di..di..asm

来自「做文字显示的」· 汇编 代码 · 共 34 行

T02SA	EQU 30H 
T02SB	EQU 31H 
FLAG	BIT 00H 
			ORG 00H 
			LJMP START 
			ORG 0BH 
			LJMP INT_T0 
START:	MOV T02SA,#00H 
			MOV T02SB,#00H 
			CLR FLAG 
			MOV TMOD,#01H 
			MOV TH0,#(65536-500) / 256 
			MOV TL0,#(65536-500) MOD 256 
			SETB TR0 
			SETB ET0 
			SETB EA 
			SJMP $ 
INT_T0: 
			MOV TH0,#(65536-500) / 256 
			MOV TL0,#(65536-500) MOD 256 
			INC T02SA 
			MOV A,T02SA 
			CJNE A,#100,NEXT 
			INC T02SB 
			MOV A,T02SB 
			CJNE A,#04H,NEXT 
			MOV T02SA,#00H 
			MOV T02SB,#00H 
			CPL FLAG 
NEXT:	JB FLAG,DONE 
			CPL P1.0 
DONE:	RETI 
			END