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问 我在430的头文件里找到一些函数，有人说是本征函数
我也在某些示例程序里面见过这些，但还是很了解，除了下面的这些还有哪些？

__intrinsic void __no_operation(void);
__intrinsic void __enable_interrupt(void);
__intrinsic void __disable_interrupt(void);
__intrinsic istate_t __get_interrupt_state(void);
__intrinsic void __set_interrupt_state(istate_t);
__intrinsic void __op_code(unsigned short);
__intrinsic unsigned short __swap_bytes(unsigned short);
__intrinsic void __bic_SR_register(unsigned short);
__intrinsic void __bis_SR_register(unsigned short);
__intrinsic unsigned short __get_SR_register(void);
__intrinsic void __bic_SR_register_on_exit(unsigned short);
__intrinsic void __bis_SR_register_on_exit(unsigned short);
__intrinsic unsigned short __get_SR_register_on_exit(void);

还有
__intrinsic unsigned short _BIS_SR(unsigned short);
__intrinsic unsigned short _BIC_SR(unsigned short);
__intrinsic unsigned short _BIS_SR_IRQ(unsigned short);
__intrinsic unsigned short _BIC_SR_IRQ(unsigned short);
__intrinsic unsigned short _BIS_NMI_IE1(unsigned short);

还有
#define _DINT() __disable_interrupt()
#define _EINT() __enable_interrupt()
#define _NOP() __no_operation()
#define _OPC(x) __op_code(x)
#define _SWAP_BYTES(x) __swap_bytes(x)

还有那些，这些都是作什么用的？ 答 1: 可以直接调用 答 2: _DINT() 允许中断
_EINT() 关闭中断
_NOP() 空操作
等 答 3: _DINT()关闭中断
_EINT() 允许中断
搞反了吧 答 4: 引用: 答 5: 引用: