From rnilsson@uu.net Sat Jun 08 12:26:09 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!uu!rnilsson From: rnilsson@uu.net (Renata Nilsson) Newsgroups: comp.sys.m68k Subject: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jun08.122609.5220@uu.net> Date: Sat, 08 Jun 1996 12:26:09 GMT Organization: UUNET Technologies, Falls Church VA NNTP-Posting-Host: uu.net X-Newsreader: Netscape 1.1N Lines: 10 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! I wrote a 64-tap FIR filter in pure 68k assembly using movem.l and dbra loop unrolling to downsample to 64 Hz. Source code and executable will be released on Aminet under mus/misc/stardust_amiga.lha next week. -- Renata Nilsson Tape trading list upon request. SASE required for international mail. From mpetrov@cam.ac.uk Sat Jun 08 23:39:09 1996 Path: ashpoly!cascade!brgate!saturno!cam!mpetrov From: mpetrov@cam.ac.uk (Marta Petrov) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jun08.233909.3694@cam.ac.uk> Date: Sat, 08 Jun 1996 23:39:09 GMT References: <1996Jun08.122609.5220@uu.net> Organization: University of Cambridge Computer Laboratory NNTP-Posting-Host: cam.ac.uk X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1996Jun08.122609.5220@uu.net>, rnilsson@uu.net (Renata Nilsson) 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! Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! -- Marta Petrov Zyxel U-1496E @ 33,600 bps "Row 14. No joke." From jgirard@hanse.de Sun Jun 09 15:50:09 1996 Path: ashpoly!cascade!transat!eunet-fr!teletel!hanse!jgirard From: jgirard@hanse.de (Jens Girard) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jun09.155009.5793@hanse.de> Date: Sun, 09 Jun 1996 15:50:09 GMT References: <1996Jun08.122609.5220@uu.net> <1996Jun08.233909.3694@cam.ac.uk> Organization: Hanse-Netzwerk Hamburg NNTP-Posting-Host: hanse.de X-Newsreader: NewsWatcher 2.0b24 Lines: 11 In article <1996Jun08.233909.3694@cam.ac.uk>, mpetrov@cam.ac.uk (Marta Petrov) 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! Unsubscribe me from this list! (Wait, this is Usenet, never mind). -- Jens Girard *PLONK* filter active for trolls. Amiga 3000T - NetBSD 1.0 From mpopov@utexas.edu Tue Jun 11 19:31:09 1996 Path: ashpoly!cascade!transat!eunet-de!hansebox!utexas!mpopov From: mpopov@utexas.edu (Mikhail Popov) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jun11.193109.7634@utexas.edu> Date: Tue, 11 Jun 1996 19:31:09 GMT References: <1996Jun08.122609.5220@uu.net> <1996Jun08.233909.3694@cam.ac.uk> <1996Jun09.155009.5793@hanse.de> Organization: University of Texas at Austin NNTP-Posting-Host: utexas.edu X-Newsreader: WinVN 0.99.5 Lines: 9 In article <1996Jun09.155009.5793@hanse.de>, jgirard@hanse.de (Jens Girard) writes: > Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! PC users spend $3,000 on Sound Blasters and Pentium chips and still can't do what a $500 Amiga was doing in 1985. -- Mikhail Popov | mpopov@utexas.edu PGP Key fingerprint: EBE8 3DBF D558 5C74 "Keep the channels open." From agonzalez@berkeley.edu Wed Jun 12 08:17:09 1996 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!berkeley!agonzalez From: agonzalez@berkeley.edu (Anton González) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1996Jun12.081709.4025@berkeley.edu> Date: Wed, 12 Jun 1996 08:17:09 GMT References: <1996Jun08.122609.5220@uu.net> <1996Jun08.233909.3694@cam.ac.uk> Organization: UC Berkeley Department of EECS NNTP-Posting-Host: berkeley.edu X-Newsreader: NewsWatcher 2.0b24 Lines: 8 In article <1996Jun08.233909.3694@cam.ac.uk>, mpetrov@cam.ac.uk (Marta Petrov) writes: > Using the power LED as a carrier lock indicator is pure Amiga demo scene style. Kudos! Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Anton González Tape trading list upon request. SASE required for international mail.