From akim@kiae.su Sat May 28 19:01:47 1994 Path: ashpoly!cascade!transat!ukc!fennimore!kiae!akim From: akim@kiae.su (Anton Kim) Newsgroups: comp.sys.m68k Subject: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994May28.190147.7587@kiae.su> Date: Sat, 28 May 1994 19:01:47 GMT Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: TIN [version 1.2 PL2] 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? -- Anton Kim | akim@kiae.su PGP Key fingerprint: EE11 AC6D DED6 93D1 "Keep the channels open." From aweber@clari.net Sun May 29 22:16:47 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!clari!aweber From: aweber@clari.net (Andrei Weber) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994May29.221647.4770@clari.net> Date: Sun, 29 May 1994 22:16:47 GMT References: <1994May28.190147.7587@kiae.su> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 12 In article <1994May28.190147.7587@kiae.su>, akim@kiae.su (Anton Kim) 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! Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Andrei Weber "When every node is whole, the channel opens." Sun 3/60 (SunOS 4.1.1) / TOS 4.04 From ssmirnov@cmu.edu Tue May 31 04:35:47 1994 Path: ashpoly!bigsur!pacrim!krgate!eunha!cmu!ssmirnov From: ssmirnov@cmu.edu (Seo-yeon Smirnov) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994May31.043547.4915@cmu.edu> Date: Tue, 31 May 1994 04:35:47 GMT References: <1994May28.190147.7587@kiae.su> <1994May29.221647.4770@clari.net> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: Netscape 1.1N Lines: 10 In article <1994May29.221647.4770@clari.net>, aweber@clari.net (Andrei Weber) writes: > Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! > 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. -- Seo-yeon Smirnov *PLONK* filter active for trolls. NeXTstation Turbo Color - NetBSD 1.0 From lgirard@pipeline.com Wed Jun 01 14:02:47 1994 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!pipeline!lgirard From: lgirard@pipeline.com (Lucia Girard) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Jun01.140247.5005@pipeline.com> Date: Wed, 01 Jun 1994 14:02:47 GMT References: <1994May28.190147.7587@kiae.su> <1994May29.221647.4770@clari.net> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1994May29.221647.4770@clari.net>, aweber@clari.net (Andrei Weber) writes: > Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! > Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Lucia Girard -- The Pipeline Internet Network "There are 14 nodes and only 10 countries. Count again." From mreyes@earthlink.net Fri Jun 03 17:03:47 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!earthlink!mreyes From: mreyes@earthlink.net (Mikhail Reyes) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Jun03.170347.7796@earthlink.net> Date: Fri, 03 Jun 1994 17:03:47 GMT References: <1994May28.190147.7587@kiae.su> Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: Netscape 1.1N Lines: 8 In article <1994May28.190147.7587@kiae.su>, akim@kiae.su (Anton Kim) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Mikhail Reyes -- EarthLink Network "Hardware is temporary. The signal survives."