.include    hardware.inc
.define		TIMERA_CLKA_EXT		 0x0007  
.define     TIMERA_CLKB_1        0x0030
//.define     P_INT_Ctrl_New       0x702d
         

.code
.public _Init_IOB
_Init_IOB: .PROC	
	
    //設置IOB2IOB3分別為EXT1和EXT2外部中斷，并寫入P_FeedBack口；
    //IOB2和IOB3分別設置未反相輸出，IOB4和IOB5分別設置為懸浮輸入           
    r1=0xff0c //0x000c  
    [P_IOB_Dir]=r1 
	r1=0xff30  
	[P_IOB_Attrib]=r1       
	R1=0x000c 
	[P_FeedBack]=r1	 
	RETF
	.ENDP   
//***************************************/ /
 

//****************************************//
 .public _TmbCount 
 _TmbCount:	.PROC
 	
    r1 = TIMERA_CLKA_EXT +TIMERA_CLKB_1  //設置定時器的時鐘源為clkA的外部時鐘源
    [P_TimerA_Ctrl]=r1   //開始計數
    r1 =0
    [P_TimerA_Data]=r1
   // r1=0x1004					 
    //[P_INT_Ctrl_New]=r1
    RETF
    .ENDP