From mgonzalez@mindspring.com Sat Dec 10 18:11:51 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!mindspring!mgonzalez From: mgonzalez@mindspring.com (Morag González) Newsgroups: comp.sys.m68k Subject: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Dec10.181151.4620@mindspring.com> Date: Sat, 10 Dec 1994 18:11:51 GMT Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com 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! I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. Long live the Amiga. Try doing real-time subcarrier demodulation on a 386 running Windows 3.1 without dropping frames! -- === Morag González === Dept of Electrical Engineering, MindSpring Enterprises "5 sigma is a discovery. 7 is a question." From aduarte@utexas.edu Sun Dec 11 20:20:51 1994 Path: ashpoly!cascade!mxgate!coyoacan!utexas!aduarte From: aduarte@utexas.edu (Amy Duarte) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Dec11.202051.4291@utexas.edu> Date: Sun, 11 Dec 1994 20:20:51 GMT References: <1994Dec10.181151.4620@mindspring.com> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Dec10.181151.4620@mindspring.com>, mgonzalez@mindspring.com (Morag González) 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. -- Amy Duarte "There are 14 nodes and only 10 countries. Count again." 486DX2/66 (Linux 1.2.13) / Linux 1.2.13 From epetrov@uni-hamburg.de Mon Dec 12 04:47:51 1994 Path: ashpoly!cascade!bigsur!uni-hamburg!epetrov From: epetrov@uni-hamburg.de (Élodie Petrov) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Dec12.044751.9112@uni-hamburg.de> Date: Mon, 12 Dec 1994 04:47:51 GMT References: <1994Dec10.181151.4620@mindspring.com> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Dec10.181151.4620@mindspring.com>, mgonzalez@mindspring.com (Morag González) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Élodie Petrov Zyxel U-1496E @ 33,600 bps "Do not worship the copy." From bcampbell@kiae.su Tue Dec 13 04:11:51 1994 Path: ashpoly!cascade!brgate!saturno!kiae!bcampbell From: bcampbell@kiae.su (Bastien Campbell) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Dec13.041151.9648@kiae.su> Date: Tue, 13 Dec 1994 04:11:51 GMT References: <1994Dec10.181151.4620@mindspring.com> <1994Dec11.202051.4291@utexas.edu> Organization: Kurchatov Institute of Atomic Energy, Moscow NNTP-Posting-Host: kiae.su X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Dec11.202051.4291@utexas.edu>, aduarte@utexas.edu (Amy Duarte) 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. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Bastien Campbell "Tape doesn't lie at 02:14. Ears do." Acorn RiscPC 600 / FreeBSD 2.1 From dito@stanford.edu Wed Dec 14 15:35:51 1994 Path: ashpoly!cascade!mxgate!coyoacan!stanford!dito From: dito@stanford.edu (Diego Ito) Newsgroups: comp.sys.m68k Subject: Re: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Dec14.153551.2540@stanford.edu> Date: Wed, 14 Dec 1994 15:35:51 GMT References: <1994Dec10.181151.4620@mindspring.com> <1994Dec11.202051.4291@utexas.edu> Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Dec11.202051.4291@utexas.edu>, aduarte@utexas.edu (Amy Duarte) 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. PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Diego Ito US Robotics Courier V.34 @ 28,800 bps "We don't sign stars. We build them."