html/apps/life.mu.html

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  63 <a href='https://github.com/akkartik/mu/blob/main/apps/life.mu'>https://github.com/akkartik/mu/blob/main/apps/life.mu</a>
  64 <pre id='vimCodeElement'>
  65 <span id="L1" class="LineNr">  1 </span><span class="muComment"># Conway's Game of Life</span>
  66 <span id="L2" class="LineNr">  2 </span><span class="muComment">#</span>
  67 <span id="L3" class="LineNr">  3 </span><span class="muComment"># To build:</span>
  68 <span id="L4" class="LineNr">  4 </span><span class="muComment">#   $ ./translate apps/life.mu</span>
  69 <span id="L5" class="LineNr">  5 </span><span class="muComment"># To run:</span>
  70 <span id="L6" class="LineNr">  6 </span><span class="muComment">#   $ qemu-system-i386 code.img</span>
  71 <span id="L7" class="LineNr">  7 </span>
  72 <span id="L8" class="LineNr">  8 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='life.mu.html#L8'>state</a></span> _grid: (addr array boolean), x: int, y: int<span class="PreProc"> -&gt; </span>_/eax: boolean <span class="Delimiter">{</span>
  73 <span id="L9" class="LineNr">  9 </span>  <span class="muComment"># clip at the edge</span>
  74 <span id="L10" class="LineNr"> 10 </span>  compare x, <span class="Constant">0</span>
  75 <span id="L11" class="LineNr"> 11 </span>  <span class="Delimiter">{</span>
  76 <span id="L12" class="LineNr"> 12 </span>    <span class="PreProc">break-if-&gt;=</span>
  77 <span id="L13" class="LineNr"> 13 </span>    <span class="PreProc">return</span> <span class="Constant">0</span>/false
  78 <span id="L14" class="LineNr"> 14 </span>  <span class="Delimiter">}</span>
  79 <span id="L15" class="LineNr"> 15 </span>  compare y, <span class="Constant">0</span>
  80 <span id="L16" class="LineNr"> 16 </span>  <span class="Delimiter">{</span>
  81 <span id="L17" class="LineNr"> 17 </span>    <span class="PreProc">break-if-&gt;=</span>
  82 <span id="L18" class="LineNr"> 18 </span>    <span class="PreProc">return</span> <span class="Constant">0</span>/false
  83 <span id="L19" class="LineNr"> 19 </span>  <span class="Delimiter">}</span>
  84 <span id="L20" class="LineNr"> 20 </span>  compare x, <span class="Constant">0x80</span>/width
  85 <span id="L21" class="LineNr"> 21 </span>  <span class="Delimiter">{</span>
  86 <span id="L22" class="LineNr"> 22 </span>    <span class="PreProc">break-if-&lt;</span>
  87 <span id="L23" class="LineNr"> 23 </span>    <span class="PreProc">return</span> <span class="Constant">0</span>/false
  88 <span id="L24" class="LineNr"> 24 </span>  <span class="Delimiter">}</span>
  89 <span id="L25" class="LineNr"> 25 </span>  compare y, <span class="Constant">0x60</span>/height
  90 <span id="L26" class="LineNr"> 26 </span>  <span class="Delimiter">{</span>
  91 <span id="L27" class="LineNr"> 27 </span>    <span class="PreProc">break-if-&lt;</span>
  92 <span id="L28" class="LineNr"> 28 </span>    <span class="PreProc">return</span> <span class="Constant">0</span>/false
  93 <span id="L29" class="LineNr"> 29 </span>  <span class="Delimiter">}</span>
  94 <span id="L30" class="LineNr"> 30 </span>  <span class="PreProc">var</span> idx/eax: int <span class="Special">&lt;-</span> copy y
  95 <span id="L31" class="LineNr"> 31 </span>  idx <span class="Special">&lt;-</span> shift-left <span class="Constant">7</span>/log2width
  96 <span id="L32" class="LineNr"> 32 </span>  idx <span class="Special">&lt;-</span> add x
  97 <span id="L33" class="LineNr"> 33 </span>  <span class="PreProc">var</span> grid/<span class="muRegEsi">esi</span>: (addr array boolean) <span class="Special">&lt;-</span> copy _grid
  98 <span id="L34" class="LineNr"> 34 </span>  <span class="PreProc">var</span> result/eax: (addr boolean) <span class="Special">&lt;-</span> index grid, idx
