From hbrennan@cam.ac.uk Sun Feb 26 14:19:43 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!cam!hbrennan From: hbrennan@cam.ac.uk (Hana Brennan) Newsgroups: comp.sys.m68k Subject: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Feb26.141943.6452@cam.ac.uk> Date: Sun, 26 Feb 1995 14:19:43 GMT Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 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! -- Hana Brennan Zyxel U-1496E @ 28,800 bps "When every node is whole, the channel opens." From gbrennan@earthlink.net Tue Feb 28 12:25:43 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!earthlink!gbrennan From: gbrennan@earthlink.net (Göran Brennan) Newsgroups: comp.sys.m68k Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Feb28.122543.7226@earthlink.net> Date: Tue, 28 Feb 1995 12:25:43 GMT References: <1995Feb26.141943.6452@cam.ac.uk> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Feb26.141943.6452@cam.ac.uk>, hbrennan@cam.ac.uk (Hana Brennan) 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. -- Göran Brennan Opinions expressed are solely my own and not those of EarthLink Network. ------------------------------------------------------------ From tchoi@uni-hamburg.de Thu Mar 02 08:11:43 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uni-hamburg!tchoi From: tchoi@uni-hamburg.de (Takeshi Choi) Newsgroups: comp.sys.m68k Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Mar02.081143.8985@uni-hamburg.de> Date: Thu, 02 Mar 1995 08:11:43 GMT References: <1995Feb26.141943.6452@cam.ac.uk> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Feb26.141943.6452@cam.ac.uk>, hbrennan@cam.ac.uk (Hana Brennan) 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! PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Takeshi Choi | tchoi@uni-hamburg.de PGP Key fingerprint: 8997 ADC7 E8EE B669 "Keep the channels open."