.include    spce061a.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=[P_IOB_Dir]           
    r1=0xff0c  
    [P_IOB_Dir]=r1 
	r1=0xff30 
	[P_IOB_Attrib]=r1       
	R1=0x000c 
	[P_Feedback]=r1	 
	RETF
	.ENDP   
//***************************************/ /
 .public _RunTime2Hz 
_RunTime2Hz:   .proc
	irq off
//	r1=[P_INT_Ctrl]
//	r1 = r1|0x0004;
   // [P_INT_Ctrl] = r1; 
   	r1 = [P_INT_Mask]				// 開啟IRQ4_4KHz中斷
	r1 |= 0x0004
	[P_INT_Mask] = r1
	INT FIQ,IRQ
   
    INT FIQ,IRQ;           //開中斷
    retf
.endp;                       

//****************************************//
 .public _TmbCount 
 _TmbCount:	.PROC
 	r1 =0
    [P_TimerA_Data]=r1
    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
    RETF
    .ENDP