  99 <span id="L35" class="LineNr"> 35 </span>  <span class="PreProc">return</span> *result
 100 <span id="L36" class="LineNr"> 36 </span><span class="Delimiter">}</span>
 101 <span id="L37" class="LineNr"> 37 </span>
 102 <span id="L38" class="LineNr"> 38 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='life.mu.html#L38'>set-state</a></span> _grid: (addr array boolean), x: int, y: int, val: boolean <span class="Delimiter">{</span>
 103 <span id="L39" class="LineNr"> 39 </span>  <span class="muComment"># don't bother checking bounds</span>
 104 <span id="L40" class="LineNr"> 40 </span>  <span class="PreProc">var</span> idx/eax: int <span class="Special">&lt;-</span> copy y
 105 <span id="L41" class="LineNr"> 41 </span>  idx <span class="Special">&lt;-</span> shift-left <span class="Constant">7</span>/log2width
 106 <span id="L42" class="LineNr"> 42 </span>  idx <span class="Special">&lt;-</span> add x
 107 <span id="L43" class="LineNr"> 43 </span>  <span class="PreProc">var</span> grid/<span class="muRegEsi">esi</span>: (addr array boolean) <span class="Special">&lt;-</span> copy _grid
 108 <span id="L44" class="LineNr"> 44 </span>  <span class="PreProc">var</span> result/eax: (addr boolean) <span class="Special">&lt;-</span> index grid, idx
 109 <span id="L45" class="LineNr"> 45 </span>  <span class="PreProc">var</span> src/<span class="muRegEcx">ecx</span>: boolean <span class="Special">&lt;-</span> copy val
 110 <span id="L46" class="LineNr"> 46 </span>  copy-to *result, src
 111 <span id="L47" class="LineNr"> 47 </span><span class="Delimiter">}</span>
 112 <span id="L48" class="LineNr"> 48 </span>
 113 <span id="L49" class="LineNr"> 49 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='life.mu.html#L49'>num-live-neighbors</a></span> grid: (addr array boolean), x: int, y: int<span class="PreProc"> -&gt; </span>_/eax: int <span class="Delimiter">{</span>
 114 <span id="L50" class="LineNr"> 50 </span>  <span class="PreProc">var</span> result/<span class="muRegEdi">edi</span>: int <span class="Special">&lt;-</span> copy <span class="Constant">0</span>
 115 <span id="L51" class="LineNr"> 51 </span>  <span class="muComment"># row above: zig</span>
 116 <span id="L52" class="LineNr"> 52 </span>  decrement y
 117 <span id="L53" class="LineNr"> 53 </span>  decrement x
 118 <span id="L54" class="LineNr"> 54 </span>  <span class="PreProc">var</span> s/eax: boolean <span class="Special">&lt;-</span> <a href='life.mu.html#L8'>state</a> grid, x, y
 119 <span id="L55" class="LineNr"> 55 </span>  <span class="Delimiter">{</span>
 120 <span id="L56" class="LineNr"> 56 </span>    compare s, <span class="Constant">0</span>/false
 121 <span id="L57" class="LineNr"> 57 </span>    <span class="PreProc">break-if-=</span>
 122 <span id="L58" class="LineNr"> 58 </span>    result <span class="Special">&lt;-</span> increment
 123 <span id="L59" class="LineNr"> 59 </span>  <span class="Delimiter">}</span>
 124 <span id="L60" class="LineNr"> 60 </span>  increment x
 125 <span id="L61" class="LineNr"> 61 </span>  s <span class="Special">&lt;-</span> <a href='life.mu.html#L8'>state</a> grid, x, y
 126 <span id="L62" class="LineNr"> 62 </span>  <span class="Delimiter">{</span>
 127 <span id="L63" class="LineNr"> 63 </span>    compare s, <span class="Constant">0</span>/false
 128 <span id="L64" class="LineNr"> 64 </span>    <span class="PreProc">break-if-=</span>
 129 <span id="L65" class="LineNr"> 65 </span>    result <span class="Special">&lt;-</span> increment
 130 <span id="L66" class="LineNr"> 66 </span>  <span class="Delimiter">}</span>
 131 <span id="L67" class="LineNr"> 67 </span>  increment x
 132 <span id="L68" class="LineNr"> 68 </span>  s <span class="Special">&lt;-</span> <a href='life.mu.html#L8'>state</a> grid, x, y
