//----------------------------------------------------------------
//	mysub.s		
//
//	This GNU assembly language file	defines a procedure which
//	can be called by a 16-bit program executing in real mode.
//	It advances the cursor to the beginning of the next line.
//
//	    assemble using:  $ as mysub.s -o mysub.o
//		
//	programmer: ALLAN CRUSE
//	written on: 02 MAY 2004
//----------------------------------------------------------------

	.code16
	.text
newline:
	pushaw
	push	%ds
	push	%es
	
	mov	$0x0F, %ah		# get display-page in BH
	int	$0x10

	mov	$0x03, %ah		# get cursor locn in DH,DL
	int	$0x10

	mov	%cs, %ax		# address this segment
	mov	%ax, %ds		#   with DS register
	mov	%ax, %es		#   also ES register

	lea	crlf, %bp		# offset of string
	mov	$2, %cx			# length of string
	mov	$0x07, %bl		# normal attribute
	mov	$0x1301, %ax		# write string
	int	$0x10

	pop	%es
	pop	%ds
	popaw	
	ret

crlf:	.ascii	"\n\r"

	.globl	newline