Re: Apple II Images

[dklugh@iwaynet.net]

On 1997-06-04 spec@vax2.concordia.ca(MitchellSpector) said:
   >In article Doug Browning (vgt507@freenet.mb.ca) writes...
   >>][GIF has trouble displaying non apple gifs.
   >What are "Apple GIFs"? GIF is not a platform specific format, but
   >a portable image format that holds an arbitrary resolution and
   >palette depth, but limited to 256 colors (8-bit). Perhaps you might
   >mean GIF images created on an Apple II?

256 colours/lumnas combinations per image.GIfs that contain multiple images
could have a seperate palette per image.
(like in animations)

   >>Colors and dimentions are often wrong.
   >Of course they are, and there is little or no way around it because
   >it is a hardware limitation. The two graphic formats you have
   >available are Hi-Res and Double-Hi-Res, with odd resolutions like
   >240x192 and 560x192. If you want to do color, your working with a

Since those are really 320x200 and 640x200 (with a narrow screen) you should be
able to view CGA pictures,though you'll have to scroll to see the whole image
or just decide what part of the picture to see.
(like viewing pictures on the Atari's 80x200x4096 mode)

   >fixed palette, color bleeding and pixel placement restrictions.
   >That brings you down to an awful 140x192 with either 6 or 16 (again,
   >fixed) colors.

Isn't there a way to interlace screens on the Apple?
On the Atari,a 16-shade and 16-colour screen are interlace (shown every 
1/30 seconds) to produce 80x200x256.(APAC mode)
And 80x200x4096 (16-level RGB) is done with interlacing a 16-shade red,blue and 
green screen,each being shown 20 times per second.(Colourview mode)
Of course you'd be limited to a APAC-type display since you only get two video 
memory buffers.

   >Basically your going to get a _very_ fuzzy and distorted image in
   >the end. If you stand several feet back from the screen and squint a
   >bit, you get a vage idea of what the GIF image is. You may get some
   >semi-acceptable results with B&W line-art or very simple color
   >cartoon drawings I suppose. The bottom line is, other than the
   >Apple IIgs, the Apple II is not really suitable for viewing
   >graphics from other machines (or at least those sold in the last 12
   >years or so).

Well,Atari always did have the colour advantage over everyone else.

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