43 lines
No EOL
549 B
NASM
43 lines
No EOL
549 B
NASM
;
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; Simple memory transform-and-copy program
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;
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_start:
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push 0xFFFF00
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cpget
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jmp @cls
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hwio [ci:1] ; refresh screen
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push 0x00FFFF
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cpget
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jmp @cls
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hwio [ci:1] ; refresh screen
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jmp @_start
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syscall
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cls:
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bpget
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spget
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bpset
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push 0
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cls_copy:
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dup
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cmp 1228800 ; 640*480*4 screen size
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[ex(z)=1] jmp @cls_stop
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get -2 ; Get color argument
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get 1 ; Get iterator
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[i0:arg] add 4096 ; Add screen buffer offset
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storei [ci:2] ; Write 32bit value
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; Increase counter
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[i0:arg] add 4
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jmp @cls_copy
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cls_stop:
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bpget
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spset
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bpset
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ret |