Re: New Vector monitor project progress

James,

The refresh rate is totally dependant on how many objects need to be drawn on
the screen. During (many!) troubleshooting sessions with my Battlezone and Star
Wars, I was able to make comparisons against the display on the monitor and the
scope. You can definitely see a difference in the refresh rate between a simple
display (Battlezone high score list) and a more complex display (Star Wars
attract sequence). When Star Wars is showing the "disappearing text" you can
observe a slight "blinking" effect from the difficulty in displaying all of the
objects on the screen quickly enough.

However, there is no constant "refresh rate" that is characteristic of a rastor
display. A rastor display has a predictable scan sequence that doesn't vary no
matter what is happening to the objects being displayed. Depending on what is
being displayed, a vector monitor may update much faster than a rastor, or much
slower if quite a bit needs to be drawn.

    - Matt

James Nelson wrote:

> I'm a little concerned about the refresh rate:
> If I use a non-vector CRT, the phosphors may not glow long enough to make
> the picture tolerable to look at. Does anyone know the refresh rate of
> Tempest or Star Wars (and don't tell me there is no such thing because there
> is.) It may vary from screen to screen. If nobody knows, I'll break out
> the scope and find out myself.
>
> My guess is that it's somewhere around 30 - 60 Hz, but I need to know.
>
> -James
>
> ----- Original Message -----
> From: Zonn <zonn@zonn.com>
> To: <vectorlist@lists.cc.utexas.edu>
> Sent: Thursday, October 14, 1999 6:32 PM
> Subject: Re: New Vector monitor project progress
>
> > On Thu, 14 Oct 1999 18:16:13 -0400, you wrote:
> >
> > >It's looking like a good choice is a new 19" WG monitor K7000 series I
> think.
> > >The specs say standard horizontal resolution of 640 I think that's good
> enough.
> > >Do we need to mess with "medium resolution" monitors? I'm not familiar
> with them.
> >
> > Yes!! Medium resolution rules! And if you want the proper
> > replacement for your Star Wars, it'll have to be medium res.
> >
> > The only difference (as far as X/Y goes, since scan rate will be
> > meaningless at this point) is the pixel size of the CRT, whatever you
> > come up with for the low res, should work the same on med res.
> > monitors. You might want to start with low res for *experiments*
> > since I'm sure these are cheaper..
> >
> > -Zonn
> >
> >

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