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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<title>Mu - ex5.mu</title>
<meta name="Generator" content="Vim/8.1">
<meta name="plugin-version" content="vim8.1_v1">
<meta name="syntax" content="none">
<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
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a { color:inherit; }
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.muComment { color: #005faf; }
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<a href='https://github.com/akkartik/mu/blob/main/ex5.mu'>https://github.com/akkartik/mu/blob/main/ex5.mu</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="muComment"># Draw a single line of ASCII text using the built-in font (GNU unifont)</span>
<span id="L2" class="LineNr"> 2 </span><span class="muComment"># Also demonstrates bounds-checking _before_ drawing.</span>
<span id="L3" class="LineNr"> 3 </span><span class="muComment">#</span>
<span id="L4" class="LineNr"> 4 </span><span class="muComment"># To build a disk image:</span>
<span id="L5" class="LineNr"> 5 </span><span class="muComment">#   ./translate ex5.mu             # emits code.img</span>
<span id="L6" class="LineNr"> 6 </span><span class="muComment"># To run:</span>
<span id="L7" class="LineNr"> 7 </span><span class="muComment">#   qemu-system-i386 code.img</span>
<span id="L8" class="LineNr"> 8 </span><span class="muComment"># Or:</span>
<span id="L9" class="LineNr"> 9 </span><span class="muComment">#   bochs -f bochsrc               # bochsrc loads code.img</span>
<span id="L10" class="LineNr">10 </span><span class="muComment">#</span>
<span id="L11" class="LineNr">11 </span><span class="muComment"># Expected output: text in green near the top-left corner of screen</span>
<span id="L12" class="LineNr">12 </span>
<span id="L13" class="LineNr">13 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='ex5.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>
<span id="L14" class="LineNr">14 </span>  <span class="PreProc">var</span> dummy/eax: int <span class="Special">&lt;-</span> <a href='501draw-text.mu.html#L100'>draw-text-rightward</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">&quot;hello from baremetal Mu!&quot;</span>, <span class="Constant">0x10</span>/x, <span class="Constant">0x400</span>/xmax, <span class="Constant">0x10</span>/y, <span class="Constant">0xa</span>/fg, <span class="Constant">0</span>/bg
<span id="L15" class="LineNr">15 </span>  dummy <span class="Special">&lt;-</span> <a href='501draw-text.mu.html#L100'>draw-text-rightward</a> <a href='500fake-screen.mu.html#L14'>screen</a>, <span class="Constant">&quot;you shouldn't see this&quot;</span>, <span class="Constant">0x10</span>/x, <span class="Constant">0xa0</span>/xmax, <span class="Constant">0x30</span>/y, <span class="Constant">3</span>/fg, <span class="Constant">0</span>/bg  <span class="muComment"># xmax is too narrow</span>
<span id="L16" class="LineNr">16 </span><span class="Delimiter">}</span>
</pre>
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