键盘.txt

里面是比较经典的汇编例子程序

	.mmregs
	.global	_main
	.text
_main:	;STM #0,CLKMD
clkcon: stm #2000h,sp
        STM #0x7FFF,SWWSR

dm1:	
			
			nop
			nop
			portr 00h,ar3
			nop
			nop
			portw ar3,00h
			nop
			nop
			b dm1      

    .end