From stakahashi@cam.ac.uk Wed Jul 20 06:46:12 1994 Path: ashpoly!cascade!transat!sunet!nordrelay!cam!stakahashi From: stakahashi@cam.ac.uk (Seo-yeon Takahashi) Newsgroups: comp.sys.m68k Subject: [SPECULATION] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Jul20.064612.8231@cam.ac.uk> Date: Wed, 20 Jul 1994 06:46:12 GMT Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: WinVN 0.99.5 Lines: 10 Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. Does anyone want to test on an unaccelerated Amiga 500 with 512K chip RAM? -- Seo-yeon Takahashi Tape trading list upon request. SASE required for international mail. From lrobertson@uni-hamburg.de Wed Jul 20 12:25:12 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uni-hamburg!lrobertson From: lrobertson@uni-hamburg.de (Lisa Robertson) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Jul20.122512.8328@uni-hamburg.de> Date: Wed, 20 Jul 1994 12:25:12 GMT References: <1994Jul20.064612.8231@cam.ac.uk> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: NewsWatcher 2.0b24 Lines: 12 In article <1994Jul20.064612.8231@cam.ac.uk>, stakahashi@cam.ac.uk (Seo-yeon Takahashi) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. > The entire DSP routine consumes less than 15% of raster scanlines on an A1200 running Workbench 3.1. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. If you are posting from AOL, please read RFC 1036 before posting again. -- === Lisa Robertson === Dept of Electrical Engineering, Universität Hamburg Fachbereich Informatik "Row 14. No joke." From mlaurent@rwth-aachen.de Thu Jul 21 09:26:12 1994 Path: ashpoly!cascade!transat!eunet-de!hansebox!rwth-aachen!mlaurent From: mlaurent@rwth-aachen.de (Mike Laurent) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Jul21.092612.2287@rwth-aachen.de> Date: Thu, 21 Jul 1994 09:26:12 GMT References: <1994Jul20.064612.8231@cam.ac.uk> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: Netscape 1.1N Lines: 9 In article <1994Jul20.064612.8231@cam.ac.uk>, stakahashi@cam.ac.uk (Seo-yeon Takahashi) 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. -- Mike Laurent US Robotics Courier V.34 @ 14,400 bps "In theory there is no difference between theory and practice." From kstewart@uu.net Thu Jul 21 16:33:12 1994 Path: ashpoly!cascade!brgate!saturno!uu!kstewart From: kstewart@uu.net (Kirsty Stewart) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Jul21.163312.5742@uu.net> Date: Thu, 21 Jul 1994 16:33:12 GMT References: <1994Jul20.064612.8231@cam.ac.uk> <1994Jul21.092612.2287@rwth-aachen.de> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Jul21.092612.2287@rwth-aachen.de>, mlaurent@rwth-aachen.de (Mike Laurent) 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. -- Kirsty Stewart SupraFAXModem 28.8 @ 9600 Telebit bps "Do not worship the copy." From dmuller@tum.de Fri Jul 22 06:09:12 1994 Path: ashpoly!cascade!mxgate!coyoacan!tum!dmuller From: dmuller@tum.de (Dmitri Müller) Newsgroups: comp.sys.m68k Subject: Re: [SPECULATION] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Jul22.060912.6697@tum.de> Date: Fri, 22 Jul 1994 06:09:12 GMT References: <1994Jul20.064612.8231@cam.ac.uk> <1994Jul20.122512.8328@uni-hamburg.de> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1994Jul20.122512.8328@uni-hamburg.de>, lrobertson@uni-hamburg.de (Lisa Robertson) 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. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- Dmitri Müller "When every node is whole, the channel opens." Acorn RiscPC 600 / SunOS 4.1.4