sz.asm

一个本人编写的时钟程序

  LED1        BIT  p1.3
  LED2        BIT  p1.4
  LED3        BIT  p1.6
  LED4        BIT  p1.7
  LED2DZ      BIT  P1.5

  LS164_AB    BIT  p3.0
  LS164_CLK   BIT  p3.1

  KEY1      BIT  p3.5
  KEY2      BIT  p3.7

  BEEP   BIT  p1.0


		ORG  0000h
		JMP  MAIN
		ORG  0100h
MAIN:

INIT:
        MOV  SP,#50H
        CLR	 LS164_AB
		CLR  LS164_CLK
		MOV	 65H,#3
		CLR  LED2

		LCALL DISP

		LCALL KEYINPUT


        JMP     $

DISP:
	;	MOV    SCON,#00H
	  ;  MOV	   R1,4
	 	MOV    R0,#65H
	 	MOV    DPTR,#SAG_LED234

		MOV    A,@R0
	 	MOVC   A,@A+DPTR
	;	DEC    R0
	;	DJNZ   R1,LOOP
	;	MOV	   SBUF,A
;DELAY:  JNB  TI,DELAY
;		CLR    TI

Send2LS164:
		MOV	R1,#8
Send2LS164_Loop:
		RLC  A
	    MOV  LS164_AB,C
	    SETB LS164_CLK
	    CLR  LS164_CLK
	    DJNZ r1,Send2LS164_Loop
RET


KEYINPUT:
	;	  JB  KEY1,
		  RET




LED_SELECT:





SAG_LED1: ;LED1段码
DB  01010000b,11111001b,00110100b,10110000b,10011001b,10010010b,00010010b,11111000b,00010000b,10010000b,0ffh
SAG_LED234: ;LED234段码
DB  11000000b,11111001b,10100100b,10110000b,10011001b,10010010b,10000010b,11111000b,10000000b,10010000b,0ffh
  ;  0         1         2         3         4         5         6         7         8         9

               END