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< title > Mu - ex7.mu< / title >
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< a href = 'https://github.com/akkartik/mu/blob/main/ex7.mu' > https://github.com/akkartik/mu/blob/main/ex7.mu< / a >
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< pre id = 'vimCodeElement' >
< span id = "L1" class = "LineNr" > 1 < / span > < span class = "muComment" > # Cursor-based motions.< / span >
< span id = "L2" class = "LineNr" > 2 < / span > < span class = "muComment" > #< / span >
< span id = "L3" class = "LineNr" > 3 < / span > < span class = "muComment" > # To build a disk image:< / span >
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< span id = "L4" class = "LineNr" > 4 < / span > < span class = "muComment" > # ./translate ex7.mu # emits code.img< / span >
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< span id = "L5" class = "LineNr" > 5 < / span > < span class = "muComment" > # To run:< / span >
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< span id = "L6" class = "LineNr" > 6 < / span > < span class = "muComment" > # qemu-system-i386 code.img< / span >
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< span id = "L7" class = "LineNr" > 7 < / span > < span class = "muComment" > # Or:< / span >
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< span id = "L8" class = "LineNr" > 8 < / span > < span class = "muComment" > # bochs -f bochsrc # bochsrc loads code.img< / span >
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< span id = "L9" class = "LineNr" > 9 < / span > < span class = "muComment" > #< / span >
< span id = "L10" class = "LineNr" > 10 < / span > < span class = "muComment" > # Expected output: an interactive game a bit like " snakes" . Try pressing h, j,< / span >
< span id = "L11" class = "LineNr" > 11 < / span > < span class = "muComment" > # k, l.< / span >
< span id = "L12" class = "LineNr" > 12 < / span >
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< span id = "L13" class = "LineNr" > 13 < / span > < span class = "PreProc" > fn< / span > < span class = "muFunction" > < a href = 'ex7.mu.html#L13' > main< / a > < / span > < a href = '500fake-screen.mu.html#L14' > screen< / a > : (addr < a href = '500fake-screen.mu.html#L14' > screen< / a > ), keyboard: (addr keyboard), data-disk: (addr disk) < span class = "Delimiter" > {< / span >
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< span id = "L14" class = "LineNr" > 14 < / span > < span class = "PreProc" > var< / span > space/< span class = "muRegEax" > eax< / span > : grapheme < span class = "Special" > < -< / span > copy < span class = "Constant" > 0x20< / span >
< span id = "L15" class = "LineNr" > 15 < / span > < a href = '500fake-screen.mu.html#L190' > set-cursor-position< / a > < a href = '500fake-screen.mu.html#L14' > screen< / a > , < span class = "Constant" > 0< / span > , < span class = "Constant" > 0< / span >
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< span id = "L16" class = "LineNr" > 16 < / span > < span class = "Delimiter" > {< / span >
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< span id = "L17" class = "LineNr" > 17 < / span > < a href = '500fake-screen.mu.html#L237' > draw-cursor< / a > < a href = '500fake-screen.mu.html#L14' > screen< / a > , space
< span id = "L18" class = "LineNr" > 18 < / span > < span class = "PreProc" > var< / span > key/< span class = "muRegEax" > eax< / span > : byte < span class = "Special" > < -< / span > < a href = '102keyboard.subx.html#L21' > read-key< / a > keyboard
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< span id = "L19" class = "LineNr" > 19 < / span > < span class = "Delimiter" > {< / span >
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< span id = "L20" class = "LineNr" > 20 < / span > compare key, < span class = "Constant" > 0x68< / span > /h
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< span id = "L21" class = "LineNr" > 21 < / span > < span class = "PreProc" > break-if-!=< / span >
