From mivanov@pipeline.com Sat Oct 15 10:55:20 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!mivanov From: mivanov@pipeline.com (Mathieu Ivanov) Newsgroups: comp.sys.m68k Subject: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Oct15.105520.1238@pipeline.com> Date: Sat, 15 Oct 1994 10:55:20 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: Netscape 1.1N Lines: 11 Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. 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. 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. -- Mathieu Ivanov | mivanov@pipeline.com PGP Key fingerprint: 88CD C8E6 2E22 43C5 "Keep the channels open." From sito@uu.net Sun Oct 16 19:31:20 1994 Path: ashpoly!cascade!transat!ukc!fennimore!uu!sito From: sito@uu.net (Sergei Ito) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Oct16.193120.1493@uu.net> Date: Sun, 16 Oct 1994 19:31:20 GMT References: <1994Oct15.105520.1238@pipeline.com> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Oct15.105520.1238@pipeline.com>, mivanov@pipeline.com (Mathieu Ivanov) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Sergei Ito "Tape doesn't lie at 02:14. Ears do." Atari Falcon 030 / SunOS 4.1.4 From kgonzalez@u-tokyo.ac.jp Mon Oct 17 17:18:20 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!u-tokyo!kgonzalez From: kgonzalez@u-tokyo.ac.jp (Karen González) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Oct17.171820.3185@u-tokyo.ac.jp> Date: Mon, 17 Oct 1994 17:18:20 GMT References: <1994Oct15.105520.1238@pipeline.com> <1994Oct16.193120.1493@uu.net> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: Netscape 1.1N Lines: 11 In article <1994Oct16.193120.1493@uu.net>, sito@uu.net (Sergei Ito) writes: > Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Karen González Zyxel U-1496E @ 9600 Telebit bps "We don't sign stars. We build them."