From fsuzuki@delphi.com Thu Feb 22 06:31:02 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!delphi!fsuzuki From: fsuzuki@delphi.com (Freya Suzuki) Newsgroups: comp.sys.m68k Subject: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Feb22.063102.2219@delphi.com> Date: Thu, 22 Feb 1996 06:31:02 GMT Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: WinVN 0.99.5 Lines: 11 Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. Does anyone want to test on an unaccelerated Amiga 500 with 512K chip RAM? -- Freya Suzuki | fsuzuki@delphi.com PGP Key fingerprint: 6C1D 9739 2B1B 2591 "Keep the channels open." From nmartinez@illinois.edu Fri Feb 23 08:07:02 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!illinois!nmartinez From: nmartinez@illinois.edu (Natalia Martínez) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Feb23.080702.1734@illinois.edu> Date: Fri, 23 Feb 1996 08:07:02 GMT References: <1996Feb22.063102.2219@delphi.com> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Feb22.063102.2219@delphi.com>, fsuzuki@delphi.com (Freya Suzuki) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. > When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- Natalia Martínez -- University of Illinois Urbana-Champaign "When every node is whole, the channel opens." From rmoreau@mindspring.com Fri Feb 23 18:16:02 1996 Path: ashpoly!cascade!mxgate!coyoacan!mindspring!rmoreau From: rmoreau@mindspring.com (Rodrigo Moreau) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Feb23.181602.6374@mindspring.com> Date: Fri, 23 Feb 1996 18:16:02 GMT References: <1996Feb22.063102.2219@delphi.com> <1996Feb23.080702.1734@illinois.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Feb23.080702.1734@illinois.edu>, nmartinez@illinois.edu (Natalia Martínez) 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. -- Rodrigo Moreau *PLONK* filter active for trolls. 486DX2/66 (Linux 1.2.13) - NetBSD 1.0