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/* Copyright (C) 2004 David Decotigny
Copyright (C) 1999 Free Software Foundation, Inc.
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; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.
*/
#ifndef _SOS_X86_VIDEOMEM_H_
#define _SOS_X86_VIDEOMEM_H_
/**
* @file x86_videomem.h
*
* On x86 PC platforms, the text mode screen memory (and CGA/EGA/VGA
* too) is mapped into physical memory. This file handles access to
* this screen, supposed to be set in text-mode, through this memory
* area. All the functions below print the characters directly to the
* memory, without interpreting the escaped characters (such as \n,
* \r...)
*/
#include <sos/errno.h>
/**
* x86 video attributes
* See http://webster.cs.ucr.edu/AoA/DOS/ch23/CH23-1.html
*/
/* Normal and Dark/Light foreground */
#define SOS_X86_VIDEO_FG_BLACK 0
#define SOS_X86_VIDEO_FG_DKGRAY 8
#define SOS_X86_VIDEO_FG_BLUE 1
#define SOS_X86_VIDEO_FG_LTBLUE 9
#define SOS_X86_VIDEO_FG_GREEN 2
#define SOS_X86_VIDEO_FG_LTGREEN 10
#define SOS_X86_VIDEO_FG_CYAN 3
#define SOS_X86_VIDEO_FG_LTCYAN 11
#define SOS_X86_VIDEO_FG_RED 4
#define SOS_X86_VIDEO_FG_LTRED 12
#define SOS_X86_VIDEO_FG_MAGENTA 5
#define SOS_X86_VIDEO_FG_LTMAGENTA 13
#define SOS_X86_VIDEO_FG_BROWN 6
#define SOS_X86_VIDEO_FG_YELLOW 14
#define SOS_X86_VIDEO_FG_LTGRAY 7
#define SOS_X86_VIDEO_FG_WHITE 15
/* Background */
#define SOS_X86_VIDEO_BG_BLACK (0 << 4)
#define SOS_X86_VIDEO_BG_BLUE (1 << 4)
#define SOS_X86_VIDEO_BG_GREEN (2 << 4)
#define SOS_X86_VIDEO_BG_CYAN (3 << 4)
#define SOS_X86_VIDEO_BG_RED (4 << 4)
#define SOS_X86_VIDEO_BG_MAGENTA (5 << 4)
#define SOS_X86_VIDEO_BG_BROWN (6 << 4)
#define SOS_X86_VIDEO_BG_LTGRAY (7 << 4)
/* Blinking */
#define SOS_X86_VIDEO_FG_BLINKING (1 << 7)
/** Setup the video RAM mapping and clear the screen */
sos_ret_t sos_x86_videomem_setup(void);
/** Clears the screen and set the background color as given by
attribute */
sos_ret_t sos_x86_videomem_cls(unsigned char attribute);
/** Print the string on the scren with the given attribute. Does not
handle scrolling */
sos_ret_t sos_x86_videomem_putstring(unsigned char row, unsigned char col,
unsigned char attribute,
const char *str);
/** Print the character on the scren with the given attribute. Does not
handle scrolling */
sos_ret_t sos_x86_videomem_putchar(unsigned char row, unsigned char col,
unsigned char attribute,
unsigned char c);
/**
* Print the formatted string. Very restricted version of printf(3):
* 1/ can print max 255 chars, 2/ supports only %d/%i, %c, %s, %x
* without any support for flag charachters (eg %08x).
*/
sos_ret_t sos_x86_videomem_printf(unsigned char row, unsigned char col,
unsigned char attribute,
const char *format, /* args */...)
__attribute__ ((format (printf, 4, 5)));
#endif /* _SOS_X86_VIDEOMEM_H_ */
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