https://blog.youkuaiyun.com/vcvbvezh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/vcvbve/article/details/50724277https://blog.youkuaiyun.com/vcvbve/article/details/50724277vcvbveTue, 23 Feb 2016 16:43:16 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5686492https://blog.youkuaiyun.com/vcvbve/article/details/5686492vcvbveTue, 22 Jun 2010 14:39:00 +0800ARM处理器运行速度很快，当系统时钟为60Mhz时，一条指令的执行时间只需十几纳秒（ns）。Flash存储器的速度无法满足ARM处理器对指令的需求。ARM通过将内部flash部件的总线宽度扩展成128位宽度，来解决这个问题，虽然Flash的一次读写操作仍要50ns左右，但是一次操作可以获取4条ARM指令（或者八条Thumb指令），平均一条指令只有几十ns，和处理器相当。
       用存储器加速模块（MAM）来管理128位宽度的Flash存储器。
1.MAM结构 
https://blog.youkuaiyun.com/vcvbve/article/details/5667092https://blog.youkuaiyun.com/vcvbve/article/details/5667092vcvbveSat, 12 Jun 2010 17:09:00 +0800文章来源：http://www.kuqin.com/language/20090314/39898.html

摘要
不管是否愿意承认，每个人都希望程序的运行速度越快越好。每天人们都你追我赶，好像明天就是末日。而同时，公关部的那些家伙则不停的吼叫着，说他们的新引擎比其他人的更“快”更“好”。
我并不打算告诉你如何让你的代码跑得比别人的快。我只是想告诉你，如何让你的代码更快、更高效，当然，是跟你原来的代码相比。
我讲述的内容主要涉及三个概念，这三者]]>https://blog.youkuaiyun.com/vcvbve/article/details/5656348https://blog.youkuaiyun.com/vcvbve/article/details/5656348vcvbveTue, 08 Jun 2010 17:44:00 +0800 
图1 
普通的单片机把可执行代码和数据存放到存储器中。]]>https://blog.youkuaiyun.com/vcvbve/article/details/5638611https://blog.youkuaiyun.com/vcvbve/article/details/5638611vcvbveTue, 01 Jun 2010 10:01:00 +0800http://blog.youkuaiyun.com/seton040/archive/2009/11/03/4764935.aspx
 
某日，看到一道比较恶心的C语言的试题，考了很多比较绕的知识点，嘴脸如下：

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int main(void)
{
    int a[4] = ]]>https://blog.youkuaiyun.com/vcvbve/article/details/5630984https://blog.youkuaiyun.com/vcvbve/article/details/5630984vcvbveFri, 28 May 2010 15:41:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5623279https://blog.youkuaiyun.com/vcvbve/article/details/5623279vcvbveTue, 25 May 2010 17:02:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5614284https://blog.youkuaiyun.com/vcvbve/article/details/5614284vcvbveFri, 21 May 2010 15:37:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5567261https://blog.youkuaiyun.com/vcvbve/article/details/5567261vcvbveFri, 07 May 2010 15:34:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5562642https://blog.youkuaiyun.com/vcvbve/article/details/5562642vcvbveThu, 06 May 2010 11:30:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5562633https://blog.youkuaiyun.com/vcvbve/article/details/5562633vcvbveThu, 06 May 2010 11:29:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5560020https://blog.youkuaiyun.com/vcvbve/article/details/5560020vcvbveWed, 05 May 2010 16:27:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5456745https://blog.youkuaiyun.com/vcvbve/article/details/5456745vcvbveWed, 07 Apr 2010 09:16:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5455398https://blog.youkuaiyun.com/vcvbve/article/details/5455398vcvbveTue, 06 Apr 2010 17:36:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5374068https://blog.youkuaiyun.com/vcvbve/article/details/5374068vcvbveFri, 12 Mar 2010 14:49:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5372593https://blog.youkuaiyun.com/vcvbve/article/details/5372593vcvbveFri, 12 Mar 2010 09:15:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5372497https://blog.youkuaiyun.com/vcvbve/article/details/5372497vcvbveFri, 12 Mar 2010 08:47:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5369077https://blog.youkuaiyun.com/vcvbve/article/details/5369077vcvbveThu, 11 Mar 2010 13:59:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5368205https://blog.youkuaiyun.com/vcvbve/article/details/5368205vcvbveThu, 11 Mar 2010 11:37:00 +0800https://blog.youkuaiyun.com/vcvbve/article/details/5367901https://blog.youkuaiyun.com/vcvbve/article/details/5367901vcvbveThu, 11 Mar 2010 11:02:00 +0800