Re: Apple II+ Display Question

[Jonathan Schattke <wizwom@ripco.com>]

Robin wrote:
> 
> I've recently acquired an Apple II+ and have a question about the
> display hardware.
> 
> I was under the impression that all Apple II+ computers had the
> "color killer" modification that was made since the second revision
> of the Apple II.  However, I am seeing the green and violet fringe
> around white text characters.
> 
> Am I wrong in assuming that the "color killer" has been implemented
> on all Apple II+ computers or is there a possibility that something
> may be wrong with my computer?

The color killer circuitry should kick in when you are in TEXT mode.
In graphics/text mixed modes, you will have the green/violet fringes.

If the color does not stop in text mode, it is because the mother board
is very early revision.  It can be patched - you should be able to
figure out where with the schematic (I don't have mine here with me).

Jonathan
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