;下列程序,经过编译、仿真,符合要求:
ORG 0000H
SJMP START
ORG 000BH
SJMP T0_INT
START:
MOV TMOD, #01H ;定时器0,方式1
MOV TH0, #0feH
MOV TL0, #00cH ;500us@12MHz
SETB TR0
SETB ET0
SETB EA
MOV R2, #4
SJMP $
T0_INT:
MOV TH0, #0feH
MOV TL0, #00cH ;500us@12MHz
CPL P1.0
CLR P1.1
DJNZ R2, T0_END
MOV R2, #4
SETB P1.1
T0_END:
RETI
END
温馨提示:答案为网友推荐,仅供参考