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https://github.com/lscharen/iigs-game-engine.git
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Document GTEReadControl, GTESetScreenMode and GTESetTile
This commit is contained in:
Lucas Scharenbroich
parent
bbac2c411c
commit
a78d1f24e5
@ -1,4 +1,14 @@
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/* Style for the fancy API documentation */
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div.example {
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border-top: 1px solid red;
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}
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div.example > h5 {
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font-weight: bold;
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font-size: larger;
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color: #111;
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}
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div.api_intro h1, h2, h3, h4, h5 {
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font-family: helvetica, sans-serif;
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}
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@ -24,6 +34,14 @@ div.api_intro h1, h2, h3, h4, h5 {
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margin: 1em 0;
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}
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div.api:before {
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border-bottom: 1px solid red;
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content:"";
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height: 1px;
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width: 100%;
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float: left;
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}
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div.api > p
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{
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margin-left: 100px;
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@ -79,6 +97,11 @@ div.api_intro h1, h2, h3, h4, h5 {
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border-collapse: collapse;
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}
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table.bitfield-definitions tr > td:first-child
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{
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white-space: nowrap;
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}
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table.bits td
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{
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padding: 5px;
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@ -114,7 +137,9 @@ div.api_intro h1, h2, h3, h4, h5 {
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border-bottom: 1px solid black;
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font-family: helvetica;
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font-size: small;
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margin-top: 2em;
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/* margin-top: 2em; */
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margin-left: 100px;
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margin-bottom: 15px;
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}
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div.warning:before
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@ -326,7 +326,7 @@ style: toolref
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<div class="api">
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<h4 class="tn">$02XX</h4>
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<h4>GTEStartUp</h4>
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<h4 id="GTEStartUp">GTEStartUp</h4>
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<p>
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Starts up the GTE Tool Set for use by an application.
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</p>
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@ -733,9 +733,36 @@ style: toolref
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</div>
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<div class="section">
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<h5>Errors</h5>
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<p>None</p>
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</div>
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<div class="section">
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<h5>C</h5>
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<p><tt>extern pascal Word GTEReadControl()</tt></p>
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</div>
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<div class="example">
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<h5>Returned value</h5>
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<p>
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The value returned in <em>userInput</em> bitfield are show below.
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</p>
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<table class="bits bitfield">
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<colgroup span="6" style="background-color: #999;"></colgroup>
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<colgroup span="10" style="background-color: #fff;"></colgroup>
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<tbody>
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<tr>
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<td>15</td><td>14</td><td>13</td><td>12</td><td>11</td><td>10</td><td>9</td><td>8</td><td>7</td><td>6</td><td>5</td><td>4</td><td>3</td><td>2</td><td>1</td><td>0</td>
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</tr>
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</tbody>
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</table>
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<table class="bitfield-definitions">
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<tbody>
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<tr><td>Bits 0-7</td><td><em>keyCode</em></td><td>Keyboard code read from the Keyboard register. If no key is currently pressed, this value is zero.</td></tr>
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<tr><td>Bit 8</td><td>Reserved</td><td>Must be zero.</td></tr>
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<tr><td>Bit 9</td><td>fPadButtonB</td><td>Set to 1 if the <tt>B</tt> button of the gamepad is pressed. Mapped to the option key by default.</td></tr>
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<tr><td>Bit 10</td><td>fPadButtonA</td><td>Set to 1 if the <tt>A</tt> button of the gamepad is pressed. Mapped to the command key by default.</td></tr>
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<tr><td>Bit 11</td><td>fKeyDown</td><td>Set to 1 on the initial press of a key. If a key is held down, the <tt>keyCode</tt> will be set and this bit will be zero.</tt></td></tr>
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<tr><td>Bits 12-15</td><td>Reserved</td><td>Must be zero.</td></tr>
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</tbody>
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</table>
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</div>
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</div>
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@ -758,6 +785,16 @@ style: toolref
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<tr>
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<td class="top">previous contents</td>
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</tr>
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<tr>
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<td class="bot">width</td>
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<td><em></em></td>
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<td><em>Word</em>—Width of the playfield in pixels. Must be even.</td>
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</tr>
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<tr>
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<td class="bot">height</td>
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<td><em></em></td>
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<td><em>Word</em>—Height of the playfield in pixels.</td>
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</tr>
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<tr>
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<td class="bot"></td>
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<td><em>←</em></td>
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@ -792,6 +829,103 @@ style: toolref
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</div>
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<div class="section">
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<h5>C</h5>
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<p><tt>extern pascal void GTESetScreenMode(width, height)</tt></p>
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<p><tt>Word width;</tt></p>
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<p><tt>Word height;</tt></p>
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</div>
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<div class="example">
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<h5>Predefined Screen Sizes</h5>
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<p>
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If the <em>width</em> value is set to a small number, then one of the pre-defined screen sizes will be selected. Set
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the <em>width</em> to the index number of the screen sizes in the table below to set the screen size to
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those dimension. The <em>height</em> value must still be passed, but is ignored.
