From llindqvist@panix.com Mon Feb 13 12:01:11 1995 Path: ashpoly!cascade!bigsur!panix!llindqvist From: llindqvist@panix.com (Lisa Lindqvist) Newsgroups: comp.sys.m68k Subject: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Feb13.120111.8885@panix.com> Date: Mon, 13 Feb 1995 12:01:11 GMT Organization: Public Access Unix of New York NNTP-Posting-Host: panix.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. I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- === Lisa Lindqvist === Dept of Electrical Engineering, Public Access Unix of New York "When every node is whole, the channel opens." From rmacdonald@cam.ac.uk Tue Feb 14 06:44:11 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!cam!rmacdonald From: rmacdonald@cam.ac.uk (Renata MacDonald) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Feb14.064411.5766@cam.ac.uk> Date: Tue, 14 Feb 1995 06:44:11 GMT References: <1995Feb13.120111.8885@panix.com> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Feb13.120111.8885@panix.com>, llindqvist@panix.com (Lisa Lindqvist) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- Renata MacDonald "Hold for relay." Amiga 1200 (Blizzard 030/50) / AmigaOS 3.1