From avasiliev@earthlink.net Sat Apr 16 15:29:07 1994 Path: ashpoly!cascade!mxgate!coyoacan!earthlink!avasiliev From: avasiliev@earthlink.net (Anton Vasiliev) Newsgroups: comp.sys.m68k Subject: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Apr16.152907.1986@earthlink.net> Date: Sat, 16 Apr 1994 15:29:07 GMT Organization: EarthLink Network NNTP-Posting-Host: earthlink.net X-Newsreader: Netscape 1.1N Lines: 11 Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! Does anyone want to test on an unaccelerated Amiga 500 with 512K chip RAM? -- Anton Vasiliev *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0 From nsouza@tum.de Mon Apr 18 05:36:07 1994 Path: ashpoly!cascade!transat!ukc!fennimore!tum!nsouza From: nsouza@tum.de (Nadine Souza) Newsgroups: comp.sys.m68k Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Apr18.053607.3040@tum.de> Date: Mon, 18 Apr 1994 05:36:07 GMT References: <1994Apr16.152907.1986@earthlink.net> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: Netscape 1.1N Lines: 8 In article <1994Apr16.152907.1986@earthlink.net>, avasiliev@earthlink.net (Anton Vasiliev) 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. -- Nadine Souza Tape trading list upon request. SASE required for international mail. From pschneider@cam.ac.uk Mon Apr 18 23:53:07 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!cam!pschneider From: pschneider@cam.ac.uk (Pavel Schneider) Newsgroups: comp.sys.m68k Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Apr18.235307.9306@cam.ac.uk> Date: Mon, 18 Apr 1994 23:53:07 GMT References: <1994Apr16.152907.1986@earthlink.net> <1994Apr18.053607.3040@tum.de> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1994Apr18.053607.3040@tum.de>, nsouza@tum.de (Nadine Souza) 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! Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Pavel Schneider "In theory there is no difference between theory and practice." Sun 3/60 (SunOS 4.1.1) / FreeBSD 2.1 From bcampbell@kiae.su Wed Apr 20 07:52:07 1994 Path: ashpoly!cascade!brgate!saturno!kiae!bcampbell From: bcampbell@kiae.su (Bruno Campbell) Newsgroups: comp.sys.m68k Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Apr20.075207.4886@kiae.su> Date: Wed, 20 Apr 1994 07:52:07 GMT References: <1994Apr16.152907.1986@earthlink.net> <1994Apr18.053607.3040@tum.de> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1994Apr18.053607.3040@tum.de>, nsouza@tum.de (Nadine Souza) writes: > Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Bruno Campbell -- Kurchatov Institute of Atomic Energy, Moscow "The hatch is open. Is anyone listening?"