Re: Apple IIe power questions

[Jonathan Schattke <wizwom@ripco.com>]

Phoenyx wrote:

> Which brings up the argument of how many colors can the Apple display
> in hi-res mode?

Well, technically, Hi-res can display all 16 colors of lo-res.

The video generator, however has to be severely tweaked to do this - but the
program WayOut had a 16-color hi-res demo at it's startup.

The standard colors (for the rev 1 Apple ][) are 
White
Black
Green
Purple
Orange
Blue

Half-pixels could be made on byte boundaries by changing the hi bit of the
adjacent bytes, allowing the display of
Dk Green
Dk Purple
Brown
Dk Blue

Setting a bit on after that allows
Lt Green
Pink
Yellow
Lt Blue

This only leaves grey off of the 15 lo-res colors.

Of course, this was severely limited by the need to have the pixel at a byte
boundary, allowing display only every 7 pixels.

DHR allowed the display of all these colors anywhere (with a very odd mapping
scheme).  In DHR I have displayed ~ 30 colors.


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