main.asm

这里面有很多dsp应用程序源码

;ZY13DSP12BD CONTROL Digital LED
;Mr Li Xiao Bei 
;Hu Bei Zhong You
;2004.4.16
;KEY
;======================== main.asm =========================
;       
		.mmregs
		.def _c_int00
		.include c54.inc
		.ref c54init
		.def Get_KeyValue
		;数码管地址
Digital0	.set 0x0010
Digital1	.set 0x0011
Digital2	.set 0x0012
Digital3	.set 0x0013
Digital4	.set 0x0014
Digital5	.set 0x0015
Digital6	.set 0x0016
Digital7	.set 0x0017
		;按键地址
Key			.set 0x0001
		.data
DATA:	.word 80FCH,8060H,80DAh,80F2h,8066H,80B6H,80BEH,80E0H,80FEH		;显示段码数据	
		;设置按键偏移量
        .bss	key_p,1
        .sect  "progsys"
        .align  0x10
_c_int00:    
        STM #0x0f80,SP           	
		CALL c54init
		LD #DATA ,DP
LOOP:		

		LD		#DATA,A
	    ADD		key_p,A
	    STLM     A,AR1
		PORTW	*AR1,Digital7
		CALL	Delay
		B		LOOP
Delay:		
		
		STM 	#999,AR3	         ;循环次数1000
LOOP1:	
        STM		#9, AR2	             ;循环次数10
LOOP2:	
    	BANZ	LOOP2,*AR2-	         ;如果AR2不等于0，AR2减1，再判断
		BANZ	LOOP1,*AR3-	         ;如果AR1不等于0，AR1减1,跳转到LOOP1
		RET		
**********ISR Get KeyValue*************
Get_KeyValue:
		PSHM AL
		PSHM AH
		PSHM AG
		PSHM AR2
		PSHM AR3
*Read KeyValue
        PORTR Key,@(key_p)
        STM	 #0FFH,IFR
        STM  #0x0002,IMR	
        RSBX INTM
        POPM AR3
		POPM AR2
		POPM AG
		POPM AH
		POPM AL
		RET
						
        .end