Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!think.com!spool.mu.edu!uwm.edu!lll-winken!taco!hobbes.catt.ncsu.edu!kdarling From: kdarling@hobbes.catt.ncsu.edu (Kevin Darling) Newsgroups: comp.sys.amiga.multimedia Subject: Re: DCTV digitized frames Message-ID: <1991Jun13.064020.17262@ncsu.edu> Date: 13 Jun 91 06:40:20 GMT Article-I.D.: ncsu.1991Jun13.064020.17262 References: <1991Jun12.072225.5845@ncsu.edu> Sender: news@ncsu.edu (USENET News System) Organization: North Carolina State University Lines: 24 moonhawk@bluemoon.uucp (David Culberson) writes: > > This isn't really refuting what you said, it's true, but I read >that the CDTV's CD-ROM drive has burst modes of up to FIVE megs a second! >Is this true? If so, you could have like a 3 or so second anim for >something like a text adventure or something for each place you went, in >full 24 bit color, with the DCTV outpput module. It would be AWESOME! If >this is not true, don't tell me. Just kidding, tell me no matter what... I've also seen a CDTV drive spec which has "2 megabytes (burst)" on it. But as cdrom drives always read back at 75 sectors/sec (sectors approx 2K), then the only thing I can think of for such an number to mean, could be how fast two adjacent bytes might be available for a DMA read, at times. In other words, no, I can't believe in a 5MB/sec rate sustained for more than a few microseconds (unless the drive has a cache, and that's likely to be too tiny to be of anim use). best - kev Sidenote: I thought the DCTV makers only claim 4 million colors, which is 22 bits. And a competitor's checking seems to show that the color changes are limited per line, and only apply to every other line (altho luminance changes can occur on every line). In any case, it's definitely not true "24-bit output". Probably better to just claim the total color range :-)