 133 <span id="L69" class="LineNr"> 69 </span>  <span class="Delimiter">{</span>
 134 <span id="L70" class="LineNr"> 70 </span>    compare s, <span class="Constant">0</span>/false
 135 <span id="L71" class="LineNr"> 71 </span>    <span class="PreProc">break-if-=</span>
 136 <span id="L72" class="LineNr"> 72 </span>    result <span class="Special">&lt;-</span> increment
 137 <span id="L73" class="LineNr"> 73 </span>  <span class="Delimiter">}</span>
 138 <span id="L74" class="LineNr"> 74 </span>  <span class="muComment"># curr row: zag</span>
 139 <span id="L75" class="LineNr"> 75 </span>  increment y
 140 <span id="L76" class="LineNr"> 76 </span>  s <span class="Special">&lt;-</span> <a href='life.mu.html#L8'>state</a> grid, x, y
 141 <span id="L77" class="LineNr"> 77 </span>  <span class="Delimiter">{</span>
 142 <span id="L78" class="LineNr"> 78 </span>    compare s, <span class="Constant">0</span>/false
 143 <span id="L79" class="LineNr"> 79 </span>    <span class="PreProc">break-if-=</span>
 144 <span id="L80" class="LineNr"> 80 </span>    result <span class="Special">&lt;-</span> increment
 145 <span id="L81" class="LineNr"> 81 </span>  <span class="Delimiter">}</span>
 146 <span id="L82" class="LineNr"> 82 </span>  subtract-from x, <span class="Constant">2</span>
 147 <span id="L83" class="LineNr"> 83 </span>  s <span class="Special">&lt;-</span> <a href='life.mu.html#L8'>state</a> grid, x, y
 148 <span id="L84" class="LineNr"> 84 </span>  <span class="Delimiter">{</span>
 149 <span id="L85" class="LineNr"> 85 </span>    compare s, <span class="Constant">0</span>/false
 150 <span id="L86" class="LineNr"> 86 </span>    <span class="PreProc">break-if-=</span>
 151 <span id="L87" class="LineNr"> 87 </span>    result <span class="Special">&lt;-</span> increment
 152 <span id="L88" class="LineNr"> 88 </span>  <span class="Delimiter">}</span>
 153 <span id="L89" class="LineNr"> 89 </span>  <span class="muComment"># row below: zig</span>
 154 <span id="L90" class="LineNr"> 90 </span>  increment y
 155 <span id="L91" class="LineNr"> 91 </span>  s <span class="Special">&lt;-</span> <a href='life.mu.html#L8'>state</a> grid, x, y
 156 <span id="L92" class="LineNr"> 92 </span>  <span class="Delimiter">{</span>
 157 <span id="L93" class="LineNr"> 93 </span>    compare s, <span class="Constant">0</span>/false
 158 <span id="L94" class="LineNr"> 94 </span>    <span class="PreProc">break-if-=</span>
 159 <span id="L95" class="LineNr"> 95 </span>    result <span class="Special">&lt;-</span> increment
 160 <span id="L96" class="LineNr"> 96 </span>  <span class="Delimiter">}</span>
 161 <span id="L97" class="LineNr"> 97 </span>  increment x
 162 <span id="L98" class="LineNr"> 98 </span>  s <span class="Special">&lt;-</span> <a href='life.mu.html#L8'>state</a> grid, x, y
 163 <span id="L99" class="LineNr"> 99 </span>  <span class="Delimiter">{</span>
 164 <span id="L100" class="LineNr">100 </span>    compare s, <span class="Constant">0</span>/false
 165 <span id="L101" class="LineNr">101 </span>    <span class="PreProc">break-if-=</span>
 166 <span id="L102" class="LineNr">102 </span>    result <span class="Special">&lt;-</span> increment
 167 <span id="L103" class="LineNr">103 </span>  <span class="Delimiter">}</span>
 168 <span id="L104" class="LineNr">104 </span>  increment x
 169 <span id="L105" class="LineNr">105 </span>  s <span class="Special">&lt;-</span> <a href='life.mu.html#L8'>state</a> grid, x, y
 170 <span id="L106" class="LineNr">106 </span>  <span class="Delimiter">{</span>
 171 <span id="L107" class="LineNr">107 </span>    compare s, <span class="Constant">0</span>/false
 172 <span id="L108" class="LineNr">108 </span>    <span class="PreProc">break-if-=</span>
