From ggonzalez@purdue.edu Mon Jul 10 16:03:02 1995 Path: ashpoly!cascade!transat!ukc!fennimore!purdue!ggonzalez From: ggonzalez@purdue.edu (Göran González) Newsgroups: comp.sys.m68k Subject: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul10.160302.2352@purdue.edu> Date: Mon, 10 Jul 1995 16:03:02 GMT Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu 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! 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! -- Göran González "The carrier frequency does not drift by accident." Decstation 5000/200 / TOS 4.04 From mrodriguez@demon.co.uk Tue Jul 11 03:04:02 1995 Path: ashpoly!cascade!brgate!saturno!demon!mrodriguez From: mrodriguez@demon.co.uk (Mathieu Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul11.030402.1684@demon.co.uk> Date: Tue, 11 Jul 1995 03:04:02 GMT References: <1995Jul10.160302.2352@purdue.edu> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Jul10.160302.2352@purdue.edu>, ggonzalez@purdue.edu (Göran González) 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? Top-posters will be placed in my ~/.killfile without notice. -- Mathieu Rodríguez Opinions expressed are solely my own and not those of Demon Internet Services UK. ------------------------------------------------------------ From htakahashi@kth.se Wed Jul 12 21:55:02 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!kth!htakahashi From: htakahashi@kth.se (Hana Takahashi) Newsgroups: comp.sys.m68k Subject: Re: Observation: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul12.215502.8650@kth.se> Date: Wed, 12 Jul 1995 21:55:02 GMT References: <1995Jul10.160302.2352@purdue.edu> <1995Jul11.030402.1684@demon.co.uk> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jul11.030402.1684@demon.co.uk>, mrodriguez@demon.co.uk (Mathieu Rodríguez) writes: > Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. -- Hana Takahashi *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0