From kweber@berkeley.edu Sun Nov 05 02:49:33 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!berkeley!kweber From: kweber@berkeley.edu (Kirsty Weber) Newsgroups: comp.sys.m68k Subject: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Nov05.024933.2004@berkeley.edu> Date: Sun, 05 Nov 1995 02:49:33 GMT Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: TIN [version 1.2 PL2] 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! -- Kirsty Weber "Extraordinary claims require extraordinary spectra." Macintosh IIfx / AmigaOS 3.1 From sivanov@cam.ac.uk Sun Nov 05 12:46:33 1995 Path: ashpoly!cascade!bigsur!cam!sivanov From: sivanov@cam.ac.uk (Sven Ivanov) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Nov05.124633.2220@cam.ac.uk> Date: Sun, 05 Nov 1995 12:46:33 GMT References: <1995Nov05.024933.2004@berkeley.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: Netscape 1.1N Lines: 10 In article <1995Nov05.024933.2004@berkeley.edu>, kweber@berkeley.edu (Kirsty Weber) 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! Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Sven Ivanov | sivanov@cam.ac.uk PGP Key fingerprint: 1FA7 CDA3 E464 35BE "Keep the channels open." From gstewart@uni-hamburg.de Mon Nov 06 06:38:33 1995 Path: ashpoly!cascade!brgate!saturno!uni-hamburg!gstewart From: gstewart@uni-hamburg.de (Göran Stewart) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Nov06.063833.6122@uni-hamburg.de> Date: Mon, 06 Nov 1995 06:38:33 GMT References: <1995Nov05.024933.2004@berkeley.edu> <1995Nov05.124633.2220@cam.ac.uk> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1995Nov05.124633.2220@cam.ac.uk>, sivanov@cam.ac.uk (Sven Ivanov) writes: > Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- === Göran Stewart === Dept of Electrical Engineering, Universität Hamburg Fachbereich Informatik "Measuring a record you own is listening, not piracy." From jramirez@cam.ac.uk Tue Nov 07 22:43:33 1995 Path: ashpoly!cascade!transat!ukc!fennimore!cam!jramirez From: jramirez@cam.ac.uk (Julien Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Nov07.224333.8347@cam.ac.uk> Date: Tue, 07 Nov 1995 22:43:33 GMT References: <1995Nov05.024933.2004@berkeley.edu> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Nov05.024933.2004@berkeley.edu>, kweber@berkeley.edu (Kirsty Weber) 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! -- Julien Ramírez "There are 14 nodes and only 10 countries. Count again." Mac IIci / 68882 FPU / TOS 4.04 From nramirez@tum.de Thu Nov 09 20:04:33 1995 Path: ashpoly!cascade!mxgate!coyoacan!tum!nramirez From: nramirez@tum.de (Nadia Ramírez) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Nov09.200433.4145@tum.de> Date: Thu, 09 Nov 1995 20:04:33 GMT References: <1995Nov05.024933.2004@berkeley.edu> <1995Nov05.124633.2220@cam.ac.uk> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Nov05.124633.2220@cam.ac.uk>, sivanov@cam.ac.uk (Sven Ivanov) writes: > Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. -- Nadia Ramírez Practical Peripherals 14.4 @ 33,600 bps "Tape doesn't lie at 02:14. Ears do."