/*	$NetBSD: consio.s,v 1.1.1.1 1996/02/29 11:36:12 leo Exp $	*/

/*
 * Copyright (c) 1995 Waldi Ravens.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by Waldi Ravens.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

	.globl	_getchar	| int getchar (void);
	.text
	.even
_getchar:
	movml	d2/a2,sp@-
	movw	#2,sp@-		| BIOS device 2 => console (VT52)
	movw	#2,sp@-		| BIOS opcode 2 => Bconin
	trap	#13		| => char in d0.b
	addql	#4,sp
	andl	#0xff,d0
	movml	sp@+,d2/a2
	rts

	.globl	_putchar	| void putchar (int c);
	.text
	.even
_putchar:
	movl	sp@(4),d0
	cmpw	#10,d0		| linefeed?
	bnes	0f
	movq	#13,d0		| yes, put CR and LF.
	bsrs	0f
	movq	#10,d0
0:	movml	d2/a2,sp@-
	movw	d0,sp@-		| character
	movw	#2,sp@-		| BIOS device 2 => console (VT52)
	movw	#3,sp@-		| BIOS opcode 3 => Bconout
	trap	#13		| => none
	addql	#6,sp
	movml	sp@+,d2/a2
	rts