keil编译后ROM和RAM变化

KEIL中编译后几个空间大小
1.Code=656:程序代码占用的空间
2.RO-data=208:程序中常量占用的空间，只读数据如const+变量类型
3.RW-data=0:初值不为0已被初始化的可读/写数据,运行时变量调用到RAM中。
4.ZI-data=1632:初值为0未进行初始化的可读/写数据
RO:指令和常量=RO-data+RW-data
RW:初始化变量=RW-data+ZI-data
烧写的文件=RO+RW
RAM空间=RW+ZI
flash:Code+RO-data+RW-data
ram:RW-data+ZI-data

int main(void){}
//Program Size: Code=656 RO-data=208 RW-data=0 ZI-data=1632    

int main(void){char mm;}
//Program Size: Code=656 RO-data=208 RW-data=0 ZI-data=1632  

char mm;
int main(void){}
//Program Size: Code=656 RO-data=208 RW-data=0 ZI-data=1632  

const char mm=10;
int main(void){}
//Program Size: Code=656 RO-data=208 RW-data=0 ZI-data=1632  

char mm=10;
int main(void){}
//Program Size: Code=656 RO-data=208 RW-data=0 ZI-data=1632  

char mm=10;
int main(void){mm++;}
//Program Size: Code=700 RO-data=224 RW-data=4 ZI-data=1636  

int main(void){char mm=10;}
//Program Size: Code=660 RO-data=208 RW-data=0 ZI-data=1632  

int main(void){char mm=10;mm++;}
//Program Size: Code=660 RO-data=208 RW-data=0 ZI-data=1632  

const char mm=10;
char tt;
int main(void){}
//Program Size: Code=656 RO-data=208 RW-data=0 ZI-data=1632  

const char mm=10;
char tt;
int main(void){if(mm==10)tt++;}
//Program Size: Code=700 RO-data=224 RW-data=4 ZI-data=1636  

const char mm[10]={1,2,3,4,5,6,7,8,9,10};
char tt;
int main(void){if(mm[2]==3)tt++;}
//Program Size: Code=712 RO-data=236 RW-data=4 ZI-data=1636  

char mm[10]={1,2,3,4,5,6,7,8,9,10};
char tt;
int main(void){if(mm[2]==3)tt++;}
//Program Size: Code=712 RO-data=224 RW-data=12 ZI-data=1636