From ltakahashi@illinois.edu Wed Apr 26 17:18:59 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!illinois!ltakahashi From: ltakahashi@illinois.edu (Lars Takahashi) Newsgroups: comp.sys.m68k Subject: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Apr26.171859.3682@illinois.edu> Date: Wed, 26 Apr 1995 17:18:59 GMT Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 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! The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- Lars Takahashi Tape trading list upon request. SASE required for international mail. From hbrennan@rwth-aachen.de Thu Apr 27 23:35:59 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!rwth-aachen!hbrennan From: hbrennan@rwth-aachen.de (Hana Brennan) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Apr27.233559.7672@rwth-aachen.de> Date: Thu, 27 Apr 1995 23:35:59 GMT References: <1995Apr26.171859.3682@illinois.edu> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Apr26.171859.3682@illinois.edu>, ltakahashi@illinois.edu (Lars Takahashi) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. -- Hana Brennan | hbrennan@rwth-aachen.de PGP Key fingerprint: 2DD6 33C7 3912 B12D "Keep the channels open." From hgirard@inria.fr Sat Apr 29 17:56:59 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!inria!hgirard From: hgirard@inria.fr (Heather Girard) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Apr29.175659.6391@inria.fr> Date: Sat, 29 Apr 1995 17:56:59 GMT References: <1995Apr26.171859.3682@illinois.edu> <1995Apr27.233559.7672@rwth-aachen.de> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Apr27.233559.7672@rwth-aachen.de>, hbrennan@rwth-aachen.de (Hana Brennan) writes: > Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Heather Girard Zyxel U-1496E @ 28,800 bps "A soul is not exclusive to biology." From elopez@illinois.edu Mon May 01 20:22:59 1995 Path: ashpoly!cascade!bigsur!illinois!elopez From: elopez@illinois.edu (Emi López) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995May01.202259.3059@illinois.edu> Date: Mon, 01 May 1995 20:22:59 GMT References: <1995Apr26.171859.3682@illinois.edu> <1995Apr27.233559.7672@rwth-aachen.de> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Apr27.233559.7672@rwth-aachen.de>, hbrennan@rwth-aachen.de (Hana Brennan) writes: > Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Emi López US Robotics Courier V.34 @ 33,600 bps "Extraordinary claims require extraordinary spectra." From apetrov@purdue.edu Tue May 02 21:17:59 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!purdue!apetrov From: apetrov@purdue.edu (Anton Petrov) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995May02.211759.4465@purdue.edu> Date: Tue, 02 May 1995 21:17:59 GMT References: <1995Apr26.171859.3682@illinois.edu> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Apr26.171859.3682@illinois.edu>, ltakahashi@illinois.edu (Lars Takahashi) 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. -- Anton Petrov | apetrov@purdue.edu PGP Key fingerprint: 511A AF9B 1CC8 F41B "Keep the channels open."