Re: Apple IIe power questions

[CUTblakeney@home.com (Jeff Blakeney)]

On 21 Jan 2000 08:06:34 GMT, supertimer@aol.com (Supertimer) wrote:

>Jeff, I thought the original question was about the resolution
>of the 80 column text screen.  The characters in the 80
>column text screen are made of dots.  What is the resolution
>of the matrix that the character generator paints the 80x24
>characters on?  Isn't it 560x192?  (tentatively ;-) but if I am
>wrong, I'll wipe off the smile)

I didn't interpret the question that way and even if I had, what would
be the point.  You can't use each pixel when in text mode, you can
only modify the 24 rows of 80 columns of text.  But yes, you are right
that each character on the text screen is a bit map pattern in a 7x8
block so 80x24 characters is 80*7x24*8 which is 560x192.  :-)

By the way, that brings up another nit pick.  :-)

Hi-res mode can actually display 560x192 in black and white but with
some limitations.  It has to do with the fact that plotting a white
dot only displays half a pixel.  HCOLOR=3 draws the dot of the left
half of the pixel and HCOLOR=7 draws the dot on the right half.  This
is a simplification of the method but it does exist.  :-)

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