 173 <span id="L109" class="LineNr">109 </span>    result <span class="Special">&lt;-</span> increment
 174 <span id="L110" class="LineNr">110 </span>  <span class="Delimiter">}</span>
 175 <span id="L111" class="LineNr">111 </span>  <span class="PreProc">return</span> result
 176 <span id="L112" class="LineNr">112 </span><span class="Delimiter">}</span>
 177 <span id="L113" class="LineNr">113 </span>
 178 <span id="L114" class="LineNr">114 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='life.mu.html#L114'>step</a></span> old-grid: (addr array boolean), new-grid: (addr array boolean) <span class="Delimiter">{</span>
 179 <span id="L115" class="LineNr">115 </span>  <span class="PreProc">var</span> y/<span class="muRegEcx">ecx</span>: int <span class="Special">&lt;-</span> copy <span class="Constant">0</span>
 180 <span id="L116" class="LineNr">116 </span>  <span class="Delimiter">{</span>
 181 <span id="L117" class="LineNr">117 </span>    compare y, <span class="Constant">0x60</span>/height
 182 <span id="L118" class="LineNr">118 </span>    <span class="PreProc">break-if-&gt;=</span>
 183 <span id="L119" class="LineNr">119 </span>    <span class="PreProc">var</span> x/<span class="muRegEdx">edx</span>: int <span class="Special">&lt;-</span> copy <span class="Constant">0</span>
 184 <span id="L120" class="LineNr">120 </span>    <span class="Delimiter">{</span>
 185 <span id="L121" class="LineNr">121 </span>      compare x, <span class="Constant">0x80</span>/width
 186 <span id="L122" class="LineNr">122 </span>      <span class="PreProc">break-if-&gt;=</span>
 187 <span id="L123" class="LineNr">123 </span>      <span class="PreProc">var</span> n/eax: int <span class="Special">&lt;-</span> <a href='life.mu.html#L49'>num-live-neighbors</a> old-grid, x, y
 188 <span id="L124" class="LineNr">124 </span>      <span class="muComment"># if neighbors &lt; 2, die of loneliness</span>
 189 <span id="L125" class="LineNr">125 </span>      <span class="Delimiter">{</span>
 190 <span id="L126" class="LineNr">126 </span>        compare n, <span class="Constant">2</span>
 191 <span id="L127" class="LineNr">127 </span>        <span class="PreProc">break-if-&gt;=</span>
 192 <span id="L128" class="LineNr">128 </span>        <a href='life.mu.html#L38'>set-state</a> new-grid, x, y, <span class="Constant">0</span>/dead
 193 <span id="L129" class="LineNr">129 </span>      <span class="Delimiter">}</span>
 194 <span id="L130" class="LineNr">130 </span>      <span class="muComment"># if neighbors &gt; 3, die of overcrowding</span>
 195 <span id="L131" class="LineNr">131 </span>      <span class="Delimiter">{</span>
 196 <span id="L132" class="LineNr">132 </span>        compare n, <span class="Constant">3</span>
 197 <span id="L133" class="LineNr">133 </span>        <span class="PreProc">break-if-&lt;=</span>
 198 <span id="L134" class="LineNr">134 </span>        <a href='life.mu.html#L38'>set-state</a> new-grid, x, y, <span class="Constant">0</span>/dead
 199 <span id="L135" class="LineNr">135 </span>      <span class="Delimiter">}</span>
 200 <span id="L136" class="LineNr">136 </span>      <span class="muComment"># if neighbors = 2, preserve state</span>
 201 <span id="L137" class="LineNr">137 </span>      <span class="Delimiter">{</span>
 202 <span id="L138" class="LineNr">138 </span>        compare n, <span class="Constant">2</span>
 203 <span id="L139" class="LineNr">139 </span>        <span class="PreProc">break-if-!=</span>
 204 <span id="L140" class="LineNr">140 </span>        <span class="PreProc">var</span> old-state/eax: boolean <span class="Special">&lt;-</span> <a href='life.mu.html#L8'>state</a> old-grid, x, y
 205 <span id="L141" class="LineNr">141 </span>        <a href='life.mu.html#L38'>set-state</a> new-grid, x, y, old-state
