单片机8253多路定时/计数器课程设计。答:假设8253的端口地址为100H-103H INIT_8253 PROC MOV DX,103H MOV AL,00010110B OUT DX,AL MOV AL,02H MOV DX,100H OUT DX,AL MOV DX,103H MOV AL,00010110B OUT DX,AL MOV AL,04H MOV DX,101H OUT DX,AL MOV DX,103H MOV AL,00010110B OUT DX,AL MOV AL,08H MOV DX,102H OU...