ex02.asm

这是一份学习DSP很有价值的PDF格式的课件

***存储器实验***

		.title 	"ex02"
		.global reset,_c_int00
		.mmregs
		.def _c_int00
		
ExNo	.set 	00h
DAT0	.set	01H
DAT1	.set	02H
DAT2	.set	03H
DAT3	.set	04H
DDAT0	.set	1004H
DDAT1	.set	1005H
DDAT2	.set	1006H
DDAT3	.set	1007H
PDAT0	.set	1f00H
PDAT1	.set	1f01H
PDAT2	.set	1f02H
PDAT3	.set	1f03H

		.sect ".vectors"			;中断向量表
reset:	B _c_int00					;复位向量
		NOP
		NOP
		.space 4*126
		
		.text

DELAY	.macro COUNT

		STM COUNT,BRC
		RPTB delay?
		NOP
		NOP
		NOP
		NOP
delay?:	NOP
		.endm


_c_int00:
		LD #020h,DP					;置数据页为1000h~107Fh
		STM #3000h,SP				;置堆栈指针
		SSBX INTM					;禁止中断
		stm		#00a8h,PMST				;改变中断向量映射到0x0080
		ST	#0002h,ExNo
		nop
		nop
		nop
			
bk1:	ST #1234h,DAT0				;立即数寻址
		ST #5678h,*(DDAT1)
		NOP
		NOP
		NOP
		
bk2:	MVDK DAT0,DDAT0				;绝对地址(dmad)寻址
		MVKD DDAT1,DAT1
		NOP
		NOP
		NOP
		
bk3:	MVDP DAT0,PDAT0				;绝对地址(pmad)寻址
		MVDP DAT1,PDAT1
		NOP
		NOP
		NOP
		
bk4:	LD #PDAT1,A					;累加器寻址
		READA DAT2
		NOP
		NOP
		NOP
		
bk5:	ST #3210h,DAT3				;直接寻址(DP指针)
		NOP
		NOP
		NOP
		
bk6:	SSBX CPL
		NOP
		NOP
		NOP
		ST #9876h,DAT3				;直接寻址(SP指针)
		NOP
		NOP
		NOP
		RSBX CPL
		NOP
		NOP
		NOP
		
bk7:	STM #DDAT3,AR0				;间接寻址
		ST #9876h,*AR0
		NOP
		NOP
		NOP

bk8:	STM #8888h,T				;存储器映射寄存器寻址
		NOP
		NOP
		NOP

bk9:	PSHM T						;堆栈寻址
		POPM T
		NOP
		NOP
		NOP

bk10:	STM #4000h,AR0				;程序存储器到数据存储器的复制
		RPT #100h
		MVPD 1000H,*AR0+
		NOP
		NOP
		NOP
		
bk11:	B _c_int00
		.end