system.asm

凌阳单片机之以太网通讯模组模组

.include hardware.inc


.code
//void  memset(void* addr,int value,unsigned int size);      

      
.PUBLIC _System_Initial
.CODE
_System_Initial: .PROC		
//		R1 = 0x0000 ;      
        R1 = 0x0098 
  	    [P_SystemClock] = R1;     	// Initial System Clock, 24MHz, Fcpu=Fosc		
      	R1 = 0x0000
        [P_TimeBase_Setup] = R1;	//
        R1 = 0xFFFF
        [P_IOA_Dir] = R1;			// Port IOA input		
		[P_IOA_Attrib] = R1;		//
		R1 = 0x0000;
		[P_IOA_Data] = R1;			//
//		R1 = 0xFFFF;
R1 = 0xc7ff;
		[P_IOB_Dir] = R1;			// Port IOB output
		[P_IOB_Attrib] = R1;		//
		R1 = 0x0000;
		[P_IOB_Data] = R1;			//
						        	  
		[P_TimerA_Ctrl] = R1;		//
		[P_TimerB_Ctrl] = R1;		//
						
		[P_TimerA_Data] = R1;		//
		[P_TimerB_Data] = R1;		//
//		[P_Watchdog_Clear] = R1;	//
        [P_UART_Command1] = R1;     //added by hs,2002.4.2
        [P_UART_Command2] = R1;     //added by hs,2002.4.2
             

        [P_INT_Ctrl] = R1;     		// set interrupt control                
        R1 = 0xFFFF ;
        [P_INT_Clear] = R1 ;      	// clear interrupt register 
        R1 = 0x0 ;  
        BP = SP 
        R1 = 0x2ff
        R2 = 0xAAAA
loop:
		[BP--] = R2        
		R1 = R1 -1
		JNZ  loop
		
_SpF_Init_HW_End:
        Int irq
        RETF;
        .ENDP;  

.ram
.public _hours,_mins,_secs,_hsec
.var  _hours,_mins,_secs,_hsec; 

//.external R_InterruptStatus
.code 
.public _F_InitRTC
_F_InitRTC: .proc
		r1 = 0;		
		[_hours] = r1;
		[_mins] = r1;
		[_secs] = r1;
		[_hsec] = r1;
	//	r1 = [R_InterruptStatus];
		r1 |= C_IRQ5_2Hz;
		[P_INT_Ctrl] = r1;
	//	[R_InterruptStatus] = r1;
		retf;
		.endp 
		
.external _nowt

.public _F_InitTcpTmr
_F_InitTcpTmr:  .proc
		 r1 = 0
         [_nowt] = r1
      //   r1 = [R_InterruptStatus]
         r1 |= C_IRQ6_TMB1
         [P_INT_Ctrl] = r1
      //   [R_InterruptStatus] = r1
         retf
         .endp		
		.end