17 lines
687 B
Forth
17 lines
687 B
Forth
# Draw a single line of ASCII text using the built-in font (GNU unifont)
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# Also demonstrates bounds-checking _before_ drawing.
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#
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# To build a disk image:
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# ./translate_mu_baremetal baremetal/ex5.mu # 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: text in green near the top-left corner of screen
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fn main {
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var dummy/eax: int <- draw-text-rightward 0, "hello from baremetal Mu!", 0x10, 0x400, 0x10, 0xa # xmax = end of screen, plenty of space
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dummy <- draw-text-rightward 0, "you shouldn't see this", 0x10, 0xa0, 0x30, 0x3 # xmax = 0xa0, which is too narrow
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}
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