1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/* -*- c -*- ------------------------------------------------------------- *
*
* Copyright 2004-2005 Murali Krishnan Ganapathy - All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, Inc., 53 Temple Place Ste 330,
* Boston MA 02111-1307, USA; either version 2 of the License, or
* (at your option) any later version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
#ifndef __COM32IO_H__
#define __COM32IO_H__
#include <com32.h>
#ifndef NULL
#define NULL ((void *)0)
#endif
/* BIOS Assisted output routines */
void cswprint(const char *str, char attr, char left);
// Print a C str (NUL-terminated) respecting the left edge of window
// i.e. \n in str will move cursor to column left
// Print a C str (NUL-terminated)
static inline void csprint(const char *str, char attr)
{
cswprint(str,attr,0);
}
void cprint(char chr,char attr,unsigned int times, char disppage); // Print a char
void setdisppage(char num); // Set the display page to specified number
char getdisppage(); // Get current display page
void gotoxy(char row,char col, char page);
void getpos(char * row, char * col, char page);
char inputc(char * scancode); // Return ASCII char by val, and scancode by reference
static inline void putch(char x, char attr, char page)
{
cprint(x,attr,1,page);
}
void setcursorshape(char start,char end); // Set cursor shape
void getcursorshape(char *start,char *end); // Get shape for current page
// Get char displayed at current position in specified page
unsigned char getcharat(char page);
static inline void cursoroff(void) /* Turns off cursor */
{
setcursorshape(32,33);
}
static inline void cursoron(void) /* Turns on cursor */
{
setcursorshape(6,7);
}
static inline unsigned char readbiosb(unsigned int ofs)
{
return *((unsigned char *)MK_PTR(0,ofs));
}
static inline char getnumrows()
{
return readbiosb(0x484); // Actually numrows - 1
}
static inline char getnumcols(void)
{
return readbiosb(0x44a); // Actually numcols
}
static inline char getshiftflags(void)
{
return readbiosb(0x417);
}
void scrollupwindow(char top, char left, char bot,char right,char attr,char numlines); //Scroll up given window
static inline void scrollup(void) //Scroll up display screen by one line
{
scrollupwindow(0,0,getnumrows(),getnumcols(),0x07,1);
}
void setvideomode(char mode); // Set the video mode.
static inline char getvideomode(void) // Get the current video mode
{
return readbiosb(0x449);
}
unsigned char sleep(unsigned int msec); // Sleep for specified time
void beep(); // A Bell
unsigned char checkkbdbuf(); // Check to see if there is kbd buffer is non-empty?
static inline void clearkbdbuf() // Clear the kbd buffer (how many chars removed?)
{
while (checkkbdbuf()) inputc(NULL);
}
#endif
|
