📄 vesa编程介绍.htm
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face="Times New Roman">VGA</FONT><FONT lang=ZH-CN
face=宋体>模式号有7位，目前范围从</FONT><FONT face="Times New Roman">00h</FONT><FONT
lang=ZH-CN face=宋体>到</FONT><FONT face="Times New Roman">13h</FONT><FONT
lang=ZH-CN face=宋体>。</FONT><FONT face="Times New Roman">OEM</FONT><FONT
lang=ZH-CN face=宋体>可以在</FONT><FONT face="Times New Roman">14h-7Fh</FONT><FONT
lang=ZH-CN face=宋体>范围内定义扩展显示模式。</FONT><FONT
face="Times New Roman">80h-FFh</FONT><FONT lang=ZH-CN
face=宋体>范围不能使用，因为</FONT><FONT face="Times New Roman">VGA BIOS</FONT><FONT
lang=ZH-CN face=宋体>函数</FONT><FONT face="Times New Roman">00h</FONT><FONT
lang=ZH-CN face=宋体>（设置显示方式）将第七位作为判断是否清除显存的标志。</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT lang=ZH-CN face=宋体>由于模式号7位的限制，</FONT><FONT
face="Times New Roman">VESA</FONT><FONT lang=ZH-CN face=宋体>显示模式号有</FONT><FONT
face="Times New Roman">15</FONT><FONT lang=ZH-CN face=宋体>位宽。其数值通过</FONT><FONT
face="Times New Roman">BX</FONT><FONT lang=ZH-CN face=宋体>寄存器传送到</FONT><FONT
face="Times New Roman">VESA BIOS</FONT><FONT lang=ZH-CN face=宋体>函数</FONT><FONT
face="Times New Roman">02h</FONT><FONT lang=ZH-CN face=宋体>（设置超级</FONT><FONT
face="Times New Roman">VGA</FONT><FONT lang=ZH-CN face=宋体>模式）来初始化超级</FONT><FONT
face="Times New Roman">VGA</FONT><FONT lang=ZH-CN face=宋体>模式。</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT face="Times New Roman">VESA</FONT><FONT lang=ZH-CN
face=宋体>模式号的格式如下：</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT face="Times New Roman">D0-D8 </FONT><FONT lang=ZH-CN
face=宋体>模式号</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT lang=ZH-CN face=宋体>如果</FONT><FONT
face="Times New Roman">D8</FONT><FONT lang=ZH-CN face=宋体>为</FONT><FONT
face="Times New Roman">0</FONT><FONT lang=ZH-CN face=宋体> 不是</FONT><FONT
face="Times New Roman">VESA</FONT><FONT lang=ZH-CN
face=宋体>定义的模式</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT lang=ZH-CN face=宋体>如果</FONT><FONT
face="Times New Roman">D8</FONT><FONT lang=ZH-CN face=宋体>为</FONT><FONT
face="Times New Roman">1</FONT><FONT lang=ZH-CN face=宋体> 这是</FONT><FONT
face="Times New Roman">VESA</FONT><FONT lang=ZH-CN
face=宋体>定义的模式</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT face="Times New Roman">D9-D14 VESA</FONT><FONT lang=ZH-CN
face=宋体>为今后的扩展而保留（为</FONT><FONT face="Times New Roman">0</FONT><FONT lang=ZH-CN
face=宋体>）</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT face="Times New Roman">D15 </FONT><FONT lang=ZH-CN
face=宋体>保留（为</FONT><FONT face="Times New Roman">0</FONT><FONT lang=ZH-CN
face=宋体>）</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT lang=ZH-CN face=宋体>因此，</FONT><FONT
face="Times New Roman">VESA</FONT><FONT lang=ZH-CN face=宋体>模式号从</FONT><FONT
face="Times New Roman">100h</FONT><FONT lang=ZH-CN
face=宋体>开始。这种编号方式实现地将标准</FONT><FONT face="Times New Roman">VGA</FONT><FONT
lang=ZH-CN face=宋体>模式号和</FONT><FONT face="Times New Roman">OEM</FONT><FONT
lang=ZH-CN face=宋体>模式号做为</FONT><FONT face="Times New Roman">VESA</FONT><FONT
lang=ZH-CN face=宋体>模式号的一部分。这意味着普通的</FONT><FONT
face="Times New Roman">VGA</FONT><FONT lang=ZH-CN face=宋体>显示模式也能被</FONT><FONT
face="Times New Roman">VESA BIOS</FONT><FONT lang=ZH-CN face=宋体>函数</FONT><FONT
face="Times New Roman">02h</FONT><FONT lang=ZH-CN face=宋体>定义，即将模式号置入</FONT><FONT
face="Times New Roman">BL</FONT><FONT lang=ZH-CN face=宋体>，而将高位的</FONT><FONT
face="Times New Roman">BH</FONT><FONT lang=ZH-CN face=宋体>清除。</FONT><FONT
face="Times New Roman">OEM</FONT><FONT lang=ZH-CN
face=宋体>定义模式也可同样地初始化。</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT lang=ZH-CN face=宋体>例外，</FONT><FONT
face="Times New Roman">VESA</FONT><FONT lang=ZH-CN face=宋体>定义了</FONT><FONT
face="Times New Roman">7</FONT><FONT lang=ZH-CN face=宋体>位的模式号，</FONT><FONT
face="Times New Roman">6Ah</FONT><FONT lang=ZH-CN face=宋体>，来表示800</FONT><FONT
face="Times New Roman">x</FONT><FONT lang=ZH-CN
face=宋体>600，16色，4平面的显示模式。相应的15位模式号为</FONT><FONT
face="Times New Roman">102h</FONT><FONT lang=ZH-CN face=宋体>。</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT lang=ZH-CN face=宋体>以下是已经定义了的</FONT><FONT
face="Times New Roman">VESA</FONT><FONT lang=ZH-CN
face=宋体>模式号：</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
lang=ZH-CN face=宋体 size=2>图象 文本</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
