1 /* $NetBSD: consio.s,v 1.1.1.1 1996/02/29 11:36:12 leo Exp $ */
4 * Copyright (c) 1995 Waldi Ravens.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Waldi Ravens.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 #include <machine/asm.h>
35 ENTRY_NOPROFILE(getchar) | int getchar (void);
37 movw #2,%sp@- | BIOS device 2 => console (VT52)
38 movw #2,%sp@- | BIOS opcode 2 => Bconin
39 trap #13 | => char in d0.b
45 ENTRY_NOPROFILE(putchar) | void putchar (int c);
47 cmpw #10,%d0 | linefeed?
49 movq #13,%d0 | yes, put CR and LF.
52 0: movml %d2/%a2,%sp@-
53 movw %d0,%sp@- | character
54 movw #2,%sp@- | BIOS device 2 => console (VT52)
55 movw #3,%sp@- | BIOS opcode 3 => Bconout