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关于SK1例程MAPX映射的问题



{0x10000000,    0x010000000>>4,  0x08000000,     MP_SR|MP_SW|MP_UR|MP_UW},/*L1, LL2 global address space, RW*/

问题1:

映射表中有一条如上所示。L2的本地地址为0x00800000,全局地址为0x10800000

0x010000000>>4不应该是0x00800000>4吗? 

问题2:

注释中标有L1,还有这个映射为什么和L1有关系呢,L1P起始地址0x00E00000,L1D是0x00F00000,是怎么关联的。

问题3:

L2的全局地址是默认就设置好了,还是需要MAPX配置。