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<a href='https://github.com/akkartik/mu/blob/main/baremetal/ex1.subx'>https://github.com/akkartik/mu/blob/main/baremetal/ex1.subx</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># The simplest possible program: just an infinite loop.</span>
<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># All is well if your computer clears screen and hangs without restarting.</span>
<span id="L3" class="LineNr"> 3 </span><span class="subxComment"># On an emulator the window may get bigger to accomodate the higher-resolution</span>
<span id="L4" class="LineNr"> 4 </span><span class="subxComment"># graphics mode.</span>
<span id="L5" class="LineNr"> 5 </span><span class="subxComment">#</span>
<span id="L6" class="LineNr"> 6 </span><span class="subxComment"># To build a disk image:</span>
<span id="L7" class="LineNr"> 7 </span><span class="subxComment"># ./translate_subx_baremetal baremetal/ex2.subx # emits disk.img</span>
<span id="L8" class="LineNr"> 8 </span><span class="subxComment"># To run:</span>
<span id="L9" class="LineNr"> 9 </span><span class="subxComment"># qemu-system-i386 disk.img</span>
<span id="L10" class="LineNr">10 </span><span class="subxComment"># Or:</span>
<span id="L11" class="LineNr">11 </span><span class="subxComment"># bochs -f baremetal/boot.bochsrc # boot.bochsrc loads disk.img</span>
<span id="L12" class="LineNr">12 </span>
<span id="L13" class="LineNr">13 </span>== code
<span id="L14" class="LineNr">14 </span>
<span id="L15" class="LineNr">15 </span><span class="Constant">$loop</span>:
<span id="L16" class="LineNr">16 </span>e9/jump $loop/disp32
<span id="L17" class="LineNr">17 </span>
<span id="L18" class="LineNr">18 </span><span class="subxComment"># vim:ft=subx</span>
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