dly2_5ms.inc

来自「PIC单片机指令集」· INC 代码 · 共 29 行

;-----------------------------------------------;
;						;
;	#INCLUDE <DLY2_5mS.INC>			;
;						;
;;	delay 2.5 msec				;
;;	for 16 MHz				;
;===============================================;
;
;	define RAM
;
	CBLOCK		
	 R0_DLY2_5mS, R1_DLY2_5mS
	ENDC
;
DLY2_5mS:	
	MOVLW 10		; 10*250uS=2.5mS
	MOVWF R1_DLY2_5mS
DLY2_5m1:
	MOVLW 250		; 250*1uS=250uS
	MOVWF R0_DLY2_5mS
DLY2_5m2:
	NOP			; 1ck
	DECFSZ R0_DLY2_5mS	; 1ck
	GOTO   DLY2_5m2		; 2ck(totaly 4 ck=1uS)
;
	DECFSZ R1_DLY2_5mS
	GOTO   DLY2_5m1
	RETURN