shizhong 1.asm

51单片机实验用的程序 希望对你能有所帮助 包括跑马 十进制显 电子琴

ORG   0000H
AJMP MAIN
ORG  000BH
AJMP NEXT
MAIN:MOV  DPTR,#TAB
MOV  R0,#0H
MOV  R1,#0H
MOV  R2,#0H
MOV  R3,#0H
MOV  R4,#0H
MOV  TMOD,#06H
MOV TH0,#0FFH
MOV TL0,#0FFH
SETB EA
SETB ET0
SETB TR0
SJMP $
NEXT:
CJNE R0,#3CH,AA
MOV  R0,#0H
MOV  R3,#1H
AA:INC R0
MOV B,#0AH
MOV A,R0
DIV  AB
MOV  P1,R5
PUSH A
MOV  A,B
MOVC A,@A+DPTR
MOV  P2,A
POP A
PUSH  A
MOV A,P1
 RL A
MOV  P1,A
POP A
MOVC  A,@A+DPTR
MOV  P2,A
RETI
TAB: DB 3FH,06H,5BH,4FH,6H,6DH,7DH,07H,7FH,6FH
END