This is a first cut at a simple space invaders emulator. The goal is
to produce an emulator, disassembler and assembler for the 8080
processor.
Running 'load.factor' will load the CPU emulation routines and runs
some tests. Run 'gui.factor' to get the SDL based GUI code.
If you are in the space-invaders directory, and have the ROM as a file
'invaders.rom' in that same directory, the following starts the GUI:
"load.factor" run-file
"gui.factor" run-file
USE: cpu-8080
display
This will run the emulator in interpreted mode. To compile the Factor
code do the following:
"cpu-8080" words [ try-compile ] each
display
This will run much faster.
'Backspace' inserts a coin and '1' is the one player button. It
currently stops working at the point where it displays the invaders
and I'm working on fixing this.
If the ROM file you have is split into seperate files, you will need
to merge them into one 'invaders.rom' file. From Windows this is done
with:
copy /b invaders.h+invaders.g+invaders.f+invaders.e invaders.rom
Or Linux:
cat invaders.h invaders.g invaders.f invaders.e >invaders.rom
For more information, contact the author, Chris Double, at
chris.double@double.co.nz or from my weblog http://radio.weblogs.com/0102385
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