原创 ti msp430的读写地址空间的编译如何实现的呢？

在 lnk_msp430c111.cmd 中添加 如下代码
SB_0            = 0x0000;
SB_1            = 0x0001;
SB_2            = 0x0002;
SB_3            = 0x0003;
SB_4            = 0x0004;

然后在main.c中添加

#include "msp430x11x1.h"

//在"msp430x11x1.h" 中包含::  #define SFR_16BIT(address)  extern volatile unsigned int address

SFR_16BIT(SB_0);  
SFR_16BIT(SB_1);
SFR_16BIT(SB_2);
SFR_16BIT(SB_3);
SFR_16BIT(SB_4);
void main() {                               //反汇编结果

int i;                         //SUB.W #2,SP
SB_0 = 0x01;          //MOV.W #1,&0x0000                    
i    = SB_0;               //MOV.W &0x0000,0x0000(SP)
SB_1 = 0x02+SB_0;  //MOV.W #2,R15       MOV.W R15,&0X0001
SB_2 = 0x03;           //MOV.W #0x0003,&0x0002

....

}

我比较奇怪的是为什么SB_0 SB_1 SB_2会当作类似 int *来用呢？