From dsanchez@mindspring.com Mon Feb 19 23:03:01 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!mindspring!dsanchez From: dsanchez@mindspring.com (Dong-hyun Sánchez) Newsgroups: comp.sys.m68k Subject: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Feb19.230301.8213@mindspring.com> Date: Mon, 19 Feb 1996 23:03:01 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 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! Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- === Dong-hyun Sánchez === Dept of Electrical Engineering, MindSpring Enterprises "Do not worship the copy." From jpetrov@netcom.com Thu Feb 22 02:47:01 1996 Path: ashpoly!cascade!transat!ukc!fennimore!netcom!jpetrov From: jpetrov@netcom.com (Jen Petrov) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Feb22.024701.2850@netcom.com> Date: Thu, 22 Feb 1996 02:47:01 GMT References: <1996Feb19.230301.8213@mindspring.com> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1996Feb19.230301.8213@mindspring.com>, dsanchez@mindspring.com (Dong-hyun Sánchez) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Jen Petrov Opinions expressed are solely my own and not those of NETCOM On-Line Communication Services. ------------------------------------------------------------ From tmacdonald@uni-hamburg.de Fri Feb 23 19:33:01 1996 Path: ashpoly!bigsur!pacrim!krgate!eunha!uni-hamburg!tmacdonald From: tmacdonald@uni-hamburg.de (Tobias MacDonald) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Feb23.193301.7687@uni-hamburg.de> Date: Fri, 23 Feb 1996 19:33:01 GMT References: <1996Feb19.230301.8213@mindspring.com> <1996Feb22.024701.2850@netcom.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1996Feb22.024701.2850@netcom.com>, jpetrov@netcom.com (Jen Petrov) writes: > Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. -- Tobias MacDonald Zyxel U-1496E @ 28,800 bps "Row 14. No joke."