home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!know!cass.ma02.bull.com!mips2!news.bbn.com!usc!rpi!batcomputer!munnari.oz.au!bunyip.cc.uq.oz.au!news.qut.edu.au!qut.edu.au!barham
- From: barham@qut.edu.au
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: REALLY confused about monitors - for A1200
- Message-ID: <1992Nov19.094743.58855@qut.edu.au>
- Date: 19 Nov 92 14:47:42 GMT
- Organization: Queensland University of Technology
- Lines: 73
-
- hilton@leechs.lzo.dec.com (Greg Hilton) writes:
- > I hope someone can explain something about monitors to me.
- >
- > I'm considering buying a 1200, now I've heard it will work on SVGA
- > monitors, however as I understand it the 1200 has a number of
- > different modes:
- >
- > So according to my reviews the 1200 has the following modes:
- >
- > 1280 x 400
- > 1280 x 200
- > 800 x 600
- > 640 x 690
-
- (640x960 maybe?)
-
- > 640 x 480
-
- (not to mention 320 and 160 by 480 and 960 I think)
-
- > 640 x 400
- > 640 x 200
- > 320 x 400
- > 320 x 200
- >
- > All modes offer 256,000 colours from a palette of 16.7m.
- >
- > Would a SVGA monitor be able to DISPLAY all of these,
- > with/without flicker?
-
- An SVGA monitor that covers the appropriate frequency range would
- work with all of these modes. Super-hires, 800x600 (and maybe
- 640x960 at a guess) would be interlaced, everything else not if you
- have mode promotion on.
-
- > Would a multisync be able to DISPLAY all of these
- > with/without flicker?
-
- Ho does a multisync monitor differ from a SVGA monitor? Aren't SVGA
- monitors really multisync monitors? I thought they would have to be.
- Answer as above.
-
- > Would the 'standard' C= 1084 monitor work ok?
-
- Yep, but you wouldn't be able to get non-interlaced higher-res
- displays.
-
- > If anyone could explain what overscan and interlace means,
- > and what they would mean to a user, I would also be grateful.
-
- Interlace: To get higher resolution from a given bandwidth (forgive
- any inappropriate use of proprietry terms %^), the electron beam does
- the odd lines on its first sweep, then the even lines on the next
- sweep. This results in flicker because the refresh rate of any given
- pixel id halved.
-
- Overscan: TV's display their picture beyond the visible edge of the
- screen. This area is called overscan. The Amiga lets you use the
- overscan area, which may be visible on your monitor, to get more
- pixels on the screen. You can adjust the amount of overscan used so
- that your screens go right to the very edge of the vidible portion of
- the monitor.
-
- Tim.
- --
-
- ----------------------------------------------------------------------
- | t.barham@qut.edu.au (Tim Barham) - SUPER PLEB! |
- | Applications Programmer for the Computer Based Education Section, |
- | Queensland University of Technology, Brisbane, Qld, Australia |
- ----------------------------------------------------------------------
- | "You're so open-minded that your brain leaked out..." |
- ----------------------------------------------------------------------
-