led_main.asm

直流电机闭环控制实验,DSP试验。THRS-2试验箱

;--------------------------------------------------------------------------------
; File Name:led.asm
; Designer: Jzming
; Description: This program is desiged to drive the led.
; Date:2004.12.17
; System resource:
;--------------------------------------------------------------------------------
;--------------------------------------------------------------------------------



;--------------------------------------------------------------------------------	
	.mmregs
	.global 	_led
	.global _rc;
	.bss  _rc,1
	.bss  buff,1
	 
	
;--------------------------------------------------------------------------------
	

   
_led:							;主程序入口
    stm #400,sp
    ld #2,a   
    stl a,*(_rc)
    ld  *(_rc),a
	add #dis_addr,a
	stl a,*(buff)
    nop
    nop
    nop

    portw  *(buff),800fh
    nop
    nop


    ret
;-------------------------------------------------------------------------------
		
;-------------------------------------------------------------------------------

;-------------------------------------------------------------------------------	
		.text

dis_addr:
		.word	003fH            		;"0"
		.word   0006H            		;"1"
		.word   005BH            		;"2"
		.word   004FH            		;"3"
		.word   0066H            		;"4"
		.word   006DH            		;"5"
		.word   007DH            		;"6"
		.word   0007H            		;"7"
		.word   007FH            		;"8"
		.word   006FH            		;"9"
		.word   0077H            		;"A"
		.word   007CH            		;"B"
		.word   0039H            		;"C"
		.word   005EH            		;"D"
		.word   0079H            		;"E"
		.word   0071H            		;"F"" 
		.end