serio.a96

intel 196nt 例程

SERIO	MODULE
$include(_SFR_INC_)

	rseg
	extrn	PLMREG
	;; Define a few registers for our own purpose
	;; Note that these are not the same as the TMPREG0
	;; used for C programs.
Tmp0:	dsw	1
Tmp0L	equ	Tmp0:BYTE
Tmp2:	dsw	1


	cseg far
	;; int get_sp_status(void);
	public	get_sp_status
get_sp_status:
	ldb	PLMREG,sp_status
	ret

	;; int put_byte(int b);
	public	put_byte
put_byte:
	ld	Tmp0,4[sp]			       ; 4 => offset of first parameter
	stb	Tmp0L,sbuf_tx[0]
	ret
	END