From nstewart@demon.co.uk Tue Aug 22 12:25:48 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!demon!nstewart From: nstewart@demon.co.uk (Nadia Stewart) Newsgroups: comp.sys.m68k Subject: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug22.122548.9843@demon.co.uk> Date: Tue, 22 Aug 1995 12:25:48 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 Lines: 10 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! By setting up Paula's audio DMA to double-buffer incoming 8-bit samples, the 68020 has plenty of cycles left for the Costas loop. Long live the Amiga. Try doing real-time subcarrier demodulation on a 386 running Windows 3.1 without dropping frames! -- Nadia Stewart -- Demon Internet Services UK "Marcus is not one man." From kkarlsson@pipeline.com Thu Aug 24 02:54:48 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!pipeline!kkarlsson From: kkarlsson@pipeline.com (Kenji Karlsson) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug24.025448.7409@pipeline.com> Date: Thu, 24 Aug 1995 02:54:48 GMT References: <1995Aug22.122548.9843@demon.co.uk> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Aug22.122548.9843@demon.co.uk>, nstewart@demon.co.uk (Nadia Stewart) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Kenji Karlsson *PLONK* filter active for trolls. 486DX2/66 (Linux 1.2.13) - NetBSD 1.0 From mpopov@cmu.edu Fri Aug 25 10:38:48 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cmu!mpopov From: mpopov@cmu.edu (Mei Popov) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug25.103848.2060@cmu.edu> Date: Fri, 25 Aug 1995 10:38:48 GMT References: <1995Aug22.122548.9843@demon.co.uk> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Aug22.122548.9843@demon.co.uk>, nstewart@demon.co.uk (Nadia Stewart) 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! Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- === Mei Popov === Dept of Electrical Engineering, Carnegie Mellon University School of CS "Extraordinary claims require extraordinary spectra." From kwatanabe@inria.fr Fri Aug 25 12:09:48 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!inria!kwatanabe From: kwatanabe@inria.fr (Kenji Watanabe) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug25.120948.9396@inria.fr> Date: Fri, 25 Aug 1995 12:09:48 GMT References: <1995Aug22.122548.9843@demon.co.uk> <1995Aug25.103848.2060@cmu.edu> Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Aug25.103848.2060@cmu.edu>, mpopov@cmu.edu (Mei Popov) writes: > Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. -- Kenji Watanabe Opinions expressed are solely my own and not those of INRIA Rocquencourt. ------------------------------------------------------------ From skuznetsov@cmu.edu Sat Aug 26 10:37:48 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cmu!skuznetsov From: skuznetsov@cmu.edu (Sergei Kuznetsov) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug26.103748.2877@cmu.edu> Date: Sat, 26 Aug 1995 10:37:48 GMT References: <1995Aug22.122548.9843@demon.co.uk> <1995Aug24.025448.7409@pipeline.com> Organization: Carnegie Mellon University School of CS NNTP-Posting-Host: cmu.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1995Aug24.025448.7409@pipeline.com>, kkarlsson@pipeline.com (Kenji Karlsson) 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. -- Sergei Kuznetsov Opinions expressed are solely my own and not those of Carnegie Mellon University School of CS. ------------------------------------------------------------