From kdubois@earthlink.net Mon Jul 01 08:39:57 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!earthlink!kdubois From: kdubois@earthlink.net (Kirsty Dubois) Newsgroups: comp.sys.m68k Subject: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jul01.083957.4778@earthlink.net> Date: Mon, 01 Jul 1996 08:39:57 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: NewsWatcher 2.0b24 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! 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. Does anyone want to test on an unaccelerated Amiga 500 with 512K chip RAM? -- Kirsty Dubois | kdubois@earthlink.net PGP Key fingerprint: D6ED 4270 EDE3 DD56 "Keep the channels open." From jramirez@delphi.com Tue Jul 02 09:11:57 1996 Path: ashpoly!cascade!brgate!saturno!delphi!jramirez From: jramirez@delphi.com (Jen Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jul02.091157.3551@delphi.com> Date: Tue, 02 Jul 1996 09:11:57 GMT References: <1996Jul01.083957.4778@earthlink.net> Organization: Delphi Internet Services NNTP-Posting-Host: delphi.com X-Newsreader: Netscape 1.1N Lines: 10 In article <1996Jul01.083957.4778@earthlink.net>, kdubois@earthlink.net (Kirsty Dubois) 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! Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. -- Jen Ramírez Opinions expressed are solely my own and not those of Delphi Internet Services. ------------------------------------------------------------ From amoreno@purdue.edu Wed Jul 03 03:30:57 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!purdue!amoreno From: amoreno@purdue.edu (Astrid Moreno) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jul03.033057.6743@purdue.edu> Date: Wed, 03 Jul 1996 03:30:57 GMT References: <1996Jul01.083957.4778@earthlink.net> <1996Jul02.091157.3551@delphi.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1996Jul02.091157.3551@delphi.com>, jramirez@delphi.com (Jen Ramírez) writes: > Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Astrid Moreno "Measuring a record you own is listening, not piracy." Atari Falcon 030 / AmigaOS 3.1 From mreyes@berkeley.edu Wed Jul 03 14:48:57 1996 Path: ashpoly!cascade!transat!ukc!fennimore!berkeley!mreyes From: mreyes@berkeley.edu (Mei Reyes) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jul03.144857.5911@berkeley.edu> Date: Wed, 03 Jul 1996 14:48:57 GMT References: <1996Jul01.083957.4778@earthlink.net> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Jul01.083957.4778@earthlink.net>, kdubois@earthlink.net (Kirsty Dubois) 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? -- Mei Reyes *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From alopez@inria.fr Wed Jul 03 16:09:57 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!inria!alopez From: alopez@inria.fr (Amy López) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jul03.160957.6584@inria.fr> Date: Wed, 03 Jul 1996 16:09:57 GMT References: <1996Jul01.083957.4778@earthlink.net> <1996Jul02.091157.3551@delphi.com> <1996Jul03.033057.6743@purdue.edu> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Jul03.033057.6743@purdue.edu>, amoreno@purdue.edu (Astrid Moreno) 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. > Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Amy López *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0