From dduarte@rwth-aachen.de Mon Sep 04 02:03:35 1995 Path: ashpoly!cascade!transat!ukc!fennimore!rwth-aachen!dduarte From: dduarte@rwth-aachen.de (Diego Duarte) Newsgroups: comp.sys.m68k Subject: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep04.020335.6155@rwth-aachen.de> Date: Mon, 04 Sep 1995 02:03:35 GMT Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: NewsWatcher 2.0b24 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? -- Diego Duarte US Robotics Courier V.34 @ 19,200 bps "Do not worship the copy." From jmartinez@cern.ch Tue Sep 05 03:30:35 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!cern!jmartinez From: jmartinez@cern.ch (Jens Martínez) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep05.033035.6515@cern.ch> Date: Tue, 05 Sep 1995 03:30:35 GMT References: <1995Sep04.020335.6155@rwth-aachen.de> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Sep04.020335.6155@rwth-aachen.de>, dduarte@rwth-aachen.de (Diego Duarte) 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. -- Jens Martínez *PLONK* filter active for trolls. PC-9821Ap2 (NEC) - NetBSD 1.0