/* $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