Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!decwrl!mcnc!borg!handel!mueller From: mueller@handel.cs.unc.edu (Carl Mueller) Newsgroups: comp.sys.amiga.graphics Subject: Re: Nec 4D (was Re: ) Message-ID: <2574@borg.cs.unc.edu> Date: 25 Mar 91 18:07:29 GMT References: <1991Mar20.051030.23170@bingvaxu.cc.binghamton.edu> <12299@pasteur.Berkeley.EDU> <1991Mar25.010042.18142@uokmax.ecn.uoknor.edu> Sender: news@cs.unc.edu Organization: University of North Carolina, Chapel Hill Lines: 38 In article <1991Mar25.010042.18142@uokmax.ecn.uoknor.edu> drtiller@uokmax.ecn.uoknor.edu (Donald Richard Tillery Jr) writes: >Is the NEC 4D not a true multi-sync monitor? The NEC 3D has no problem with >normal NTSC signal, why does the 4D not have this capability. If it doesn't, >you might be hard pressed getting the Lowell board to work with it (the >preliminary info I've seen indicates that board outputs the same frequency >signal as the standard Amiga - as does the Firecracker and the ColorBurst >boards - the Harlequin has a non-interlaced mode). The term "multi-sync" unfortunately has no well-defined meaning as far as what scan rates the monitor supports. All it means is that the monitor supports more than a single scan rate. The 3D supports ~15-36? khz, while the 4D supports something on the order of 25?-60?? khz (sorry, don't have the figures handy). So the 4D doesn't support NTSC (15 khz) rates (right?). From what I've heard about the A2410 Lowell board, it's horizontal freq. output is programmable, and can definitely go into the range supported by the NEC 4D. What I'd like to know is the exact range that can be generated by the board: can it go up to 60 khz for a 1000 line display? The A2410 sounds like a very exciting product. Unfortunately, it also sounds like a very expensive one (as far as hobbyists are concerned, anyhow; it'll probably be fairly cheap from the professional's point of view). A couple of questions for the net: I'm interested in the A2024 monitor. I've heard that in addition to its hires display of 1008x800, it can also act as a regular (grayscale) monitor for the other (standard) video modes. Is this true? And is this monitor available yet, or is a date set? What do users of it think about the refresh rate in hires? How does text scrolling look? Also, what 15-31 (or greater) multiscan monitors definitely support interlaced video well? I tried out a Packard-Bell (Samsung) monitor but it displayed the odd and even fields on top of each other with space between them. What experiences do others out there have? -Carl (mueller@cs.unc.edu)