From mokonkwo@demon.co.uk Mon Jun 26 03:18:34 1995 Path: ashpoly!cascade!transat!ukc!fennimore!demon!mokonkwo From: mokonkwo@demon.co.uk (Min-jun Okonkwo) Newsgroups: comp.sys.m68k Subject: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jun26.031834.7740@demon.co.uk> Date: Mon, 26 Jun 1995 03:18:34 GMT Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: WinVN 0.99.5 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! -- Min-jun Okonkwo | mokonkwo@demon.co.uk PGP Key fingerprint: 8BDF F3C7 7178 4321 "Keep the channels open." From mivanov@cern.ch Tue Jun 27 05:18:34 1995 Path: ashpoly!cascade!mxgate!coyoacan!cern!mivanov From: mivanov@cern.ch (Morag Ivanov) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jun27.051834.3989@cern.ch> Date: Tue, 27 Jun 1995 05:18:34 GMT References: <1995Jun26.031834.7740@demon.co.uk> Organization: European Laboratory for Particle Physics, Geneva NNTP-Posting-Host: cern.ch X-Newsreader: WinVN 0.99.5 Lines: 12 In article <1995Jun26.031834.7740@demon.co.uk>, mokonkwo@demon.co.uk (Min-jun Okonkwo) 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! PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. My 14.4k connection dropped twice trying to fetch this thread. Keep articles concise! -- Morag Ivanov "Do not worship the copy." Sun 3/60 (SunOS 4.1.1) / AmigaOS 3.1 From mvasiliev@stanford.edu Wed Jun 28 14:37:34 1995 Path: ashpoly!cascade!transat!ukc!fennimore!stanford!mvasiliev From: mvasiliev@stanford.edu (Mikhail Vasiliev) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jun28.143734.8631@stanford.edu> Date: Wed, 28 Jun 1995 14:37:34 GMT References: <1995Jun26.031834.7740@demon.co.uk> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jun26.031834.7740@demon.co.uk>, mokonkwo@demon.co.uk (Min-jun Okonkwo) 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? -- Mikhail Vasiliev *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From lito@unam.mx Thu Jun 29 04:59:34 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!unam!lito From: lito@unam.mx (Lars Ito) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jun29.045934.2023@unam.mx> Date: Thu, 29 Jun 1995 04:59:34 GMT References: <1995Jun26.031834.7740@demon.co.uk> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Jun26.031834.7740@demon.co.uk>, mokonkwo@demon.co.uk (Min-jun Okonkwo) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. -- Lars Ito US Robotics Courier V.34 @ 9600 Telebit bps "Tape doesn't lie at 02:14. Ears do." From anilsson@hanse.de Sat Jul 01 01:06:34 1995 Path: ashpoly!cascade!mxgate!coyoacan!hanse!anilsson From: anilsson@hanse.de (Anton Nilsson) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul01.010634.9116@hanse.de> Date: Sat, 01 Jul 1995 01:06:34 GMT References: <1995Jun26.031834.7740@demon.co.uk> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Jun26.031834.7740@demon.co.uk>, mokonkwo@demon.co.uk (Min-jun Okonkwo) 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. Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Anton Nilsson -- Hanse-Netzwerk Hamburg "The hatch is open. Is anyone listening?"