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</p>
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<table>
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<thead>
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<tr style="white-space: nowrap;">
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<th>Play Field Id</th>
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<th>Width</th>
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<th>Height</th>
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<th></th>
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<th>Size (bytes)</th>
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<th>Percent of Full Screen</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>0</td>
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<td>320</td>
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<td>200</td>
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<td>Full Screen</td>
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<td>32,000</td>
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<td>100%</td>
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</tr>
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<tr>
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<td>1</td>
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<td>272</td>
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<td>192</td>
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<td>Sword of Sodan</td>
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<td>26,112</td>
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<td>81.6%</td>
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</tr>
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<tr>
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<td>2</td>
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<td>256</td>
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<td>200</td>
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<td>NES (approx.)</td>
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<td>25,600</td>
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<td>80.0%</td>
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</tr>
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<tr>
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<td>3</td>
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<td>256</td>
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<td>176</td>
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<td>Task Force</td>
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<td>22,528</td>
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<td>70.4%</td>
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</tr>
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<tr>
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<td>4</td>
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<td>280</td>
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<td>160</td>
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<td>Defender of the World</td>
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<td>22,400</td>
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<td>70.0%</td>
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</tr>
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<tr>
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<td>5</td>
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<td>256</td>
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<td>160</td>
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<td>Rastan</td>
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<td>20,480</td>
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<td>64.0%</td>
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</tr>
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<tr>
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<td>6</td>
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<td>240</td>
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<td>160</td>
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<td>Game Boy Advanced</td>
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<td>19,200</td>
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<td>60.0%</td>
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</tr>
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<tr>
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<td>7</td>
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<td>288</td>
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<td>128</td>
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<td>Ancient Land of Y's</td>
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<td>18,432</td>
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<td>57.6%</td>
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</tr>
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<tr>
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<td>8</td>
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<td>160</td>
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<td>144</td>
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<td>Game Boy Color</td>
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<td>11,520</td>
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<td>36.0%</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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@ -814,6 +948,21 @@ style: toolref
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<tr>
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<td class="top">previous contents</td>
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</tr>
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<tr>
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<td class="bot">x</td>
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<td><em></em></td>
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<td><em>Word</em>—Horizontal index of the TileStore tile to set. Must be in the range of 0 to 40.</td>
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</tr>
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<tr>
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<td class="bot">y</td>
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<td><em></em></td>
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<td><em>Word</em>—Vertical index of the TileStore tile to set. Must be in the range of 0 to 25.</td>
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</tr>
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<tr>
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<td class="bot">tileID</td>
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<td><em></em></td>
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<td><em>Word</em>—Tile ID to place in the TileStore.</td>
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</tr>
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<tr>
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<td class="bot"></td>
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<td><em>←</em></td>
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@ -848,6 +997,38 @@ style: toolref
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</div>
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<div class="section">
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<h5>C</h5>
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<p><tt>extern pascal void GTESetTile(x, y, tileID)</tt></p>
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<p><tt>Word width;</tt></p>
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<p><tt>Word height;</tt></p>
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<p><tt>Word tileID;</tt></p>
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</div>
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<div class="example">
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<h5>Tile Identifiers</h5>
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<p>
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The tile ID word is defined as follows
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</p>
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<table class="bits bitfield">
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<colgroup span="1" style="background-color: #999;"></colgroup>
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<colgroup span="6" style="background-color: lightblue;"></colgroup>
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<colgroup span="9" style="background-color: white;"></colgroup>
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<tbody>
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<tr>
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<td>15</td><td>14</td><td>13</td><td>12</td><td>11</td><td>10</td><td>9</td><td>8</td><td>7</td><td>6</td><td>5</td><td>4</td><td>3</td><td>2</td><td>1</td><td>0</td>
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</tr>
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</tbody>
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</table>
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<table class="bitfield-definitions">
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<tbody>
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<tr><td>Bits 0-8</td><td>tileIndex</td><td>The index of the tile in the current Tile Set. A Tile Set can be defined by calling the <tt>GTELoadTileSet</tt> function</td></tr>
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<tr><td>Bit 9</td><td>fTileHFlip</td><td>Flips the tile horizontally when set.</td></tr>
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<tr><td>Bit 10</td><td>fTileVFlip</td><td>Flips the tile vertically when set.</td></tr>
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<tr><td>Bit 11</td><td>fTileDynamic</td><td>Identifies this tile as a dynamic tile. The <tt>tileIndex</tt> is used to identify the dynamic tile data slow and must be in the range 0 to 31.</td></tr>
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<tr><td>Bit 12</td><td>fTileSolid</td><td>Hint bit that marks a tile as having no mask. Can improve performance when ENGINE_MODE_TWO_LAYER is set.</td></tr>
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<tr><td>Bit 13</td><td>fTileFringe</td><td>Unused. Must be zero.</td></tr>
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<tr><td>Bit 14</td><td>fTilePriority</td><td>Sets the tile to high priority. Sprites will render under this tile, if supported.</td></tr>
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<tr><td>Bit 15</td><td>Reserved</td><td>Must be zero.</td></tr>
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</tbody>
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</table>
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</div>
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</div>
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