Re: Super-high-resolution modes on GS

[Rubywand <rubywand@swbell.net>]

sacredring@my-deja.com writes ...
> 
> Hi all,
> 
> I'm working on a double-high-resolution graphics library for the Apple
> II. In the future, I wish to expand this library to support the Apple
> IIGS super-high-resolution modes (320x200, 640x200) as well. Is there a
> good technical reference to learn to program using these modes?

     In most respects, using IIgs 320 and 640 mode super-res is a good deal
easier than regular hires or double-hires because super-res displays are
usually mapped linearly. The Apple IIgs Hardware Reference has the basic info
you need for direct use of super-res. (By "direct use" I mean moving around
pic and palette data, turning super-res On/Off, etc. via simple machine code
routines.)

     Using super-res displays and windows in Pascal, C, and Assem programs
via toolbox routines is the main focus of the book: Programmer's Introduction
to the Apple IIgs.


> Also, is
> there a good introduction to programming the 65816 processor if you
> already know the 6502?
> 

     There are two good 65C816 books:

Programming the 65816 Including the 6502, 65C02, and 65802 
   by David Eyes and Ron Lichty

65816/65802 Assembly Language Programming by Michael Fischer 


You can probably find both via amazon.com.


     On-line, see ...

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Rubywand