查看“分类:Directory”的源代码

==Main sections== <!--T:6-->
<categorytree mode=all style="float:right; clear:right; margin-left:1ex; border:1px solid gray; padding:0.7ex; background-color:white;">ARM裸机加强版</categorytree>

=== For system administrators === <!--T:7-->

再来解决最后一个问题：每个像素再FrameBuffer中，占据多少位BPP(Bits Per Pixels)？
前面的LCD引脚功能图里，R0-R7、G0-G7、B0-B7，每个像素是占据3*8=24位的，即硬件上LCD的BPP是确定的。
虽然LCD上的引脚是固定的，但我们使用的时候，可以根据实际情况进行取舍，比如我们的JZ2440使用的是16BPP，因此LCD只需要R0-R4、G0-G5、B0-B4与SOC相连，5+6+6=16BPP，每个像素就只占据16位数据。

我们写程序的思路如下：
1. 查看LCD芯片手册，查看相关的时间参数、分辨率、引脚极性；
2. 根据以上信息设置LCD控制器寄存器，让其发出正确信号；
3. 在内存里面分配一个FrameBuffer，在里面用若干位表示一个像素，再把首地址告诉LCD控制器；

之后LCD控制器就能周而复始取出FrameBuffer里面的像素数据，配合其它控制信号，发送给电子枪，电子枪再让在LCD上显示出来。以后我们想显示图像，只需要编写程序向FrameBuffer填入相应数据即可，硬件会自动的完成显示操作。




''<translate><!--T:17--> More on <tvar|hub>{{ll|Sysadmin hub}}</>.</translate>''
| style="width:50%; vertical-align:top; border:1px solid #aaa; padding:.5em 1.5em" |
<translate>
=== For developers === <!--T:18-->
</translate>
; <translate><!--T:19--> Architecture</translate>
: <translate><!--T:20--> An overview of the key parts of MediaWiki's source code.</translate>
: {{ll|Manual:Code|nsp=0}} | {{ll|Manual:Global object variables|nsp=0}} | [https://doc.wikimedia.org/ <translate><!--T:21--> Doxygen-generated documentation</translate>]
; {{ll|Manual:Database layout|nsp=0}}
: <translate><!--T:22--> Details about the database architecture used by MediaWiki.</translate>
: {{ll|Manual:MySQL|MySQL/MariaDB}} | {{ll|Manual:PostgreSQL|nsp=0}} | {{ll|Manual:SQLite|nsp=0}}
; {{ll|Manual:Developing extensions|nsp=0}}
: <translate><!--T:24--> An overview of the ways to create a new MediaWiki extension.</translate>
: {{ll|Manual:Hooks|nsp=0}} | {{ll|Manual:Parser functions|nsp=0}} | {{ll|Manual:Tag extensions|<translate><!--T:25--> Tag</translate>}} | {{ll|Manual:Special pages|<translate><!--T:26--> Special page</translate>}} | {{ll|Manual:Skins|nsp=0}}
; <translate><!--T:27--> Web access</translate>
: <translate><!--T:28--> Details about [[w:Query string|query string]] parameters that can be passed to MediaWiki access scripts.</translate>
: {{ll|Manual:Parameters to index.php|index.php}} | {{ll|API:Main page|api.php}}

''<translate><!--T:29--> More on <tvar|hub>{{ll|Developer hub}}</>.</translate>''
|}
<translate>

=== Others === <!--T:30-->
</translate>
; {{ll|Manual:FAQ|<translate><!--T:31--> MediaWiki FAQ</translate>}}
: <translate><!--T:32--> Frequently asked questions about MediaWiki.</translate>

<translate>
== Browsing the manual == <!--T:33-->

<!--T:34-->
There are multiple ways to browse through the documentation.</translate>
<translate>
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Readers having trouble finding a particular topic in the section above may find the following ways of browsing to be helpful.
</translate>
* [[Special:Allpages/Manual:]] - <translate><!--T:36--> An automatically generated list of all pages in the Manual: namespace.</translate>
* [[:Category:Manual]] - <translate><!--T:37--> the top-level Manual category</translate>

<translate>
== Improving the manual == <!--T:38-->

<!--T:39-->
* There are still a lot of holes in this manual!</translate> <translate><!--T:40--> See the [[<tvar|todo>Special:MyLanguage/Manual:Contents/To do</>|'to do' page]] for details.</translate>
<translate>
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* There is still content on <tvar|url>https://meta.wikimedia.org</> which may need to be migrated.</translate> <translate><!--T:42--> If you can't find information on a particular issue in this documentation, please visit <tvar|help>[[meta:Help:Contents]]</>.</translate>
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<!--T:43-->
* '''[[Project:Manual]]''' is a place to discuss and co-ordinate the development of the Manual: namespace.</translate>
<translate>
<!--T:44-->
* See also <tvar|issues>[[Project:Current issues]]</>.

== MediaWiki Virtual Library == <!--T:45-->


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