dly40ms.inc

来自「PIC单片机指令集」· INC 代码 · 共 29 行

;-----------------------------------------------;
;						;
;#INCLUDE <DLY40mS.INC>				;
;						;
;;	delay 40 msec				;
;;	for 16 MHz				;
;===============================================;
;
;	define RAM
;
	CBLOCK		
	 R0_DLY40mS, R1_DLY40mS
	ENDC
;
DLY40mS:	
	MOVLW 200		; 200*200uS=40mS
	MOVWF R1_DLY40mS
DLY40mS1:
	MOVLW 200		; 200*1uS=200uS
	MOVWF R0_DLY40mS
DLY40mS2:
	NOP			; 1ck
	DECFSZ R0_DLY40mS	; 1ck
	GOTO   DLY40mS2		; 2ck(totaly 4 ck=1uS)
;
	DECFSZ R1_DLY40mS
	GOTO   DLY40mS1
	RETURN