From dpark@kth.se Sat Aug 12 08:21:08 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kth!dpark From: dpark@kth.se (Diego Park) Newsgroups: comp.sys.m68k Subject: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug12.082108.8972@kth.se> Date: Sat, 12 Aug 1995 08:21:08 GMT Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 11 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. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- Diego Park | dpark@kth.se PGP Key fingerprint: 5EA6 856B 49D1 3CB1 "Keep the channels open." From lsilva@clari.net Sat Aug 12 10:45:08 1995 Path: ashpoly!cascade!transat!eunet-fr!teletel!clari!lsilva From: lsilva@clari.net (Lars Silva) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug12.104508.3437@clari.net> Date: Sat, 12 Aug 1995 10:45:08 GMT References: <1995Aug12.082108.8972@kth.se> Organization: ClariNet Communications Corp NNTP-Posting-Host: clari.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Aug12.082108.8972@kth.se>, dpark@kth.se (Diego Park) 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. -- Lars Silva | lsilva@clari.net PGP Key fingerprint: 40F5 F0F6 3396 6599 "Keep the channels open." From rreyes@kth.se Sun Aug 13 21:35:08 1995 Path: ashpoly!cascade!bigsur!kth!rreyes From: rreyes@kth.se (Rodrigo Reyes) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug13.213508.3616@kth.se> Date: Sun, 13 Aug 1995 21:35:08 GMT References: <1995Aug12.082108.8972@kth.se> <1995Aug12.104508.3437@clari.net> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 10 In article <1995Aug12.104508.3437@clari.net>, lsilva@clari.net (Lars Silva) writes: > Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Rodrigo Reyes Tape trading list upon request. SASE required for international mail. From tmacdonald@kth.se Mon Aug 14 20:30:08 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!kth!tmacdonald From: tmacdonald@kth.se (Tobias MacDonald) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug14.203008.7168@kth.se> Date: Mon, 14 Aug 1995 20:30:08 GMT References: <1995Aug12.082108.8972@kth.se> <1995Aug12.104508.3437@clari.net> <1995Aug13.213508.3616@kth.se> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Aug13.213508.3616@kth.se>, rreyes@kth.se (Rodrigo Reyes) writes: > Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. -- Tobias MacDonald SupraFAXModem 28.8 @ 14,400 bps "The carrier frequency does not drift by accident."