Virtual GS-Apple IIGS Programming for Kids_rev b.pdf

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Virtual GS
APPLE IIGS PROGRAMMING FOR KIDS
Lim Thye Chean
iBooks Author
Chapter 1
Virtual GS
To bring back the fun and excitement of Apple IIGS
programming for all the young children!
iBooks Author
1
Welcome
Apple IIGS is one of the best computers Apple had ever
produced, and through emulation it works perfectly in all modern
machines. It is very simple to use and allow the young generation
to do graphics and animation programming easily.
Welcome to the world of Apple IIGS!
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iBooks Author
2
Apple IIGS
Apple IIGS arrived on 15th September 1986 and it is the final
computer in Apple II series. It is a 16 bit computer and has both
excellent graphics and music capabilities at that time.
You can now build up your own Apple IIGS using any Mac or PC.
All you need is just the emulator, an Apple IIGS ROM image
and a copy of System 6 operating system disk, and you will
be ready!
There are a few good Apple IIGS emulators:
• Mac OS X: Sweet16
• Mac OS 9: Bernie ][ The Rescue
• Windows/Linux: KEGS
Have fun!
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iBooks Author
3
Graphics Modes
The time is 1986, where the PC has EGA graphics and the Mac is
still in monochrome, Apple IIGS has excellent color palette of
4096 colors! Together, Apple IIGS, Amiga and Atari ST ruled the
multimedia world.
Apple IIGS has 2 graphic modes - 320 mode and 640 mode. 320
mode refers to the graphic resolution 320x200, with 16 colors per
line. 640 mode refers to the graphic resolution 640x200 (but we
won’t be covering 640 mode here). These resolutions look
primitive nowadays but they were amazing at that time.
The 16 colors in the color palette can be changed to any color at
anytime, allowing for some interesting effects like color cycling.
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iBooks Author

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