ex01.asm

这是一份学习DSP很有价值的PDF格式的课件

***DSP指令实验***


		.title 	"ex1"
		.mmregs
		.def _c_int00

ExNo	.SET 	00H
DAT0	.SET	01H
DAT1	.SET	02H
DAT2	.SET	03H
		.data
buff	.space 100h*16

		.text
ADD3	.MACRO P1,P2,P3,ADDRP		;三数相加宏定义: ADDRP = P1 + P2 + P3
		LD P1,A
		ADD P2,A
		ADD P3,A
		STL A,ADDRP
		.ENDM		
		
_c_int00:
		B start
        
start:	LD #020h,DP					;置数据页指针
		STM #3000h,SP				;置堆栈指针
		SSBX INTM					;禁止中断
		ST	#0001H,ExNo
		nop
		nop
		nop
		
bk0:	ST #0012h,DAT0
		LD #0023h,A
		ADD DAT0,A					;加法操作: A = A + DAT0
		STL	A,DAT0
		NOP		
		NOP
		NOP
		NOP

bk1:	ST #0054h,DAT0
		LD #0002h,A
		SUB DAT0,A					;减法操作: A = A - DAT0
		STL	A,DAT0
		NOP
		NOP
		NOP
		NOP

bk2:	ST #0345h,DAT0
		STM #0002h,T
		MPY DAT0,A					;乘法操作: A = DAT0 * T
		STL	A,DAT0
		NOP
		NOP
		NOP
		NOP

bk3:	ST #1000h,DAT0
		ST #0041h,DAT1
		RSBX SXM					;无符号除法操作: DAT0 ÷ DAT1 ;   结果:  DAT2:商;DAT3:余数
		LD DAT0,A
		RPT #15
		SUBC DAT1,A
		STL A,DAT2
		STH A,DAT0
		NOP
		NOP
		NOP
		NOP

bk4:	ST #0333h,DAT0
		SQUR DAT0,A					;平方操作: A = DAT0 * DAT0
		STL	A,DAT0
		NOP
		NOP
		NOP
		NOP

bk5:	ST #0034h,DAT0
		ST #0243h,DAT1
		ST #1230h,DAT2
		ADD3 DAT0,DAT1,DAT2,DAT0    ;三数相加操作: DAT0 = DAT0 + DAT1 + DAT2
		NOP
		NOP
		NOP
		NOP

bk6:	B bk0						;循环执行
		.end