double_mul.asm

dsp实验箱的实验一:基本数学运算,dsp入门的好例子

	.def _double_mul
	.data
multi01: .word 08080h 
multi02: .word 08000h 
multi11: .word 08080h 
multi12: .word 08000h 
	.bss w0,1 
	.bss w1,1

.text
_double_mul:

	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 
	nop 
RET
.end