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28335将FLASH复制到RAM中运行CMD文件的疑问?

SPRAAU8

/*** Initialized Sections ***/
.cinit : LOAD = FLASHA, PAGE = 0 /* can be ROM */
RUN = RAM_L0L1L2L3, PAGE = 0 /* must be CSM secured RAM */
LOAD_START(_cinit_loadstart),
RUN_START(_cinit_runstart),
SIZE(_cinit_size)

上面RAM_L0L1L2L3也就是前16KRAM,28335共32KRAM难道RAM_L0L1L2L3只能是前16K吗, /* must be CSM secured RAM */注释中的意思是只能前16K,在RAM中运行的时候好像都可以呀,这个地方有点不解