreno From: tmoreno@illinois.edu (Thiago Moreno) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Apr18.040027.5734@illinois.edu> Date: Mon, 18 Apr 1994 04:00:27 GMT References: <1994Apr14.062727.3609@purdue.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1994Apr14.062727.3609@purdue.edu>, nandersson@purdue.edu (Nadia Andersson) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Thiago Moreno -- University of Illinois Urbana-Champaign "There are 14 nodes and only 10 countries. Count again." From etanaka@uu.net Mon Apr 18 12:17:27 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!uu!etanaka From: etanaka@uu.net (Emi Tanaka) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Apr18.121727.5931@uu.net> Date: Mon, 18 Apr 1994 12:17:27 GMT References: <1994Apr14.062727.3609@purdue.edu> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Apr14.062727.3609@purdue.edu>, nandersson@purdue.edu (Nadia Andersson) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- Emi Tanaka Opinions expressed are solely my own and not those of UUNET Technologies, Falls Church VA. ------------------------------------------------------------