89C51控制步进电机汇编程序答:CJNE R1,#0AH,A1 RET SHOW2:MOV DPTR,#TAB2 MOV R1,#00H A2: MOV A,R1 MOVC A,@A+DPTR MOV LCD,A MOV R6,A LCALL WRITE_D INC R1 CJNE R1,#0AH,A2 RET ;写数据子程序 WRITE_D: SETB RS CLR RW MOV LCD,R6 CLR E ACALL CHECK_BF SETB E RET ;写命令子程序 WRITE_...
定时器0控制数码管显示单片机的汇编程序?答:ORG 0030H START:MOV SP,#60H MOV TMOD,#01H MOV TH0,#4CH MOV TL0,#00H MOV R7,#00H MOV R6,#00H SETB ET0 SETB EA SETB TR0 MOV DPTR,#TAB MAIN:MOV A,R6 MOVC A,@A+DPTR MOV P1,A LJMP MAIN INTERRUPT_T0:MOV TH0,#4CH MOV TL0,#00H INC R7 CJNE R7,#20,LOOP1 ...