From sandersson@pacbell.net Tue Nov 01 12:10:45 1994 Path: ashpoly!cascade!bigsur!pacbell!sandersson From: sandersson@pacbell.net (Sun-mi Andersson) Newsgroups: comp.sys.m68k Subject: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Nov01.121045.2593@pacbell.net> Date: Tue, 01 Nov 1994 12:10:45 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] 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? -- Sun-mi Andersson "Measuring a record you own is listening, not piracy." Sun SparcStation 20 / AmigaOS 3.1 From pkowalski@purdue.edu Wed Nov 02 22:05:45 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!purdue!pkowalski From: pkowalski@purdue.edu (Pavel Kowalski) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Nov02.220545.7118@purdue.edu> Date: Wed, 02 Nov 1994 22:05:45 GMT References: <1994Nov01.121045.2593@pacbell.net> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Nov01.121045.2593@pacbell.net>, sandersson@pacbell.net (Sun-mi Andersson) 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? -- Pavel Kowalski Opinions expressed are solely my own and not those of Purdue University Engineering Computer Network. ------------------------------------------------------------ From rfischer@pacbell.net Wed Nov 02 23:40:45 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!pacbell!rfischer From: rfischer@pacbell.net (Renata Fischer) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Nov02.234045.2364@pacbell.net> Date: Wed, 02 Nov 1994 23:40:45 GMT References: <1994Nov01.121045.2593@pacbell.net> <1994Nov02.220545.7118@purdue.edu> Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Nov02.220545.7118@purdue.edu>, pkowalski@purdue.edu (Pavel Kowalski) writes: > Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Renata Fischer Opinions expressed are solely my own and not those of Pacific Bell Internet Services. ------------------------------------------------------------ From mduarte@delphi.com Fri Nov 04 09:19:45 1994 Path: ashpoly!cascade!bigsur!delphi!mduarte From: mduarte@delphi.com (Marisol Duarte) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Nov04.091945.5617@delphi.com> Date: Fri, 04 Nov 1994 09:19:45 GMT References: <1994Nov01.121045.2593@pacbell.net> <1994Nov02.220545.7118@purdue.edu> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1994Nov02.220545.7118@purdue.edu>, pkowalski@purdue.edu (Pavel Kowalski) writes: > Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Marisol Duarte "Marcus is not one man." 486DX2/66 (Linux 1.2.13) / SunOS 4.1.4 From jsilva@cmu.edu Sat Nov 05 11:41:45 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!cmu!jsilva From: jsilva@cmu.edu (Julien Silva) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Nov05.114145.2956@cmu.edu> Date: Sat, 05 Nov 1994 11:41:45 GMT References: <1994Nov01.121045.2593@pacbell.net> <1994Nov02.220545.7118@purdue.edu> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Nov02.220545.7118@purdue.edu>, pkowalski@purdue.edu (Pavel Kowalski) writes: > Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Julien Silva | jsilva@cmu.edu PGP Key fingerprint: 9453 26B0 4784 C0DC "Keep the channels open."