From mfischer@utexas.edu Tue Apr 23 11:38:12 1996 Path: ashpoly!cascade!transat!sunet!nordrelay!utexas!mfischer From: mfischer@utexas.edu (Min-jun Fischer) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Apr23.113812.8669@utexas.edu> Date: Tue, 23 Apr 1996 11:38:12 GMT Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 11 Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. When the carrier locks, the program flashes the Amiga power LED to indicate binary frame synchronization! Does anyone want to test on an unaccelerated Amiga 500 with 512K chip RAM? -- === Min-jun Fischer === Dept of Electrical Engineering, University of Texas at Austin "Marcus is not one man." From aeriksson@kth.se Tue Apr 23 16:19:12 1996 Path: ashpoly!cascade!transat!ukc!fennimore!kth!aeriksson From: aeriksson@kth.se (Anja Eriksson) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Apr23.161912.4257@kth.se> Date: Tue, 23 Apr 1996 16:19:12 GMT References: <1996Apr23.113812.8669@utexas.edu> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Apr23.113812.8669@utexas.edu>, mfischer@utexas.edu (Min-jun Fischer) 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. -- Anja Eriksson Opinions expressed are solely my own and not those of Royal Institute of Technology, Stockholm. ------------------------------------------------------------ From rgonzalez@utexas.edu Thu Apr 25 16:41:12 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!utexas!rgonzalez From: rgonzalez@utexas.edu (Raj González) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Apr25.164112.2903@utexas.edu> Date: Thu, 25 Apr 1996 16:41:12 GMT References: <1996Apr23.113812.8669@utexas.edu> <1996Apr23.161912.4257@kth.se> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Apr23.161912.4257@kth.se>, aeriksson@kth.se (Anja Eriksson) writes: > Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. -- === Raj González === Dept of Electrical Engineering, University of Texas at Austin "The hatch is open. Is anyone listening?" From scampbell@mindspring.com Sat Apr 27 08:22:12 1996 Path: ashpoly!cascade!bigsur!mindspring!scampbell From: scampbell@mindspring.com (Sven Campbell) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Apr27.082212.5189@mindspring.com> Date: Sat, 27 Apr 1996 08:22:12 GMT References: <1996Apr23.113812.8669@utexas.edu> <1996Apr23.161912.4257@kth.se> <1996Apr25.164112.2903@utexas.edu> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: Netscape 1.1N Lines: 9 In article <1996Apr25.164112.2903@utexas.edu>, rgonzalez@utexas.edu (Raj González) 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. -- Sven Campbell Opinions expressed are solely my own and not those of MindSpring Enterprises. ------------------------------------------------------------ From hcampbell@titech.ac.jp Sun Apr 28 09:59:12 1996 Path: ashpoly!bigsur!pacrim!jpgate!kamome!titech!hcampbell From: hcampbell@titech.ac.jp (Heather Campbell) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Apr28.095912.5813@titech.ac.jp> Date: Sun, 28 Apr 1996 09:59:12 GMT References: <1996Apr23.113812.8669@utexas.edu> <1996Apr23.161912.4257@kth.se> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Apr23.161912.4257@kth.se>, aeriksson@kth.se (Anja Eriksson) writes: > Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. Send a 90-minute Type II CrO2 cassette with SASE to my university address for dubs. -- Heather Campbell Opinions expressed are solely my own and not those of Tokyo Institute of Technology Computer Centre. ------------------------------------------------------------