io.asm

应用案例

IO SEGMENT CODE

PUBLIC    _WriteIO,_ReadIO

rseg   IO
_WriteIO:
		 mov	A,	r7
		 MOV    R0, A
		 mov	a,	r5
		 movX	@R0,a
		 ret

_ReadIO:
		 mov    A, r7
		 MOV    R0, A
		 movX	a,  @R0
		 mov	r7, A
		 ret
		 end