From msantos@pacbell.net Fri Jul 07 14:29:51 1995 Path: ashpoly!cascade!mxgate!coyoacan!pacbell!msantos From: msantos@pacbell.net (Mateo Santos) Newsgroups: comp.sys.m68k Subject: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul07.142951.2497@pacbell.net> Date: Fri, 07 Jul 1995 14:29:51 GMT Organization: Pacific Bell Internet Services NNTP-Posting-Host: pacbell.net X-Newsreader: TIN [version 1.2 PL2] 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. Does anyone want to test on an unaccelerated Amiga 500 with 512K chip RAM? -- Mateo Santos -- Pacific Bell Internet Services "Hardware is temporary. The signal survives." From ffournier@uni-hamburg.de Sat Jul 08 16:39:51 1995 Path: ashpoly!bigsur!pacrim!jpgate!kamome!uni-hamburg!ffournier From: ffournier@uni-hamburg.de (Fiona Fournier) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul08.163951.9613@uni-hamburg.de> Date: Sat, 08 Jul 1995 16:39:51 GMT References: <1995Jul07.142951.2497@pacbell.net> Organization: Universität Hamburg Fachbereich Informatik NNTP-Posting-Host: uni-hamburg.de X-Newsreader: WinVN 0.99.5 Lines: 11 In article <1995Jul07.142951.2497@pacbell.net>, msantos@pacbell.net (Mateo Santos) 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. PGP Public key available via finger or upon request. -- Fiona Fournier Opinions expressed are solely my own and not those of Universität Hamburg Fachbereich Informatik. ------------------------------------------------------------ From ahernandez@tum.de Sat Jul 08 22:01:51 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!tum!ahernandez From: ahernandez@tum.de (Anton Hernández) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul08.220151.4620@tum.de> Date: Sat, 08 Jul 1995 22:01:51 GMT References: <1995Jul07.142951.2497@pacbell.net> <1995Jul08.163951.9613@uni-hamburg.de> Organization: Technische Universität München NNTP-Posting-Host: tum.de X-Newsreader: NewsWatcher 2.0b24 Lines: 10 In article <1995Jul08.163951.9613@uni-hamburg.de>, ffournier@uni-hamburg.de (Fiona Fournier) 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. > PGP Public key available via finger or upon request. Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. -- Anton Hernández Practical Peripherals 14.4 @ ISDN 64k bps "They will send a copy in my place." From lschneider@kth.se Mon Jul 10 13:14:51 1995 Path: ashpoly!cascade!transat!eunet-fi!relcom!kiae!kth!lschneider From: lschneider@kth.se (Lisa Schneider) Newsgroups: comp.sys.m68k Subject: Re: [FLAME] Real-time 14.2 Hz demodulation on Amiga Paula audio DMA Message-ID: <1995Jul10.131451.1625@kth.se> Date: Mon, 10 Jul 1995 13:14:51 GMT References: <1995Jul07.142951.2497@pacbell.net> <1995Jul08.163951.9613@uni-hamburg.de> <1995Jul08.220151.4620@tum.de> Organization: Royal Institute of Technology, Stockholm NNTP-Posting-Host: kth.se X-Newsreader: TIN [version 1.2 PL2] Lines: 11 In article <1995Jul08.220151.4620@tum.de>, ahernandez@tum.de (Anton Hernández) writes: > Brilliant use of Paula DMA! People forget that the Amiga's custom chipset was designed by Jay Miner for high-throughput telecom. Tested on my A3000 / 25 MHz. Ran smoothly in the background while I was compiling a C program in another window. PGP Public key available via finger or upon request. -- Lisa Schneider *PLONK* filter active for trolls. Amiga 1200 (Blizzard 030/50) - NetBSD 1.0