c2_4_1.asm

dsp入门与实践一书的源代码

		 	.file "chenfa.asm" 
		 	.mmregs    
		 	.data 
		 	.global multi01	
multi01:  	.word 	8080h
		 	.global	multi02
multi02: 	.word 	08000h 	
		 	.global multi11	
multi11: 	.word 	08080h 
		 	.global multi12		
multi12: 	.word 	08000h  
		 	.global w0		
w0:      	.word 	0000h  		
		 	.global w1				
w1:      	.word 	0000h     
 
         	.text
         	stm 	#multi02,ar2		
         	stm 	#multi12,ar3	
         	stm 	#w0,ar4	
         	ld  	#0,a		
         	macsu 	*ar2,*ar3-,a	
         	ld  	a,-16,a	
         	macsu 	*ar2-,*ar3+,a 	
         	macsu 	*ar3-,*ar2,a
         	ld  	a,-16,a 				
         	mac 	*ar2,*ar3,a 
         	ld  	a,1,a
         	sth 	a,*ar4+	
         	stl 	a,*ar4		
over:    	b   	over