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| author | Kartik Agaram <vc@akkartik.com> | 2021-04-21 08:28:00 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2021-04-21 08:28:00 -0700 |
| commit | a8fb537a88fdbe77cdcbaa05ee28d1cad94550da (patch) | |
| tree | d0fad5f8da140435dcf05b631a4b3f315e0c1f86 /html/ex2.subx.html | |
| parent | d27994a9d73f970a7b54ec71f4ae457da3734daa (diff) | |
| download | mu-a8fb537a88fdbe77cdcbaa05ee28d1cad94550da.tar.gz | |
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Diffstat (limited to 'html/ex2.subx.html')
| -rw-r--r-- | html/ex2.subx.html | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/html/ex2.subx.html b/html/ex2.subx.html deleted file mode 100644 index 4083475c..00000000 --- a/html/ex2.subx.html +++ /dev/null @@ -1,91 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> -<html> -<head> -<meta http-equiv="content-type" content="text/html; charset=UTF-8"> -<title>Mu - ex2.subx</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="> -<meta name="colorscheme" content="minimal-light"> -<style type="text/css"> -<!-- -pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #c6c6c6; } -body { font-size:12pt; font-family: monospace; color: #000000; background-color: #c6c6c6; } -a { color:inherit; } -* { font-size:12pt; font-size: 1em; } -.subxComment { color: #005faf; } -.LineNr { } -.SpecialChar { color: #d70000; } -.Constant { color: #008787; } ---> -</style> - -<script type='text/javascript'> -<!-- - -/* function to open any folds containing a jumped-to line before jumping to it */ -function JumpToLine() -{ - var lineNum; - lineNum = window.location.hash; - lineNum = lineNum.substr(1); /* strip off '#' */ - - if (lineNum.indexOf('L') == -1) { - lineNum = 'L'+lineNum; - } - var lineElem = document.getElementById(lineNum); - /* Always jump to new location even if the line was hidden inside a fold, or - * we corrected the raw number to a line ID. - */ - if (lineElem) { - lineElem.scrollIntoView(true); - } - return true; -} -if ('onhashchange' in window) { - window.onhashchange = JumpToLine; -} - ---> -</script> -</head> -<body onload='JumpToLine();'> -<a href='https://github.com/akkartik/mu/blob/main/ex2.subx'>https://github.com/akkartik/mu/blob/main/ex2.subx</a> -<pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Test out the video mode by filling in the screen with pixels.</span> -<span id="L2" class="LineNr"> 2 </span><span class="subxComment">#</span> -<span id="L3" class="LineNr"> 3 </span><span class="subxComment"># To build a disk image:</span> -<span id="L4" class="LineNr"> 4 </span><span class="subxComment"># ./translate_subx boot.subx ex2.subx # emits disk.img</span> -<span id="L5" class="LineNr"> 5 </span><span class="subxComment"># To run:</span> -<span id="L6" class="LineNr"> 6 </span><span class="subxComment"># qemu-system-i386 disk.img</span> -<span id="L7" class="LineNr"> 7 </span><span class="subxComment"># Or:</span> -<span id="L8" class="LineNr"> 8 </span><span class="subxComment"># bochs -f bochsrc # bochsrc loads disk.img</span> -<span id="L9" class="LineNr"> 9 </span> -<span id="L10" class="LineNr">10 </span>== code -<span id="L11" class="LineNr">11 </span> -<span id="L12" class="LineNr">12 </span><span class="SpecialChar">Entry</span>: -<span id="L13" class="LineNr">13 </span> <span class="subxComment"># ecx <- start of video memory</span> -<span id="L14" class="LineNr">14 </span> 8b/-> *<span class="SpecialChar"><a href='boot.subx.html#L547'>Video-memory-addr</a></span> 1/r32/ecx -<span id="L15" class="LineNr">15 </span> -<span id="L16" class="LineNr">16 </span> <span class="subxComment"># eax <- final pixel of video memory</span> -<span id="L17" class="LineNr">17 </span> 8d/copy-address *(ecx + 0x0bffff) 0/r32/eax <span class="subxComment"># 0xbffff = 1024*768 - 1</span> -<span id="L18" class="LineNr">18 </span> -<span id="L19" class="LineNr">19 </span> <span class="subxComment"># for each pixel in video memory</span> -<span id="L20" class="LineNr">20 </span> { -<span id="L21" class="LineNr">21 </span> 39/compare %eax 1/r32/ecx -<span id="L22" class="LineNr">22 </span> 7c/jump-if-< <span class="Constant">break</span>/disp8 -<span id="L23" class="LineNr">23 </span> <span class="subxComment"># write its column number to it</span> -<span id="L24" class="LineNr">24 </span> 88/byte<- *eax 0/r32/AL -<span id="L25" class="LineNr">25 </span> 48/decrement-eax -<span id="L26" class="LineNr">26 </span> eb/jump <span class="Constant">loop</span>/disp8 -<span id="L27" class="LineNr">27 </span> } -<span id="L28" class="LineNr">28 </span> -<span id="L29" class="LineNr">29 </span> <span class="subxComment"># hang indefinitely</span> -<span id="L30" class="LineNr">30 </span> { -<span id="L31" class="LineNr">31 </span> eb/jump <span class="Constant">loop</span>/disp8 -<span id="L32" class="LineNr">32 </span> } -</pre> -</body> -</html> -<!-- vim: set foldmethod=manual : --> |