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From: rubin@mead.UUCP (Daniel Rubin)
Newsgroups: comp.sys.mac.misc,comp.sys.amiga,comp.graphics
Subject: Graphics Questions....
Message-ID: <1211@meaddata.mead.UUCP>
Date: 23 Aug 90 19:47:54 GMT
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Organization: Mead Data Central, Dayton OH
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I have a couple of technical questions..

How does a computer generate the video representation of screen memory?

How does a computer update the memory that is used for the screen?

I was thinking and I got stuck when I thought about a 25Mhz (fast!)
processor.  It seems to me that a the most memory that this processor can
update at 60Hz or 60 times a second (which if I am not mistaken is
the speed that a television redraws its picture and monitors are even faster)
is only .417 Megabytes???

Is this correct - the most graphical data that you can malipulate is less
than 1/2 of a Meg at the normal speeds of a typical television when you
are using a 25Mhz processor dedicated to graphics?  Is there something that
I am missing - perhaps there is some sort of co-processor or something.
Anybody out there who knows something about microprocessors ect..  please
help me out..........

Thanks in Advance					- Dan Rubin