t060.asm

来自「汇编语言开发的各种实用程序」· 汇编 代码 · 共 48 行

        ORG  0000H
		LJMP MAIN
		ORG  0100H
MAIN:
   
SECOND  EQU    30H
TCOUNT  EQU    31H

START:  
        MOV   SECOND,#00H
		MOV   TCOUNT,#00H
		MOV   TMOD,#01H
		MOV   TH0,#(65536-50000)/256
		MOV   TL0,#(655536-50000) MOD 256
		SETB  TR0

DISP:   MOV   A,SECOND
        MOV   B,#10
		DIV   AB
		MOV   DPTR,#TABLE
		MOVC  A,@A+DPTR
		MOV   P0,A
		MOV   A,B
		MOV   DPTR,#TABLE
		MOVC  A,@A+DPTR
		MOV   P2,A

WAIT:   JNB   TF0,WAIT
        CLR   TF0
		MOV   TH0,#(65536-50000)/256
		MOV   TL0,#(655536-50000) MOD 256
		INC   TCOUNT
		MOV   A,TCOUNT
		CJNE  A,#20,WAIT
		MOV   TCOUNT,#00H
		INC	  SECOND
		MOV   A,SECOND 
		CJNE  A,#60,DISP
		MOV   SECOND,#00H

TABLE:  DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH 

        END