lang=ZH-CN face=宋体 size=2>15位模式号 7位模式号 分辨率 色彩 15位模式号 7位模式号 列数 行数</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%">------------------------------------------------------------------------------------------</P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
lang=ZH-CN face=宋体 size=3></FONT><FONT face="Times New Roman" size=2>100h ---
640x400 256 108h --- 80 60</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>101h --- 640x480 256</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>109h --- 132 25</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>102h 6Ah 800x600 16 10Ah --- 132 43</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>103h --- 800x600 256 10Bh --- 132 50</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>10Ch --- 132 60</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>104h --- 1024x768 16</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>105h --- 1024x768 256</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>106h --- 1280x1024 16</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>107h --- 1280x1024 256</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>10Dh --- 320x200 32K 1:5:5:5</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>10Eh --- 320x200 64k 6:5:5</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>10Fh --- 320x200 16.8M 8:8:8</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>110h --- 640x480 32K 1:5:5:5</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>111h --- 640x480 64K 6:5:5</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>112h --- 640x480 16.5M 8:8:8</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>113h --- 800x600 32K 1:5:5:5</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>114h --- 800x600 64K 6:5:5</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>115h --- 800x600 16.5M 8:8:8</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>116h --- 1024x768 32K 1:5:5:5</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>117h --- 1024x768 64K 6:5:5</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>118h --- 1024x768 16.5M 8:8:8</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>119h --- 1280x1024 32K 1:5:5:5</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>11Ah --- 1280x1024 64K 6:5:5</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>11Bh --- 1280x1024 16.5M 8:8:8</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
face="Times New Roman" size=2>11Ch --- 1600x1200 256</FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT face="Times New Roman">11Dh --- 1600x1200 32K </FONT><FONT
lang=ZH-CN face=宋体>未检验</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2><FONT face="Times New Roman">11Eh --- 1600x1200 64K </FONT><FONT
lang=ZH-CN face=宋体>未检验</FONT></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"> </P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
lang=ZH-CN face=宋体 size=2><End></FONT></P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%">------------------------------------------------------------------------------------------</P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"><FONT
size=2> 相关章节: (1): 标准<FONT face="Times New Roman">VGA
BIOS</FONT>及超级<FONT
face="Times New Roman">VGA</FONT>模式号 <A
href="http://shaker.myrice.com/document/vesa-program-introduce/vesa-introduce-2.htm"><FONT
face="Times New Roman">(2)</FONT>:CPU<FONT lang=ZH-CN>显存控制</FONT></A><FONT
lang=ZH-CN> </FONT><FONT lang=ZH-CN
face="Times New Roman"><A
href="http://shaker.myrice.com/document/vesa-program-introduce/vesa-introduce-3.htm">(3)</A></FONT><A
href="http://shaker.myrice.com/document/vesa-program-introduce/vesa-introduce-3.htm">:<FONT
lang=ZH-CN>扩展的VGA BIOS</FONT></A></FONT> </P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%"> <FONT
lang=ZH-CN face="Times New Roman" size=2> <A
href="http://shaker.myrice.com/document/vesa-program-introduce/vesa-introduce-4.htm">(4):
</A></FONT><A
href="http://shaker.myrice.com/document/vesa-program-introduce/vesa-introduce-4.htm"><FONT
lang=ZH-CN size=2>扩展的VGA BIOS</FONT><FONT lang=ZH-CN face="Times New Roman"
size=2>(</FONT><FONT lang=ZH-CN size=2>续</FONT><FONT lang=ZH-CN
face="Times New Roman" size=2>)</FONT><FONT lang=ZH-CN size=2>及应用举例</FONT></A>
</P>
<P
style="MARGIN: 0px; WORD-SPACING: 0px; TEXT-INDENT: 0px; LINE-HEIGHT: 100%">==========================================================================================</P></BODY></HTML>
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