timer.asm

dsp2407源程序

			.include  "F2407REGS.H" 		
			.def      _c_int0

			.sect	".vectors"				
RSVECT			B    _c_int0			
INT1	  		B    PHANTOM			
INT2	  		B    GISR2				
INT3	  		B    PHANTOM			
INT4	  		B    PHANTOM			
INT5	  		B    PHANTOM			
INT6	  		B    PHANTOM			
RESERVED  	B    PHANTOM
SW_INT8   	B    PHANTOM

SW_INT31  	B    PHANTOM


			.sect	".pvecs"
PVECTORS	B	PHANTOM		
			B	PHANTOM		
            .space 23*16
			B	PHANTOM		
			B	T1PINT_ISR	
			B	PHANTOM		

			B	PHANTOM		

         	.text
_c_int0    
		SETC 	INTM
       	CLRC 	SXM
       	CLRC 	OVM
		CLRC 	CNF
       	LDP 	#0E0H
       	SPLK 	#83FEH, SCSR1   		;CLKIN=20M, CLKOUT=40M,use 2407A
       	SPLK	#0E8H, WDCR		
       	LDP		#0
		SPLK	#02H, IMR		
		SPLK	#0FFFFh, IFR	
		LDP		#DP_EVA			
		SPLK	#80H, EVAIMRA	
		SPLK	#0FFFFh, EVAIFRA
		SPLK	#0, GPTCONA
		SPLK	#177H, T1PR		
		SPLK	#0, T1CNT
		SPLK	#0164CH, T1CON	
								
								
		CLRC	INTM			
WAIT:	NOP
		B		WAIT

GISR2:	
      LDP #0E0H
      LACC PIVR,1
      ADD #PVECTORS
      BACC						
		;	只设置一个中断时...
T1PINT_ISR:					
		LDP			#DP_EVA	
		SPLK		#0, T1CNT
GISR2_RET:					
;		
		LDP		#0E8H
		LACL	EVAIFRA
		SACL	EVAIFRA
		CLRC	INTM
		RET

PHANTOM 	
KICK_DOG			
		RET
		END