 206 <span id="L142" class="LineNr">142 </span>      <span class="Delimiter">}</span>
 207 <span id="L143" class="LineNr">143 </span>      <span class="muComment"># if neighbors = 3, cell quickens to life</span>
 208 <span id="L144" class="LineNr">144 </span>      <span class="Delimiter">{</span>
 209 <span id="L145" class="LineNr">145 </span>        compare n, <span class="Constant">3</span>
 210 <span id="L146" class="LineNr">146 </span>        <span class="PreProc">break-if-!=</span>
 211 <span id="L147" class="LineNr">147 </span>        <a href='life.mu.html#L38'>set-state</a> new-grid, x, y, <span class="Constant">1</span>/live
 212 <span id="L148" class="LineNr">148 </span>      <span class="Delimiter">}</span>
 213 <span id="L149" class="LineNr">149 </span>      x <span class="Special">&lt;-</span> increment
 214 <span id="L150" class="LineNr">150 </span>      <span class="PreProc">loop</span>
 215 <span id="L151" class="LineNr">151 </span>    <span class="Delimiter">}</span>
 216 <span id="L152" class="LineNr">152 </span>    y <span class="Special">&lt;-</span> increment
 217 <span id="L153" class="LineNr">153 </span>    <span class="PreProc">loop</span>
 218 <span id="L154" class="LineNr">154 </span>  <span class="Delimiter">}</span>
 219 <span id="L155" class="LineNr">155 </span><span class="Delimiter">}</span>
 220 <span id="L156" class="LineNr">156 </span>
 221 <span id="L157" class="LineNr">157 </span><span class="muComment"># color a square of size 'side' starting at x*side, y*side</span>
 222 <span id="L158" class="LineNr">158 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='life.mu.html#L158'>render-square</a></span> _x: int, _y: int, color: int <span class="Delimiter">{</span>
 223 <span id="L159" class="LineNr">159 </span>  <span class="PreProc">var</span> y/<span class="muRegEdx">edx</span>: int <span class="Special">&lt;-</span> copy _y
 224 <span id="L160" class="LineNr">160 </span>  y <span class="Special">&lt;-</span> shift-left <span class="Constant">3</span>/log2side
 225 <span id="L161" class="LineNr">161 </span>  <span class="PreProc">var</span> side/<span class="muRegEbx">ebx</span>: int <span class="Special">&lt;-</span> copy <span class="Constant">1</span>
 226 <span id="L162" class="LineNr">162 </span>  side <span class="Special">&lt;-</span> shift-left <span class="Constant">3</span>/log2side
 227 <span id="L163" class="LineNr">163 </span>  <span class="PreProc">var</span> ymax/<span class="muRegEcx">ecx</span>: int <span class="Special">&lt;-</span> copy y
 228 <span id="L164" class="LineNr">164 </span>  ymax <span class="Special">&lt;-</span> add side
 229 <span id="L165" class="LineNr">165 </span>  <span class="Delimiter">{</span>
 230 <span id="L166" class="LineNr">166 </span>    compare y, ymax
 231 <span id="L167" class="LineNr">167 </span>    <span class="PreProc">break-if-&gt;=</span>
 232 <span id="L168" class="LineNr">168 </span>    <span class="Delimiter">{</span>
 233 <span id="L169" class="LineNr">169 </span>      <span class="PreProc">var</span> x/eax: int <span class="Special">&lt;-</span> copy _x
 234 <span id="L170" class="LineNr">170 </span>      x <span class="Special">&lt;-</span> shift-left <span class="Constant">3</span>/log2side
 235 <span id="L171" class="LineNr">171 </span>      <span class="PreProc">var</span> xmax/<span class="muRegEcx">ecx</span>: int <span class="Special">&lt;-</span> copy x
 236 <span id="L172" class="LineNr">172 </span>      xmax <span class="Special">&lt;-</span> add side
 237 <span id="L173" class="LineNr">173 </span>      <span class="Delimiter">{</span>
 238 <span id="L174" class="LineNr">174 </span>        compare x, xmax
 239 <span id="L175" class="LineNr">175 </span>        <span class="PreProc">break-if-&gt;=</span>
