单片机课程设计万年历的实现 ORG 0 SJMP STAR ORG 0013H LJMP XW ORG 001BH LJMP TLSTART ORG 30H STAR: CLR RS0 CLR RS1 MOV SP,#30H MOV TMOD,#10H SETB PX1 CLR IT1 MOV IE,#8CH MOV TH1,