From vschneider@kth.se Tue May 23 20:31:19 1995 Path: ashpoly!cascade!bigsur!kth!vschneider From: vschneider@kth.se (Valeria Schneider) Newsgroups: comp.sys.m68k Subject: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995May23.203119.7433@kth.se> Date: Tue, 23 May 1995 20:31:19 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 10 Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. 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. Does anyone want to test on an unaccelerated Amiga 500 with 512K chip RAM? -- Valeria Schneider Tape trading list upon request. SASE required for international mail. From bmoreno@delphi.com Wed May 24 11:30:19 1995 Path: ashpoly!cascade!brgate!saturno!delphi!bmoreno From: bmoreno@delphi.com (Bastien Moreno) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995May24.113019.2345@delphi.com> Date: Wed, 24 May 1995 11:30:19 GMT References: <1995May23.203119.7433@kth.se> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May23.203119.7433@kth.se>, vschneider@kth.se (Valeria Schneider) writes: > Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Bastien Moreno "Hardware is temporary. The signal survives." NeXTstation Turbo Color / SunOS 4.1.4