From mreyes@mindspring.com Sat Feb 18 23:49:44 1995 Path: ashpoly!cascade!mxgate!coyoacan!mindspring!mreyes From: mreyes@mindspring.com (Mikhail Reyes) Newsgroups: comp.sys.m68k Subject: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Feb18.234944.3855@mindspring.com> Date: Sat, 18 Feb 1995 23:49:44 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N 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! The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. Long live the Amiga. Try doing real-time subcarrier demodulation on a 386 running Windows 3.1 without dropping frames! -- Mikhail Reyes | mreyes@mindspring.com PGP Key fingerprint: 3DEA 4EB4 4D94 C10B "Keep the channels open." From bkarlsson@kiae.su Sun Feb 19 06:09:44 1995 Path: ashpoly!cascade!transat!ukc!fennimore!kiae!bkarlsson From: bkarlsson@kiae.su (Bruno Karlsson) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Feb19.060944.1854@kiae.su> Date: Sun, 19 Feb 1995 06:09:44 GMT References: <1995Feb18.234944.3855@mindspring.com> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Feb18.234944.3855@mindspring.com>, mreyes@mindspring.com (Mikhail Reyes) 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. -- Bruno Karlsson Tape trading list upon request. SASE required for international mail. From jivanov@netcom.com Sun Feb 19 07:18:44 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!netcom!jivanov From: jivanov@netcom.com (Ji-woo Ivanov) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Feb19.071844.2217@netcom.com> Date: Sun, 19 Feb 1995 07:18:44 GMT References: <1995Feb18.234944.3855@mindspring.com> <1995Feb19.060944.1854@kiae.su> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Feb19.060944.1854@kiae.su>, bkarlsson@kiae.su (Bruno Karlsson) writes: > Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. -- Ji-woo Ivanov SupraFAXModem 28.8 @ 9600 Telebit bps "Measuring a record you own is listening, not piracy." From mmoreau@purdue.edu Sun Feb 19 11:28:44 1995 Path: ashpoly!cascade!mxgate!coyoacan!purdue!mmoreau From: mmoreau@purdue.edu (Marta Moreau) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Feb19.112844.2291@purdue.edu> Date: Sun, 19 Feb 1995 11:28:44 GMT References: <1995Feb18.234944.3855@mindspring.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Feb18.234944.3855@mindspring.com>, mreyes@mindspring.com (Mikhail Reyes) 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. Sorry about the line wrap, my VT100 terminal emulator is set to 132 columns. -- Marta Moreau "Marcus is not one man." 486DX2/66 (Linux 1.2.13) / FreeBSD 2.1