;/*************************************************************************
;*    函數(shù)原型: void delay(unsigned int count);
;*    功    能: 用軟件方法延時count個毫秒。  
;*************************************************************************/
name delay
public _delay
seg_delay segment code
rseg seg_delay
using 0
_delay: push acc
	        push ar5
	        mov a,r7
	        orl a,r6
	        jz  retmain
	one_ms: nop
	        nop
	        nop
	        mov r5,#246
here:	djnz r5,here
	        dec  r7
	        mov  a, r7
	        jnz  one_ms
	        orl  a, r6
	        jz   retmain
	        dec  r6
	        dec  r7
	        sjmp one_ms
	retmain:pop  ar5
	        pop  acc
	        ret
	end