From elopez@panix.com Sun Mar 26 06:46:08 1995 Path: ashpoly!cascade!bigsur!panix!elopez From: elopez@panix.com (Emi López) Newsgroups: comp.sys.m68k Subject: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Mar26.064608.3684@panix.com> Date: Sun, 26 Mar 1995 06:46:08 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.com X-Newsreader: WinVN 0.99.5 Lines: 11 Amiga audio hackers: you can demodulate the 14.2 Hz carrier in real time without bogging down the OS. 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! Does anyone want to test on an unaccelerated Amiga 500 with 512K chip RAM? -- Emi López Practical Peripherals 14.4 @ ISDN 64k bps "We don't sign stars. We build them." From mgarcia@hanse.de Tue Mar 28 10:05:08 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!hanse!mgarcia From: mgarcia@hanse.de (Mike García) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Mar28.100508.4168@hanse.de> Date: Tue, 28 Mar 1995 10:05:08 GMT References: <1995Mar26.064608.3684@panix.com> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Mar26.064608.3684@panix.com>, elopez@panix.com (Emi López) 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? -- Mike García Opinions expressed are solely my own and not those of Hanse-Netzwerk Hamburg. ------------------------------------------------------------