 240 <span id="L176" class="LineNr">176 </span>        <a href='../101screen.subx.html#L8'>pixel-on-real-screen</a> x, y, color
 241 <span id="L177" class="LineNr">177 </span>        x <span class="Special">&lt;-</span> increment
 242 <span id="L178" class="LineNr">178 </span>        <span class="PreProc">loop</span>
 243 <span id="L179" class="LineNr">179 </span>      <span class="Delimiter">}</span>
 244 <span id="L180" class="LineNr">180 </span>    <span class="Delimiter">}</span>
 245 <span id="L181" class="LineNr">181 </span>    y <span class="Special">&lt;-</span> increment
 246 <span id="L182" class="LineNr">182 </span>    <span class="PreProc">loop</span>
 247 <span id="L183" class="LineNr">183 </span>  <span class="Delimiter">}</span>
 248 <span id="L184" class="LineNr">184 </span><span class="Delimiter">}</span>
 249 <span id="L185" class="LineNr">185 </span>
 250 <span id="L186" class="LineNr">186 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='life.mu.html#L186'>render</a></span> grid: (addr array boolean) <span class="Delimiter">{</span>
 251 <span id="L187" class="LineNr">187 </span>  <span class="PreProc">var</span> y/<span class="muRegEcx">ecx</span>: int <span class="Special">&lt;-</span> copy <span class="Constant">0</span>
 252 <span id="L188" class="LineNr">188 </span>  <span class="Delimiter">{</span>
 253 <span id="L189" class="LineNr">189 </span>    compare y, <span class="Constant">0xc0</span>/height
 254 <span id="L190" class="LineNr">190 </span>    <span class="PreProc">break-if-&gt;=</span>
 255 <span id="L191" class="LineNr">191 </span>    <span class="PreProc">var</span> x/<span class="muRegEdx">edx</span>: int <span class="Special">&lt;-</span> copy <span class="Constant">0</span>
 256 <span id="L192" class="LineNr">192 </span>    <span class="Delimiter">{</span>
 257 <span id="L193" class="LineNr">193 </span>      compare x, <span class="Constant">0x100</span>/width
 258 <span id="L194" class="LineNr">194 </span>      <span class="PreProc">break-if-&gt;=</span>
 259 <span id="L195" class="LineNr">195 </span>      <span class="PreProc">var</span> <a href='life.mu.html#L8'>state</a>/eax: boolean <span class="Special">&lt;-</span> <a href='life.mu.html#L8'>state</a> grid, x, y
 260 <span id="L196" class="LineNr">196 </span>      compare <a href='life.mu.html#L8'>state</a>, <span class="Constant">0</span>/false
 261 <span id="L197" class="LineNr">197 </span>      <span class="Delimiter">{</span>
 262 <span id="L198" class="LineNr">198 </span>        <span class="PreProc">break-if-=</span>
 263 <span id="L199" class="LineNr">199 </span>        <a href='life.mu.html#L158'>render-square</a> x, y, <span class="Constant">0</span>/black
 264 <span id="L200" class="LineNr">200 </span>      <span class="Delimiter">}</span>
 265 <span id="L201" class="LineNr">201 </span>      compare <a href='life.mu.html#L8'>state</a>, <span class="Constant">0</span>/false
 266 <span id="L202" class="LineNr">202 </span>      <span class="Delimiter">{</span>
 267 <span id="L203" class="LineNr">203 </span>        <span class="PreProc">break-if-!=</span>
 268 <span id="L204" class="LineNr">204 </span>        <a href='life.mu.html#L158'>render-square</a> x, y, <span class="Constant">3</span>/cyan
 269 <span id="L205" class="LineNr">205 </span>      <span class="Delimiter">}</span>
 270 <span id="L206" class="LineNr">206 </span>      x <span class="Special">&lt;-</span> increment
 271 <span id="L207" class="LineNr">207 </span>      <span class="PreProc">loop</span>
 272 <span id="L208" class="LineNr">208 </span>    <span class="Delimiter">}</span>
 273 <span id="L209" class="LineNr">209 </span>    y <span class="Special">&lt;-</span> increment
