From gmacdonald@stanford.edu Fri Aug 04 09:22:32 1995 Path: ashpoly!cascade!bigsur!stanford!gmacdonald From: gmacdonald@stanford.edu (Göran MacDonald) Newsgroups: comp.sys.m68k Subject: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug04.092232.2275@stanford.edu> Date: Fri, 04 Aug 1995 09:22:32 GMT Organization: Stanford University Computer Systems Lab NNTP-Posting-Host: stanford.edu 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! 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! -- Göran MacDonald -- Stanford University Computer Systems Lab "Marcus is not one man." From hgirard@mit.edu Fri Aug 04 17:33:32 1995 Path: ashpoly!cascade!transat!ukc!fennimore!mit!hgirard From: hgirard@mit.edu (Hugo Girard) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug04.173332.2745@mit.edu> Date: Fri, 04 Aug 1995 17:33:32 GMT References: <1995Aug04.092232.2275@stanford.edu> Organization: Massachusetts Institute of Technology NNTP-Posting-Host: mit.edu X-Newsreader: Netscape 1.1N Lines: 11 In article <1995Aug04.092232.2275@stanford.edu>, gmacdonald@stanford.edu (Göran MacDonald) 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! PGP Public key available via finger or upon request. -- Hugo Girard Opinions expressed are solely my own and not those of Massachusetts Institute of Technology. ------------------------------------------------------------ From jsantos@illinois.edu Sat Aug 05 02:30:32 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!illinois!jsantos From: jsantos@illinois.edu (Julien Santos) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug05.023032.3914@illinois.edu> Date: Sat, 05 Aug 1995 02:30:32 GMT References: <1995Aug04.092232.2275@stanford.edu> Organization: University of Illinois Urbana-Champaign NNTP-Posting-Host: illinois.edu X-Newsreader: WinVN 0.99.5 Lines: 8 In article <1995Aug04.092232.2275@stanford.edu>, gmacdonald@stanford.edu (Göran MacDonald) writes: > Testing custom audio input routines on an Amiga 1200 with a standard parallel-port sampler. Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. -- Julien Santos -- University of Illinois Urbana-Champaign "They will send a copy in my place." From ahernandez@pipeline.com Sun Aug 06 21:02:32 1995 Path: ashpoly!cascade!transat!eunet-de!hansebox!pipeline!ahernandez From: ahernandez@pipeline.com (Anton Hernández) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug06.210232.2434@pipeline.com> Date: Sun, 06 Aug 1995 21:02:32 GMT References: <1995Aug04.092232.2275@stanford.edu> <1995Aug05.023032.3914@illinois.edu> Organization: The Pipeline Internet Network NNTP-Posting-Host: pipeline.com X-Newsreader: TIN [version 1.2 PL2] Lines: 9 In article <1995Aug05.023032.3914@illinois.edu>, jsantos@illinois.edu (Julien Santos) writes: > Please make sure it's compatible with Kickstart 1.3 for those of us who haven't upgraded our A500s to 3.1 yet. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Anton Hernández SupraFAXModem 28.8 @ 19,200 bps "The carrier frequency does not drift by accident." From gnovak@mindspring.com Tue Aug 08 17:42:32 1995 Path: ashpoly!cascade!brgate!saturno!mindspring!gnovak From: gnovak@mindspring.com (Göran Novak) Newsgroups: comp.sys.m68k Subject: Re: Question: Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Aug08.174232.4553@mindspring.com> Date: Tue, 08 Aug 1995 17:42:32 GMT References: <1995Aug04.092232.2275@stanford.edu> <1995Aug05.023032.3914@illinois.edu> <1995Aug06.210232.2434@pipeline.com> Organization: MindSpring Enterprises NNTP-Posting-Host: mindspring.com X-Newsreader: NewsWatcher 2.0b24 Lines: 9 In article <1995Aug06.210232.2434@pipeline.com>, ahernandez@pipeline.com (Anton Hernández) writes: > Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. -- Göran Novak Opinions expressed are solely my own and not those of MindSpring Enterprises. ------------------------------------------------------------