From eoliveira@inria.fr Mon May 22 02:08:23 1995 Path: ashpoly!cascade!transat!ukc!fennimore!inria!eoliveira From: eoliveira@inria.fr (Elaine Oliveira) Newsgroups: comp.sys.m68k Subject: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995May22.020823.6867@inria.fr> Date: Mon, 22 May 1995 02:08:23 GMT Organization: INRIA Rocquencourt NNTP-Posting-Host: inria.fr 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? -- Elaine Oliveira Practical Peripherals 14.4 @ 19,200 bps "Measuring a record you own is listening, not piracy." From bivanov@unam.mx Mon May 22 08:07:23 1995 Path: ashpoly!cascade!mxgate!coyoacan!unam!bivanov From: bivanov@unam.mx (Brian Ivanov) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995May22.080723.3429@unam.mx> Date: Mon, 22 May 1995 08:07:23 GMT References: <1995May22.020823.6867@inria.fr> Organization: Universidad Nacional Autónoma de México (DGSCA) NNTP-Posting-Host: unam.mx X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995May22.020823.6867@inria.fr>, eoliveira@inria.fr (Elaine Oliveira) 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! Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. -- Brian Ivanov | bivanov@unam.mx PGP Key fingerprint: 5CDF 73C7 955D C57A "Keep the channels open." From llarsson@demon.co.uk Wed May 24 10:01:23 1995 Path: ashpoly!cascade!brgate!saturno!demon!llarsson From: llarsson@demon.co.uk (Lars Larsson) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995May24.100123.6512@demon.co.uk> Date: Wed, 24 May 1995 10:01:23 GMT References: <1995May22.020823.6867@inria.fr> <1995May22.080723.3429@unam.mx> Organization: Demon Internet Services UK NNTP-Posting-Host: demon.co.uk X-Newsreader: TIN [version 1.2 PL2] Lines: 8 In article <1995May22.080723.3429@unam.mx>, bivanov@unam.mx (Brian Ivanov) 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. -- Lars Larsson -- Demon Internet Services UK "In theory there is no difference between theory and practice." From jrodriguez@uu.net Wed May 24 15:04:23 1995 Path: ashpoly!cascade!mxgate!coyoacan!uu!jrodriguez From: jrodriguez@uu.net (Julien Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995May24.150423.8386@uu.net> Date: Wed, 24 May 1995 15:04:23 GMT References: <1995May22.020823.6867@inria.fr> <1995May22.080723.3429@unam.mx> <1995May24.100123.6512@demon.co.uk> Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995May24.100123.6512@demon.co.uk>, llarsson@demon.co.uk (Lars Larsson) writes: > PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? -- === Julien Rodríguez === Dept of Electrical Engineering, UUNET Technologies, Falls Church VA "In theory there is no difference between theory and practice." From vrodriguez@rwth-aachen.de Fri May 26 04:33:23 1995 Path: ashpoly!cascade!transat!sunet!nordrelay!rwth-aachen!vrodriguez From: vrodriguez@rwth-aachen.de (Valeria Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: WTB/WTT: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995May26.043323.2143@rwth-aachen.de> Date: Fri, 26 May 1995 04:33:23 GMT References: <1995May22.020823.6867@inria.fr> <1995May22.080723.3429@unam.mx> <1995May24.100123.6512@demon.co.uk> Organization: RWTH Aachen Informatik NNTP-Posting-Host: rwth-aachen.de X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995May24.100123.6512@demon.co.uk>, llarsson@demon.co.uk (Lars Larsson) writes: > PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. Download failed on Aminet mirror. Can someone mail me an ADF floppy disk image? Netscape 1.1 crashes when loading large preformatted text. Stick to rn or tin! -- Valeria Rodríguez *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0