 274 <span id="L210" class="LineNr">210 </span>    <span class="PreProc">loop</span>
 275 <span id="L211" class="LineNr">211 </span>  <span class="Delimiter">}</span>
 276 <span id="L212" class="LineNr">212 </span><span class="Delimiter">}</span>
 277 <span id="L213" class="LineNr">213 </span>
 278 <span id="L214" class="LineNr">214 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='life.mu.html#L214'>main</a></span> <a href='../500fake-screen.mu.html#L16'>screen</a>: (addr <a href='../500fake-screen.mu.html#L16'>screen</a>), keyboard: (addr keyboard), data-disk: (addr disk) <span class="Delimiter">{</span>
 279 <span id="L215" class="LineNr">215 </span><span class="CommentedCode">#?   # allocate on the stack</span>
 280 <span id="L216" class="LineNr">216 </span><span class="CommentedCode">#?   var grid1-storage: (array boolean 0xc000)  # width * height</span>
 281 <span id="L217" class="LineNr">217 </span><span class="CommentedCode">#?   var grid1/esi: (addr array boolean) &lt;- address grid1-storage</span>
 282 <span id="L218" class="LineNr">218 </span><span class="CommentedCode">#?   var grid2-storage: (array boolean 0xc000)  # width * height</span>
 283 <span id="L219" class="LineNr">219 </span><span class="CommentedCode">#?   var grid2/edi: (addr array boolean) &lt;- address grid2-storage</span>
 284 <span id="L220" class="LineNr">220 </span>  <span class="muComment"># allocate on the heap</span>
 285 <span id="L221" class="LineNr">221 </span>  <span class="PreProc">var</span> grid1-storage: (handle array boolean)
 286 <span id="L222" class="LineNr">222 </span>  <span class="PreProc">var</span> grid1-ah/eax: (addr handle array boolean) <span class="Special">&lt;-</span> address grid1-storage
 287 <span id="L223" class="LineNr">223 </span>  populate grid1-ah, <span class="Constant">0x3000</span>  <span class="muComment"># width * height</span>
 288 <span id="L224" class="LineNr">224 </span>  <span class="PreProc">var</span> _grid1/eax: (addr array boolean) <span class="Special">&lt;-</span> <a href='../120allocate.subx.html#L235'>lookup</a> *grid1-ah
 289 <span id="L225" class="LineNr">225 </span>  <span class="PreProc">var</span> grid1/<span class="muRegEsi">esi</span>: (addr array boolean) <span class="Special">&lt;-</span> copy _grid1
 290 <span id="L226" class="LineNr">226 </span>  <span class="PreProc">var</span> grid2-storage: (handle array boolean)
 291 <span id="L227" class="LineNr">227 </span>  <span class="PreProc">var</span> grid2-ah/eax: (addr handle array boolean) <span class="Special">&lt;-</span> address grid2-storage
 292 <span id="L228" class="LineNr">228 </span>  populate grid2-ah, <span class="Constant">0x3000</span>  <span class="muComment"># width * height</span>
 293 <span id="L229" class="LineNr">229 </span>  <span class="PreProc">var</span> _grid2/eax: (addr array boolean) <span class="Special">&lt;-</span> <a href='../120allocate.subx.html#L235'>lookup</a> *grid2-ah
 294 <span id="L230" class="LineNr">230 </span>  <span class="PreProc">var</span> grid2/<span class="muRegEdi">edi</span>: (addr array boolean) <span class="Special">&lt;-</span> copy _grid2
 295 <span id="L231" class="LineNr">231 </span>  <span class="muComment"># initialize grid1</span>
 296 <span id="L232" class="LineNr">232 </span>  <a href='life.mu.html#L38'>set-state</a> grid1, <span class="Constant">0x40</span>, <span class="Constant">0x2f</span>, <span class="Constant">1</span>/live
 297 <span id="L233" class="LineNr">233 </span>  <a href='life.mu.html#L38'>set-state</a> grid1, <span class="Constant">0x41</span>, <span class="Constant">0x2f</span>, <span class="Constant">1</span>/live
 298 <span id="L234" class="LineNr">234 </span>  <a href='life.mu.html#L38'>set-state</a> grid1, <span class="Constant">0x3f</span>, <span class="Constant">0x30</span>, <span class="Constant">1</span>/live
