1/* -*- c -*- ------------------------------------------------------------- *
2 *
3 *   Copyright 2004-2005 Murali Krishnan Ganapathy - All Rights Reserved
4 *
5 *   This program is free software; you can redistribute it and/or modify
6 *   it under the terms of the GNU General Public License as published by
7 *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
8 *   Boston MA 02111-1307, USA; either version 2 of the License, or
9 *   (at your option) any later version; incorporated herein by reference.
10 *
11 * ----------------------------------------------------------------------- */
12
13#ifndef __COM32IO_H__
14#define __COM32IO_H__
15
16#include <com32.h>
17#include <stdio.h>
18#include <libansi.h>
19
20#ifndef NULL
21#define NULL ((void *)0)
22#endif
23
24/* Bits representing ShiftFlags, See Int16/Function 2 or Mem[0x417] to get this info */
25
26#define INSERT_ON     (1<<7)
27#define CAPSLOCK_ON   (1<<6)
28#define NUMLOCK_ON    (1<<5)
29#define SCRLLOCK_ON   (1<<4)
30#define ALT_PRESSED   (1<<3)
31#define CTRL_PRESSED  (1<<2)
32// actually 1<<1 is Left Shift, 1<<0 is right shift
33#define SHIFT_PRESSED (1<<1 | 1 <<0)
34
35/* BIOS Assisted output routines */
36
37void getpos(char *row, char *col, char page);
38
39char inputc(char *scancode);	// Return ASCII char by val, and scancode by reference
40
41void setcursorshape(char start, char end);	// Set cursor shape
42void getcursorshape(char *start, char *end);	// Get shape for current page
43
44// Get char displayed at current position in specified page
45unsigned char getcharat(char page);
46
47static inline unsigned char readbiosb(unsigned int ofs)
48{
49    return *((unsigned char *)MK_PTR(0, ofs));
50}
51
52static inline char getshiftflags(void)
53{
54    return readbiosb(0x417);
55}
56
57void scrollupwindow(char top, char left, char bot, char right, char attr, char numlines);	//Scroll up given window
58
59void setvideomode(char mode);	// Set the video mode.
60
61static inline char getvideomode(void)	// Get the current video mode
62{
63    return readbiosb(0x449);
64}
65
66#endif
67