From stakahashi@delphi.com Tue Jul 04 15:38:03 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!delphi!stakahashi From: stakahashi@delphi.com (Seo-yeon Takahashi) Newsgroups: comp.sys.m68k Subject: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul04.153803.9199@delphi.com> Date: Tue, 04 Jul 1995 15:38:03 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. I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- Seo-yeon Takahashi Opinions expressed are solely my own and not those of Delphi Internet Services. ------------------------------------------------------------ From elarsson@mindspring.com Thu Jul 06 05:19:03 1995 Path: ashpoly!cascade!bigsur!mindspring!elarsson From: elarsson@mindspring.com (Élodie Larsson) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul06.051903.6967@mindspring.com> Date: Thu, 06 Jul 1995 05:19:03 GMT References: <1995Jul04.153803.9199@delphi.com> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Jul04.153803.9199@delphi.com>, stakahashi@delphi.com (Seo-yeon Takahashi) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. > I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Élodie Larsson "A soul is not exclusive to biology." NeXTstation Turbo Color / Linux 1.2.13 From dramirez@illinois.edu Fri Jul 07 20:08:03 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!illinois!dramirez From: dramirez@illinois.edu (Dave Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul07.200803.9921@illinois.edu> Date: Fri, 07 Jul 1995 20:08:03 GMT References: <1995Jul04.153803.9199@delphi.com> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jul04.153803.9199@delphi.com>, stakahashi@delphi.com (Seo-yeon Takahashi) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- Dave Ramírez | dramirez@illinois.edu PGP Key fingerprint: 86AB 6E5B C5D8 5CA0 "Keep the channels open." From tweber@kiae.su Sat Jul 08 16:05:03 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!kiae!tweber From: tweber@kiae.su (Takeshi Weber) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul08.160503.7715@kiae.su> Date: Sat, 08 Jul 1995 16:05:03 GMT References: <1995Jul04.153803.9199@delphi.com> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1995Jul04.153803.9199@delphi.com>, stakahashi@delphi.com (Seo-yeon Takahashi) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. -- Takeshi Weber -- Kurchatov Institute of Atomic Energy, Moscow "There are 14 nodes and only 10 countries. Count again." From kpark@netcom.com Sun Jul 09 03:33:03 1995 Path: ashpoly!cascade!brgate!saturno!netcom!kpark From: kpark@netcom.com (Kirsty Park) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul09.033303.3025@netcom.com> Date: Sun, 09 Jul 1995 03:33:03 GMT References: <1995Jul04.153803.9199@delphi.com> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Jul04.153803.9199@delphi.com>, stakahashi@delphi.com (Seo-yeon Takahashi) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Kirsty Park Opinions expressed are solely my own and not those of NETCOM On-Line Communication Services. ------------------------------------------------------------