From erodriguez@pipeline.com Sun Sep 17 12:04:09 1995 Path: ashpoly!cascade!bigsur!pipeline!erodriguez From: erodriguez@pipeline.com (Emi Rodríguez) Newsgroups: comp.sys.m68k Subject: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep17.120409.8604@pipeline.com> Date: Sun, 17 Sep 1995 12:04:09 GMT Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: WinVN 0.99.5 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? -- === Emi Rodríguez === Dept of Electrical Engineering, The Pipeline Internet Network "Hold for relay." From tschneider@purdue.edu Tue Sep 19 14:15:09 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!purdue!tschneider From: tschneider@purdue.edu (Tobias Schneider) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Sep19.141509.1388@purdue.edu> Date: Tue, 19 Sep 1995 14:15:09 GMT References: <1995Sep17.120409.8604@pipeline.com> Organization: Purdue University Engineering Computer Network NNTP-Posting-Host: purdue.edu X-Newsreader: WinVN 0.99.5 Lines: 10 In article <1995Sep17.120409.8604@pipeline.com>, erodriguez@pipeline.com (Emi Rodríguez) 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! PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Tobias Schneider "We don't sign stars. We build them." Atari Falcon 030 / TOS 4.04