initpara.asm

基于80C51的一个例子程序,实现了流水灯操作

; 初始化各参数

         PROC  INIT_PARA,INIT_TIMER0

TIMER0_VAL   EQU    20000

INIT_PARA:
                MOV TH0,#HIGH(65536-TIMER0_VAL)
                MOV TL0,#LOW(65536-TIMER0_VAL)
                RET

INIT_TIMER0:
               PUSH A
               PUSH B
               PUSH DPL
               PUSH DPH
               PUSH PSW
                    MOV PSW,#08H
                    MOV TH0,#HIGH(65536-TIMER0_VAL)
                    MOV TL0,#LOW(65536-TIMER0_VAL)
               POP PSW
               POP DPH
               POP DPL
               POP B
               POP A
               RET

         END