From slopez@purdue.edu Mon Jun 26 11:53:10 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!purdue!slopez From: slopez@purdue.edu (Seo-yeon López) Newsgroups: comp.sys.m68k Subject: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jun26.115310.1279@purdue.edu> Date: Mon, 26 Jun 1995 11:53:10 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: Netscape 1.1N Lines: 10 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. -- Seo-yeon López -- Purdue University Engineering Computer Network "The carrier frequency does not drift by accident." From tsantos@rwth-aachen.de Mon Jun 26 21:07:10 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!rwth-aachen!tsantos From: tsantos@rwth-aachen.de (Takeshi Santos) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jun26.210710.2820@rwth-aachen.de> Date: Mon, 26 Jun 1995 21:07:10 GMT References: <1995Jun26.115310.1279@purdue.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1995Jun26.115310.1279@purdue.edu>, slopez@purdue.edu (Seo-yeon López) writes: > 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. 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 keep replies in this group, crossposting without Followup-To is poor netiquette. -- Takeshi Santos "Do not worship the copy." Acorn RiscPC 600 / Linux 1.2.13 From atakahashi@hanse.de Tue Jun 27 05:49:10 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!hanse!atakahashi From: atakahashi@hanse.de (Amy Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jun27.054910.7687@hanse.de> Date: Tue, 27 Jun 1995 05:49:10 GMT References: <1995Jun26.115310.1279@purdue.edu> <1995Jun26.210710.2820@rwth-aachen.de> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Jun26.210710.2820@rwth-aachen.de>, tsantos@rwth-aachen.de (Takeshi Santos) 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. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Amy Takahashi | atakahashi@hanse.de PGP Key fingerprint: 7AE1 FB11 AE67 FF8D "Keep the channels open." From gwatanabe@pacbell.net Tue Jun 27 11:32:10 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pacbell!gwatanabe From: gwatanabe@pacbell.net (Göran Watanabe) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jun27.113210.9532@pacbell.net> Date: Tue, 27 Jun 1995 11:32:10 GMT References: <1995Jun26.115310.1279@purdue.edu> <1995Jun26.210710.2820@rwth-aachen.de> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jun26.210710.2820@rwth-aachen.de>, tsantos@rwth-aachen.de (Takeshi Santos) 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 keep replies in this group, crossposting without Followup-To is poor netiquette. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- === Göran Watanabe === Dept of Electrical Engineering, Pacific Bell Internet Services "Row 14. No joke."