【正文】 030201步進(jìn)輸出值10H30H20H60H40H0C0H80H90HBUJIN2子程序R00001020304050607步進(jìn)輸出值90H80H0C0H40H60H20H30H10H程序如下：BUJIN2: MOV R2,00H。記錄已執(zhí)行的拍數(shù) MOV DPTR,L2 MOV A,R0 CJNE A,00H,BU1BU0: MOV R0,00H MOV DPTR,L2BU1: MOV B,R0 MOV A,B MOVC A,A+DPTR MOV P1,A INC R1 CALL DLIMS MOV A,R1 CLR C SUBB A,R3 JC BU2 MOV R1,00H INC R2 MOV R5,0FHYSB: ACALL DLIMS DJNZ R5,YSB MOV A,R2 CJNE A,60H,BU2 JMP BU3BU2: INC R0 MOV A,R0 CJNE A,08H,BU1 SJMP BU0L2:DB 90H,80H,0C0H,40H,60H,20H,30H,10HBU3: RET3. 程序附錄源程序：ORG 0000HLJMP MAINORG 0100HMAIN: MOV 50H,00H MOV 51H,00H MOV 52H,00H MOV 53H,00H MOV R4,00H MOV DPTR,7F03H MOV A,89H MOVX DPTR,ABEGIN: MOV DPTR,7F01H MOV A,00H MOVX DPTR,A MOV DPTR,7F02H MOVX A,DPTR ANL A,06H CJNE A,06H,INK1 ACALL DIS AJMP BEGININK1: ACALL DLIMS MOV DPTR,7F02H MOVX A,DPTR ANL A,06H CJNE A,06H,INK2 AJMP BEGININK2: MOV DPTR,7F01H MOV A,0FBH MOVX DPTR,A MOV DPTR,7F02H MOVX A,DPTR JNB ,KEY2 JNB ,KEY4 MOV DPTR,7F01H MOV A,0F7H MOVX DPTR,A MOV DPTR,7F02H MOVX A,DPTR JNB ,KEYCLR JNB ,KEYSET MOV DPTR,7F01H MOV A,0EFH MOVX DPTR,A MOV DPTR,7F02H MOVX A,DPTR JNB ,KEY5 JNB ,KEYSTART MOV DPTR,7F01H MOV A,0DFH MOVX DPTR,A MOV DPTR,7F02H MOVX A,DPTR JNB ,KEY7 JNB ,KEY0 LJMP STTKKEY0: MOV A,00H ACALL BUF ACALL DIS AJMP STTKKEY2: MOV A,02H ACALL BUF ACALL DIS AJMP STTKKEY4: MOV A,04H ACALL BUF ACALL D