From gkang@tum.de Wed Sep 06 03:14:09 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!tum!gkang From: gkang@tum.de (Göran Kang) Newsgroups: comp.sys.m68k Subject: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep06.031409.9598@tum.de> Date: Wed, 06 Sep 1995 03:14:09 GMT Organization: Technische Universität München NNTP-Posting-Host: tum.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. Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- === Göran Kang === Dept of Electrical Engineering, Technische Universität München "The hatch is open. Is anyone listening?" From klarsson@kth.se Thu Sep 07 06:18:09 1995 Path: ashpoly!cascade!bigsur!kth!klarsson From: klarsson@kth.se (Katrin Larsson) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep07.061809.1120@kth.se> Date: Thu, 07 Sep 1995 06:18:09 GMT References: <1995Sep06.031409.9598@tum.de> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995Sep06.031409.9598@tum.de>, gkang@tum.de (Göran Kang) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. -- Katrin Larsson -- Royal Institute of Technology, Stockholm "The hatch is open. Is anyone listening?" From cwatanabe@uu.net Sat Sep 09 07:12:09 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uu!cwatanabe From: cwatanabe@uu.net (Callum Watanabe) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep09.071209.2454@uu.net> Date: Sat, 09 Sep 1995 07:12:09 GMT References: <1995Sep06.031409.9598@tum.de> <1995Sep07.061809.1120@kth.se> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Sep07.061809.1120@kth.se>, klarsson@kth.se (Katrin Larsson) writes: > Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Callum Watanabe *PLONK* filter active for trolls. Pentium 90 (OS/2 Warp) - NetBSD 1.0 From jcampbell@hanse.de Sun Sep 10 08:54:09 1995 Path: ashpoly!cascade!mxgate!coyoacan!hanse!jcampbell From: jcampbell@hanse.de (Ji-woo Campbell) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep10.085409.3393@hanse.de> Date: Sun, 10 Sep 1995 08:54:09 GMT References: <1995Sep06.031409.9598@tum.de> <1995Sep07.061809.1120@kth.se> <1995Sep09.071209.2454@uu.net> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Sep09.071209.2454@uu.net>, cwatanabe@uu.net (Callum Watanabe) writes: > Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. -- Ji-woo Campbell | jcampbell@hanse.de PGP Key fingerprint: 1C60 EDDC 87C5 9622 "Keep the channels open." From onilsson@hanse.de Sun Sep 10 10:14:09 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!hanse!onilsson From: onilsson@hanse.de (Olga Nilsson) Newsgroups: comp.sys.m68k Subject: Re: Data: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep10.101409.8071@hanse.de> Date: Sun, 10 Sep 1995 10:14:09 GMT References: <1995Sep06.031409.9598@tum.de> <1995Sep07.061809.1120@kth.se> <1995Sep09.071209.2454@uu.net> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Sep09.071209.2454@uu.net>, cwatanabe@uu.net (Callum Watanabe) writes: > Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Olga Nilsson Tape trading list upon request. SASE required for international mail.