c2_7_1.asm

dsp入门与实践一书的源代码

 	       .def start
start:   
        mvk    	31,b0		
        ZERO   	A2	
        ZERO   	A3		
        MVKL   	0FFFEH,A4
        MVKLH  	0FFFFH,A4
        
        MVKL   	2,A0		
        MVKLH  	0,A0
        MVKL   	3,A1		
        MVKLH  	0,A1		
AQ:    
        SUBC   	A0,A1,A0
        EXTU 	A0,31,31,A2		
        AND  	A0,A4,A0
        SHL  	A3,1,A3
        ADD  	A3,A2,A3
        SUB    	B0,1,B0
   [b0]  B      AQ			
        NOP    	5
        SHL  	A3,1,A3		
        ADD  	A3,1,A3
        NOP
finish:   b 	finish