108 lines
6.2 KiB
HTML
108 lines
6.2 KiB
HTML
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<a href='https://github.com/akkartik/mu/blob/main/510disk.mu'>https://github.com/akkartik/mu/blob/main/510disk.mu</a>
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<pre id='vimCodeElement'>
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<span id="L1" class="LineNr"> 1 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='510disk.mu.html#L1'>load-sectors</a></span> disk: (addr disk), lba: int, n: int, out: (addr stream byte) <span class="Delimiter">{</span>
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<span id="L2" class="LineNr"> 2 </span> <span class="PreProc">var</span> curr-lba/<span class="muRegEbx">ebx</span>: int <span class="Special"><-</span> copy lba
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<span id="L3" class="LineNr"> 3 </span> <span class="PreProc">var</span> remaining/<span class="muRegEdx">edx</span>: int <span class="Special"><-</span> copy n
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<span id="L4" class="LineNr"> 4 </span> <span class="Delimiter">{</span>
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<span id="L5" class="LineNr"> 5 </span> compare remaining, <span class="Constant">0</span>
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<span id="L6" class="LineNr"> 6 </span> <span class="PreProc">break-if-<=</span>
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<span id="L7" class="LineNr"> 7 </span> <span class="muComment"># sectors = min(remaining, 0x100)</span>
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<span id="L8" class="LineNr"> 8 </span> <span class="PreProc">var</span> sectors/eax: int <span class="Special"><-</span> copy remaining
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<span id="L9" class="LineNr"> 9 </span> compare sectors, <span class="Constant">0x100</span>
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<span id="L10" class="LineNr">10 </span> <span class="Delimiter">{</span>
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<span id="L11" class="LineNr">11 </span> <span class="PreProc">break-if-<=</span>
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<span id="L12" class="LineNr">12 </span> sectors <span class="Special"><-</span> copy <span class="Constant">0x100</span>
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<span id="L13" class="LineNr">13 </span> <span class="Delimiter">}</span>
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<span id="L14" class="LineNr">14 </span> <span class="muComment">#</span>
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<span id="L15" class="LineNr">15 </span> <a href='boot.subx.html#L762'>read-ata-disk</a> disk, curr-lba, sectors, out
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<span id="L16" class="LineNr">16 </span> <span class="muComment">#</span>
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<span id="L17" class="LineNr">17 </span> remaining <span class="Special"><-</span> subtract sectors
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<span id="L18" class="LineNr">18 </span> curr-lba <span class="Special"><-</span> add sectors
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<span id="L19" class="LineNr">19 </span> <span class="PreProc">loop</span>
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<span id="L20" class="LineNr">20 </span> <span class="Delimiter">}</span>
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<span id="L21" class="LineNr">21 </span><span class="Delimiter">}</span>
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<span id="L22" class="LineNr">22 </span>
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<span id="L23" class="LineNr">23 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='510disk.mu.html#L23'>store-sectors</a></span> disk: (addr disk), lba: int, n: int, in: (addr stream byte) <span class="Delimiter">{</span>
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<span id="L24" class="LineNr">24 </span> <span class="PreProc">var</span> curr-lba/<span class="muRegEbx">ebx</span>: int <span class="Special"><-</span> copy lba
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<span id="L25" class="LineNr">25 </span> <span class="PreProc">var</span> remaining/<span class="muRegEdx">edx</span>: int <span class="Special"><-</span> copy n
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<span id="L26" class="LineNr">26 </span> <span class="Delimiter">{</span>
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<span id="L27" class="LineNr">27 </span> compare remaining, <span class="Constant">0</span>
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<span id="L28" class="LineNr">28 </span> <span class="PreProc">break-if-<=</span>
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<span id="L29" class="LineNr">29 </span> <span class="muComment"># sectors = min(remaining, 0x100)</span>
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<span id="L30" class="LineNr">30 </span> <span class="PreProc">var</span> sectors/eax: int <span class="Special"><-</span> copy remaining
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<span id="L31" class="LineNr">31 </span> compare sectors, <span class="Constant">0x100</span>
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<span id="L32" class="LineNr">32 </span> <span class="Delimiter">{</span>
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<span id="L33" class="LineNr">33 </span> <span class="PreProc">break-if-<=</span>
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<span id="L34" class="LineNr">34 </span> sectors <span class="Special"><-</span> copy <span class="Constant">0x100</span>
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<span id="L35" class="LineNr">35 </span> <span class="Delimiter">}</span>
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<span id="L36" class="LineNr">36 </span> <span class="muComment">#</span>
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<span id="L37" class="LineNr">37 </span> <a href='boot.subx.html#L831'>write-ata-disk</a> disk, curr-lba, sectors, in
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<span id="L38" class="LineNr">38 </span> <span class="muComment">#</span>
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<span id="L39" class="LineNr">39 </span> remaining <span class="Special"><-</span> subtract sectors
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<span id="L40" class="LineNr">40 </span> curr-lba <span class="Special"><-</span> add sectors
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<span id="L41" class="LineNr">41 </span> <span class="PreProc">loop</span>
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<span id="L42" class="LineNr">42 </span> <span class="Delimiter">}</span>
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<span id="L43" class="LineNr">43 </span><span class="Delimiter">}</span>
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</pre>
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