mem.asm

DSP的汇编程序

		.include  "F2407REGS.H"		;引用头部文件
		.def      _c_int0

        .data
        
RSV:	    .word 0	
TABLE:		.word 00c0h, 00f9h, 00a4h, 00b0h, 0099h, 0092h, 0082h, 00f8h
			.word 0080h, 0090h, 0088h, 0083h, 00c6h, 00a1h, 0086h, 008eh  
SEG_ON:		.word 0000h			
SEG_OFF:	.word 0001h
TEMP:		.word 0		
COUNT:		.word 100	
        
		.text                                      
		
SEG7_DATA .set  8001h

SEG0_EN	.set	8002h
SEG1_EN	.set	8003h
SEG2_EN	.set	8004h
SEG3_EN	.set	8005h
SEG4_EN	.set	8006h
SEG5_EN	.set	8007h
SEGS_CNT .set   6h    

LOOP_CNT .set   50   

DAT8	.set	8

_c_int0    							;相当于主程序的入口
		CALL	SYSINIT 			;调系统初始化程序   
		
		LDP     #DP_B01            
		OUT	    SEG_ON, SEG0_EN     ;IO 指令
		OUT	    SEG_ON, SEG1_EN
		OUT	    SEG_ON, SEG2_EN
		OUT	    SEG_ON, SEG3_EN
		OUT	    SEG_ON, SEG4_EN
		OUT	    SEG_ON, SEG5_EN    
		OUT	    TABLE, SEG7_DATA
		NOP							;此处检查数码管的显示情况
		
		LDP		#RSV                
		SPLK	#1234H, TEMP        ;数据存储指令
		NOP							;此处检查TEMP的显示情况      
		
		LDP		#6
		BLDD 	#300h,200H
		NOP			         
		
		BLPD 	#800h,00h
		
		DMOV 	DAT8         
		SPLK 	#7FFFh,DAT8
		TBLR 	DAT8
		TBLW 	DAT8    
		
LOOP:   NOP
		B 		LOOP		

*系统初始化程序*

SYSINIT:
		SETC 	INTM
		CLRC 	SXM
		CLRC 	OVM
		CLRC 	CNF					;B0 被配置为数据存储空间
		LDP 	#0E0H
		SPLK 	#81FEH, SCSR1  		;CLKIN=6 M, CLKOUT=24 M 
		SPLK	#0E8H, WDCR			;不使能WDT
		LDP		#0
		SPLK	#0000H, IMR			;不使能
		SPLK	#0FFFFH, IFR		;清全部中断标志
		RET
		
*软件延时程序*

DELAY:
		MAR 	*,   AR4
		LAR		AR4, #0800H
		LAR		AR0, #00H
		
DELAY1: SBRK	#1
		NOP
		CMPR	00
		BCND	DELAY1, NTC  
		  
		RET                   
		
		END