📄 22-cga.htm
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<title>CGA adapter</title>
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<p align="center"><font color="#0000FF" size="5"><strong><u>CGA 显示接口</u></strong></font></p>
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<td width="100%" align="center" height="26" bgcolor="#FFC8AA"><font color="#000080">[ <a target="_self" href="hardware.htm" tppabs="http://linux.ustc.edu.cn/~xjiang/hardware.htm">返回目录</a> ]</font></td>
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<p><font color="#008080">CGA 是 Color Graphics Adapter 的缩写，信号类型为 TTL，最多能显示
16 色，显示卡端的接口为 9 针母插座：</font></p>
<p><img src="conn_dsub9f.gif" tppabs="http://linux.ustc.edu.cn/~xjiang/hardware/images/conn_dsub9f.gif" alt="9 PIN D-SUB FEMALE" align="bottom" WIDTH="84" HEIGHT="65"></p>
<p><font color="#008080">显示器连线端的接口为 9 针公插头：</font><br>
<img src="conn_dsub9m.gif" tppabs="http://linux.ustc.edu.cn/~xjiang/hardware/images/conn_dsub9m.gif" alt="9 PIN D-SUB MALE" align="bottom" WIDTH="83" HEIGHT="65"></p>
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<td width="100%" align="center" height="24" bgcolor="#C8C8FF"><font color="#000080">引脚定义</font></td>
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<th bgcolor="#0000FF"><font color="#FFFF00">Pin</font></th>
<th bgcolor="#0000FF"><font color="#FFFF00">Name</font></th>
<th bgcolor="#0000FF"><font color="#FFFF00">Description</font></th>
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<td bgcolor="#C8C8FF"><font color="#008080">1</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">GND</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">Ground</font></td>
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<td bgcolor="#C8C8FF"><font color="#008080">2</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">GND</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">Ground</font></td>
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<td bgcolor="#C8C8FF"><font color="#008080">3</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">R</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">Red</font></td>
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<td bgcolor="#C8C8FF"><font color="#008080">4</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">G</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">Green</font></td>
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<td bgcolor="#C8C8FF"><font color="#008080">5</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">B</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">Blue</font></td>
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<td bgcolor="#C8C8FF"><font color="#008080">6</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">I</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">Intensity</font></td>
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<td bgcolor="#C8C8FF"><font color="#008080">7</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">RES</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">Reserved</font></td>
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<td bgcolor="#C8C8FF"><font color="#008080">8</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">HSYNC</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">Horizontal Sync</font></td>
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<td bgcolor="#C8C8FF"><font color="#008080">9</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">VSYNC</font></td>
<td bgcolor="#C8C8FF"><font color="#008080">Vertical Sync</font></td>
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