zhao5.asm

这里面有很多dsp应用程序源码

*************************************************
*						*
*	用双操作数指令方案实现			*
*	y=(a1*x1+a2*x2+···a19*x19+a20*x20)      *
*						*
*************************************************	
	.title	"zhao4.asm"
	.mmregs
STACK	.usect	"STACK",30H
	.bss	a,20
	.bss	x,20
	.bss	y,2
	.data
table:	.word	1,2,3,4,5,6,7,8,9,10,11
	.word	12,13,14,15,16,17,18,19,20
	.word	21,22,23,24,25,26,27,28
	.word	29,30,1,2,3,4,5,6,7,8,9,10
	.def start
	.text
start:	STM	#a,AR1
	RPT	#39
	MVPD	table,*AR1+
	LD	#0,B
	STM	#a,AR2
	STM	#x,AR3
	STM	#19,BRC
	RPTB	done-1
	MPY	*AR2+,*AR3+,A	;双操作数指令
	ADD	A,B
done:	STH	B,*(y)
	STL	B,*(y+1)
end:	B	end
	.end