32 lines
642 B
Forth
32 lines
642 B
Forth
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# Test out the video mode by filling in the screen with pixels.
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#
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# To build a disk image:
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# ./translate_subx_baremetal baremetal/ex2.subx # emits disk.img
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# To run:
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# qemu-system-i386 disk.img
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# Or:
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# bochs -f baremetal/boot.bochsrc # boot.bochsrc loads disk.img
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#
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# Expected output:
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# html/baremetal.png
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fn main {
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var y/eax: int <- copy 0
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{
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compare y, 0x300 # 768
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break-if->=
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var color/ecx: int <- copy y
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color <- and 0xff
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var x/edx: int <- copy 0
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{
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compare x, 0x400 # 1024
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break-if->=
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pixel 0, x, y, color
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x <- increment
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loop
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}
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y <- increment
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loop
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}
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}
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