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/*
* vga.h: definitions of and supports functions for VGA
*
* Copyright (c) 2006-2010, Intel Corporation
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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
* COPYRIGHT OWNER OR CONTRIBUTORS 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.
*
*/
#ifndef __VGA_H__
#define __VGA_H__
#define VGA_BASE 0xb8000
/* 80*25 text mode*/
#define MAX_LINES 25
#define MAX_COLS 80
#define SCREEN_BUFFER (MAX_LINES*MAX_COLS*2)
#define VGA_ADDR(x, y) (VGA_BASE + 2*(MAX_COLS*(y) + (x)))
/* registers */
#define CTL_ADDR_REG 0x3D4
#define CTL_DATA_REG 0x3D5
#define START_ADD_HIGH_REG 0x0C
#define START_ADD_LOW_REG 0x0D
/* colors */
#define COLOR_BLACK 0x00
#define COLOR_BLUE 0x01
#define COLOR_GREEN 0x02
#define COLOR_CYAN 0x03
#define COLOR_RED 0x04
#define COLOR_MAGENTA 0x05
#define COLOR_BROWN 0x06
#define COLOR_LTGRAY 0x07
#define COLOR_DKGRAY 0x08
#define COLOR_LTBLUE 0x09
#define COLOR_LTGREEN 0x0A
#define COLOR_LTCYAN 0x0B
#define COLOR_LTRED 0x0C
#define COLOR_LTMAGENTA 0x0D
#define COLOR_LTBROWN 0x0E
#define COLOR_WHITE 0x0F
#define COLOR ((COLOR_BLACK << 4) | COLOR_LTGRAY)
void vga_init(void);
void vga_puts(const char *s, unsigned int cnt);
#endif /* __VGA_H__ */
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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