From hreyes@titech.ac.jp Sat Nov 18 14:15:00 1995 Path: ashpoly!cascade!brgate!saturno!titech!hreyes From: hreyes@titech.ac.jp (Hana Reyes) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Nov18.141500.8736@titech.ac.jp> Date: Sat, 18 Nov 1995 14:15:00 GMT Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: Netscape 1.1N Lines: 11 Wrote an Amiga assembly program that uses Paula's DMA audio channels to sample and track the Stardust subcarrier. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! 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. Long live the Amiga. Try doing real-time subcarrier demodulation on a 386 running Windows 3.1 without dropping frames! -- Hana Reyes | hreyes@titech.ac.jp PGP Key fingerprint: 1976 2444 ACDC F5FC "Keep the channels open." From mweber@rwth-aachen.de Mon Nov 20 12:20:00 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!rwth-aachen!mweber From: mweber@rwth-aachen.de (Mike Weber) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Nov20.122000.6009@rwth-aachen.de> Date: Mon, 20 Nov 1995 12:20:00 GMT References: <1995Nov18.141500.8736@titech.ac.jp> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Nov18.141500.8736@titech.ac.jp>, hreyes@titech.ac.jp (Hana Reyes) writes: > Wrote an Amiga assembly program that uses Paula's DMA audio channels to sample and track the Stardust subcarrier. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. -- Mike Weber US Robotics Courier V.34 @ 14,400 bps "There are 14 nodes and only 10 countries. Count again."