 299 <span id="L235" class="LineNr">235 </span>  <a href='life.mu.html#L38'>set-state</a> grid1, <span class="Constant">0x40</span>, <span class="Constant">0x30</span>, <span class="Constant">1</span>/live
 300 <span id="L236" class="LineNr">236 </span>  <a href='life.mu.html#L38'>set-state</a> grid1, <span class="Constant">0x40</span>, <span class="Constant">0x31</span>, <span class="Constant">1</span>/live
 301 <span id="L237" class="LineNr">237 </span>  <span class="muComment"># render grid1</span>
 302 <span id="L238" class="LineNr">238 </span>  <a href='life.mu.html#L186'>render</a> grid1
 303 <span id="L239" class="LineNr">239 </span>  <span class="Delimiter">{</span>
 304 <span id="L240" class="LineNr">240 </span>    <span class="PreProc">var</span> key/eax: byte <span class="Special">&lt;-</span> <a href='../102keyboard.subx.html#L21'>read-key</a> keyboard
 305 <span id="L241" class="LineNr">241 </span>    compare key, <span class="Constant">0</span>
 306 <span id="L242" class="LineNr">242 </span><span class="CommentedCode">#?     loop-if-=  # press key to step</span>
 307 <span id="L243" class="LineNr">243 </span>    <span class="PreProc">break-if-!=</span>  <span class="muComment"># press key to quit  # comment this out to run under bochs; I'm not sure why there's a newline in the keyboard buffer</span>
 308 <span id="L244" class="LineNr">244 </span>    <span class="muComment"># iter: grid1 -&gt; grid2</span>
 309 <span id="L245" class="LineNr">245 </span>    <a href='life.mu.html#L114'>step</a> grid1, grid2
 310 <span id="L246" class="LineNr">246 </span>    <a href='life.mu.html#L186'>render</a> grid2
 311 <span id="L247" class="LineNr">247 </span><span class="CommentedCode">#?     linger</span>
 312 <span id="L248" class="LineNr">248 </span>    <span class="muComment"># iter: grid2 -&gt; grid1</span>
 313 <span id="L249" class="LineNr">249 </span>    <a href='life.mu.html#L114'>step</a> grid2, grid1
 314 <span id="L250" class="LineNr">250 </span>    <a href='life.mu.html#L186'>render</a> grid1
 315 <span id="L251" class="LineNr">251 </span><span class="CommentedCode">#?     linger</span>
 316 <span id="L252" class="LineNr">252 </span>    <span class="PreProc">loop</span>
 317 <span id="L253" class="LineNr">253 </span>  <span class="Delimiter">}</span>
 318 <span id="L254" class="LineNr">254 </span><span class="Delimiter">}</span>
 319 <span id="L255" class="LineNr">255 </span>
 320 <span id="L256" class="LineNr">256 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='life.mu.html#L256'>linger</a></span> <span class="Delimiter">{</span>
 321 <span id="L257" class="LineNr">257 </span>  <span class="PreProc">var</span> i/<span class="muRegEcx">ecx</span>: int <span class="Special">&lt;-</span> copy <span class="Constant">0</span>
 322 <span id="L258" class="LineNr">258 </span>  <span class="Delimiter">{</span>
 323 <span id="L259" class="LineNr">259 </span>    compare i, <span class="Constant">0x10000000</span>  <span class="muComment"># Kartik's Linux with -accel kvm</span>
 324 <span id="L260" class="LineNr">260 </span><span class="CommentedCode">#?     compare i, 0x8000000  # Kartik's Mac with -accel tcg</span>
 325 <span id="L261" class="LineNr">261 </span>    <span class="PreProc">break-if-&gt;=</span>
 326 <span id="L262" class="LineNr">262 </span>    i <span class="Special">&lt;-</span> increment
 327 <span id="L263" class="LineNr">263 </span>    <span class="PreProc">loop</span>
 328 <span id="L264" class="LineNr">264 </span>  <span class="Delimiter">}</span>
 329 <span id="L265" class="LineNr">265 </span><span class="Delimiter">}</span>
 330 </pre>
 331 </body>
 332 </html>
 333 <!-- vim: set foldmethod=manual : -->