我再晕,写成这样行否???
#include <AT89X51.H><br /><br />void main(void)<br />{<br /> while(1)<br /> { <br /> P1_0 = P1_4;<br /> P1_1 = P1_5;<br /> }<br />}<br /><br /><br />汇编也许优化为:<br />mov c, p1.4;<br />mov p1.0, c;<br />mov c, p1.5;<br />mov p1.1, c;
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