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< span id = "L22" class = "LineNr" > 22 < / span > < a href = '501draw-text.mu.html#L92' > draw-code-point-at-cursor< / a > < a href = '500fake-screen.mu.html#L14' > screen< / a > , < span class = "Constant" > 0x2d< / span > /dash, < span class = "Constant" > 0x31< / span > /fg, < span class = "Constant" > 0< / span > /bg
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< span id = "L23" class = "LineNr" > 23 < / span > < a href = '501draw-text.mu.html#L3' > move-cursor-left< / a > < span class = "Constant" > 0< / span >
< span id = "L24" class = "LineNr" > 24 < / span > < span class = "Delimiter" > }< / span >
< span id = "L25" class = "LineNr" > 25 < / span > < span class = "Delimiter" > {< / span >
< span id = "L26" class = "LineNr" > 26 < / span > compare key, < span class = "Constant" > 0x6a< / span > /j
< span id = "L27" class = "LineNr" > 27 < / span > < span class = "PreProc" > break-if-!=< / span >
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< span id = "L28" class = "LineNr" > 28 < / span > < a href = '501draw-text.mu.html#L92' > draw-code-point-at-cursor< / a > < a href = '500fake-screen.mu.html#L14' > screen< / a > , < span class = "Constant" > 0x7c< / span > /vertical-bar, < span class = "Constant" > 0x31< / span > /fg, < span class = "Constant" > 0< / span > /bg
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< span id = "L29" class = "LineNr" > 29 < / span > < a href = '501draw-text.mu.html#L47' > move-cursor-down< / a > < span class = "Constant" > 0< / span >
< span id = "L30" class = "LineNr" > 30 < / span > < span class = "Delimiter" > }< / span >
< span id = "L31" class = "LineNr" > 31 < / span > < span class = "Delimiter" > {< / span >
< span id = "L32" class = "LineNr" > 32 < / span > compare key, < span class = "Constant" > 0x6b< / span > /k
< span id = "L33" class = "LineNr" > 33 < / span > < span class = "PreProc" > break-if-!=< / span >
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< span id = "L34" class = "LineNr" > 34 < / span > < a href = '501draw-text.mu.html#L92' > draw-code-point-at-cursor< / a > < a href = '500fake-screen.mu.html#L14' > screen< / a > , < span class = "Constant" > 0x7c< / span > /vertical-bar, < span class = "Constant" > 0x31< / span > /fg, < span class = "Constant" > 0< / span > /bg
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< span id = "L35" class = "LineNr" > 35 < / span > < a href = '501draw-text.mu.html#L34' > move-cursor-up< / a > < span class = "Constant" > 0< / span >
< span id = "L36" class = "LineNr" > 36 < / span > < span class = "Delimiter" > }< / span >
< span id = "L37" class = "LineNr" > 37 < / span > < span class = "Delimiter" > {< / span >
< span id = "L38" class = "LineNr" > 38 < / span > compare key, < span class = "Constant" > 0x6c< / span > /l
< span id = "L39" class = "LineNr" > 39 < / span > < span class = "PreProc" > break-if-!=< / span >
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< span id = "L40" class = "LineNr" > 40 < / span > < span class = "PreProc" > var< / span > g/< span class = "muRegEax" > eax< / span > : code-point < span class = "Special" > < -< / span > copy < span class = "Constant" > 0x2d< / span > /dash
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< span id = "L41" class = "LineNr" > 41 < / span > < a href = '501draw-text.mu.html#L92' > draw-code-point-at-cursor< / a > < a href = '500fake-screen.mu.html#L14' > screen< / a > , < span class = "Constant" > 0x2d< / span > /dash, < span class = "Constant" > 0x31< / span > /fg, < span class = "Constant" > 0< / span > /bg
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< span id = "L42" class = "LineNr" > 42 < / span > < a href = '501draw-text.mu.html#L16' > move-cursor-right< / a > < span class = "Constant" > 0< / span >
< span id = "L43" class = "LineNr" > 43 < / span > < span class = "Delimiter" > }< / span >
< span id = "L44" class = "LineNr" > 44 < / span > < span class = "PreProc" > loop< / span >
< span id = "L45" class = "LineNr" > 45 < / span > < span class = "Delimiter" > }< / span >
< span id = "L46" class = "LineNr" > 46 < / span > < span class = "Delimiter" > }< / span >
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