ex2.asm

DSP的实验测设程序

************************************************
* FileName:		ex2.asm                        *
* Description:	数据存储器和程序存储器实验     *
* Copyright(C) SanZhi Electronic, Author Zpin  *
************************************************

		.title 	"ex2"
		.global reset,_c_int00
		.mmregs
		.def _c_int00

DAT0	.set	00H
DAT1	.set	01H
DAT2	.set	02H
DAT3	.set	03H
DDAT0	.set	2004H
DDAT1	.set	2005H
DDAT2	.set	2006H
DDAT3	.set	2007H
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 #40h,DP					;置数据页为2000h~207Fh
		STM #3000h,SP				;置堆栈指针
		SSBX INTM					;禁止中断
		STM #07FFFh,SWWSR			;置外部等待时间
		
bk0:	SSBX XF						;置XF以实现二极管闪烁
		DELAY #0FFFFh
		RSBX XF
		DELAY #0FFFFh
		SSBX XF
		DELAY #0FFFFh
	 	;b bk0
		
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