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| stm32f407的板子,程序直接烧写到rom中可用, 
 由redboot引导到ram运行就出错,
 $T020f:00000000;0d:00000000;#ca$T020f:00000000;0d:00000000;#ca
 
 操作前
 RedBoot> dump -b 0x64008019 -1
 64008019: 16 00 16 00 16 00 16 00  16 00 16 00 16 00 16 00  |................|
 64008029: 16 00 16 00 16 00 16 00  16 00 16 00 16 00 16 00  |................|
 
 操作后也是一样
 RedBoot> dump -b 0x64008019 -1
 64008019: 16 00 16 00 16 00 16 00  16 00 16 00 16 00 16 00  |................|
 64008029: 16 00 16 00 16 00 16 00  16 00 16 00 16 00 16 00  |................|
 
 是不是程序没写到ram里面去?
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