From mcampbell@clari.net Sun Nov 10 13:38:00 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!clari!mcampbell From: mcampbell@clari.net (Mike Campbell) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Nov10.133800.4046@clari.net> Date: Sun, 10 Nov 1996 13:38:00 GMT Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: NewsWatcher 2.0b24 Lines: 11 Wrote an Amiga assembly program that uses Paula's DMA audio channels to sample and track the Stardust subcarrier. 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. 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! -- Mike Campbell | mcampbell@clari.net PGP Key fingerprint: 1D71 5DAB 9D04 8A49 "Keep the channels open." From klopez@unam.mx Tue Nov 12 15:23:00 1996 Path: ashpoly!cascade!brgate!saturno!unam!klopez From: klopez@unam.mx (Kirsty López) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Nov12.152300.4852@unam.mx> Date: Tue, 12 Nov 1996 15:23:00 GMT References: <1996Nov10.133800.4046@clari.net> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Nov10.133800.4046@clari.net>, mcampbell@clari.net (Mike Campbell) 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. -- === Kirsty López === Dept of Electrical Engineering, Universidad Nacional Autónoma de México (DGSCA) "Row 14. No joke." From jfournier@kiae.su Wed Nov 13 22:36:00 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!kiae!jfournier From: jfournier@kiae.su (Jens Fournier) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Nov13.223600.4896@kiae.su> Date: Wed, 13 Nov 1996 22:36:00 GMT References: <1996Nov10.133800.4046@clari.net> <1996Nov12.152300.4852@unam.mx> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Nov12.152300.4852@unam.mx>, klopez@unam.mx (Kirsty López) writes: > Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Jens Fournier Hayes Optima 288 @ 9600 Telebit bps "The hatch is open. Is anyone listening?" From lpopov@pacbell.net Fri Nov 15 21:46:00 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!pacbell!lpopov From: lpopov@pacbell.net (Lucia Popov) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Nov15.214600.8313@pacbell.net> Date: Fri, 15 Nov 1996 21:46:00 GMT References: <1996Nov10.133800.4046@clari.net> <1996Nov12.152300.4852@unam.mx> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Nov12.152300.4852@unam.mx>, klopez@unam.mx (Kirsty López) writes: > Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- Lucia Popov US Robotics Courier V.34 @ 33,600 bps "Marcus is not one man." From ppark@netcom.com Sun Nov 17 13:31:00 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!netcom!ppark From: ppark@netcom.com (Pavel Park) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Nov17.133100.1332@netcom.com> Date: Sun, 17 Nov 1996 13:31:00 GMT References: <1996Nov10.133800.4046@clari.net> <1996Nov12.152300.4852@unam.mx> <1996Nov13.223600.4896@kiae.su> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1996Nov13.223600.4896@kiae.su>, jfournier@kiae.su (Jens Fournier) writes: > Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Pavel Park Tape trading list upon request. SASE required for international mail.