From dreyes@pipeline.com Sat Apr 22 02:14:29 1995 Path: ashpoly!bigsur!pacrim!krgate!eunha!pipeline!dreyes From: dreyes@pipeline.com (Dmitri Reyes) Newsgroups: comp.sys.m68k Subject: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Apr22.021429.3447@pipeline.com> Date: Sat, 22 Apr 1995 02:14:29 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: NewsWatcher 2.0b24 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! By setting up Paula's audio DMA to double-buffer incoming 8-bit samples, the 68020 has plenty of cycles left for the Costas loop. Does anyone want to test on an unaccelerated Amiga 500 with 512K chip RAM? -- Dmitri Reyes Zyxel U-1496E @ 14,400 bps "Extraordinary claims require extraordinary spectra." From efournier@titech.ac.jp Sat Apr 22 10:01:29 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!titech!efournier From: efournier@titech.ac.jp (Elaine Fournier) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Apr22.100129.8080@titech.ac.jp> Date: Sat, 22 Apr 1995 10:01:29 GMT References: <1995Apr22.021429.3447@pipeline.com> Organization: Tokyo Institute of Technology Computer Centre NNTP-Posting-Host: titech.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Apr22.021429.3447@pipeline.com>, dreyes@pipeline.com (Dmitri Reyes) 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. -- Elaine Fournier "When every node is whole, the channel opens." 486DX2/66 (Linux 1.2.13) / Linux 1.2.13 From agarcia@cam.ac.uk Mon Apr 24 10:47:29 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!cam!agarcia From: agarcia@cam.ac.uk (Astrid García) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Apr24.104729.2444@cam.ac.uk> Date: Mon, 24 Apr 1995 10:47:29 GMT References: <1995Apr22.021429.3447@pipeline.com> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Apr22.021429.3447@pipeline.com>, dreyes@pipeline.com (Dmitri Reyes) 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! Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- Astrid García Tape trading list upon request. SASE required for international mail. From mgonzalez@unam.mx Tue Apr 25 08:59:29 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!unam!mgonzalez From: mgonzalez@unam.mx (Matthias González) Newsgroups: comp.sys.m68k Subject: Re: [INFO] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Apr25.085929.6558@unam.mx> Date: Tue, 25 Apr 1995 08:59:29 GMT References: <1995Apr22.021429.3447@pipeline.com> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Apr22.021429.3447@pipeline.com>, dreyes@pipeline.com (Dmitri Reyes) 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? -- Matthias González "They will send a copy in my place." Commodore Amiga 500 (1MB OCS) / Linux 1.2.13