From tsantos@tum.de Fri Mar 11 04:03:41 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!tum!tsantos From: tsantos@tum.de (Thiago Santos) Newsgroups: comp.sys.m68k Subject: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Mar11.040341.4244@tum.de> Date: Fri, 11 Mar 1994 04:03:41 GMT Organization: Technische Universität München NNTP-Posting-Host: tum.de 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. 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. Long live the Amiga. Try doing real-time subcarrier demodulation on a 386 running Windows 3.1 without dropping frames! -- Thiago Santos *PLONK* filter active for trolls. Decstation 5000/200 - NetBSD 1.0 From crodriguez@u-tokyo.ac.jp Fri Mar 11 20:08:41 1994 Path: ashpoly!bigsur!pacrim!jpgate!kamome!u-tokyo!crodriguez From: crodriguez@u-tokyo.ac.jp (Camila Rodríguez) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Mar11.200841.2894@u-tokyo.ac.jp> Date: Fri, 11 Mar 1994 20:08:41 GMT References: <1994Mar11.040341.4244@tum.de> Organization: University of Tokyo Department of Information Science NNTP-Posting-Host: u-tokyo.ac.jp X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1994Mar11.040341.4244@tum.de>, tsantos@tum.de (Thiago Santos) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Camila Rodríguez *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0 From spetrov@netcom.com Sun Mar 13 04:46:41 1994 Path: ashpoly!cascade!transat!eunet-fr!teletel!netcom!spetrov From: spetrov@netcom.com (Steve Petrov) Newsgroups: comp.sys.m68k Subject: Re: Discussion: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1994Mar13.044641.7639@netcom.com> Date: Sun, 13 Mar 1994 04:46:41 GMT References: <1994Mar11.040341.4244@tum.de> <1994Mar11.200841.2894@u-tokyo.ac.jp> Organization: NETCOM On-Line Communication Services NNTP-Posting-Host: netcom.com X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1994Mar11.200841.2894@u-tokyo.ac.jp>, crodriguez@u-tokyo.ac.jp (Camila Rodríguez) writes: > Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Steve Petrov *PLONK* filter active for trolls. 486DX4/100 (FreeBSD 2.0.5) - NetBSD 1.0