Re: [CAD_CAM_EDM_DRO] Imbedded computers

lol-
icons and widgets are not needed and 70 mhz refresh on
a 1024*768 screen with 16 bit color would be absurd on
turboCNC, for instance. i've got little tablet pc,
monochrome, VGA, 486 DX, that handles 75 ipm (shared)
with nooooo problem.
google penpc - check the first entry in the list...
of course it is not for windows!


--- Stephen Wille Padnos <spadnos@...> wrote:

> juan gelt wrote:
>
> >is it that you guys crave to run windows on this?
> >there are a couple real-time os that are nowhere
> near
> >so heavy on the graphics....
> >
> >
> It doesn't really matter. It's not the drawing
> that's the problem, it's
> the refresh.
>
> A 1024x768 screen with 16-bit color (High color, not
> True color),
> refreshed at 70 Hz takes 1024x768x2x70 or 110 MB/sec
> of memory bandwidth
> away from the CPU. That's before *any* changes are
> made to the screen,
> like drawing nice widgets, or updating a DRO
> display. In fact, that
> bandwidth would be used up with a black screen being
> displayed (at that
> resolution / refresh). Drawing is also a problem,
> of course, but
> refresh is always there.
>
> - Steve
>
>
>
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