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/*
* crt.h - This file contains definitions for constants related to PC console.
* More information can be found at
* <http://millenium.atcg.com/~taco/helppc/tables.html>
*
* Copyright (C) 1998 Eric Valette (valette@crf.canon.fr)
* Canon Centre Recherche France.
*
* The license and distribution terms for this file may be
* found in found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#ifndef _CRT_H
#define _CRT_H
/*
* Bitmap video origins in text mode.
*/
/* In monochrome */
#define V_MONO 0xb0000
/* In color */
#define V_COLOR 0xb8000
/*
* Video Option Byte location. It must be maintained
* by the BIOS.
*/
#define VIDEO_MODE_ADDR 0x449
/*
* Video controller base IO address location in
* BIOS data area
*/
#define DISPLAY_CRT_BASE_IO_ADDR 0x463
/*
* Number of collums and lines locations for the
* actual video Configuration
*/
#define NB_MAX_COL_ADDR 0x44a
#define NB_MAX_ROW_ADDR 0x484
/*
* Miscellaneous information set by the BIOS in offset video_mode,
*/
# define VGAMODE7 0x7 /* VGA mode 7 */
/* Color codes in text mode for background and foreground. */
#define BLACK 0x0
#define BLUE 0x1
#define GREEN 0x2
#define CYAN 0x3
#define RED 0x4
#define MAGENTA 0x5
#define BROWN 0x6
#define WHITE 0x7
#define GRAY 0x8
#define LT_BLUE 0x9
#define LT_GREEN 0xa
#define LT_CYAN 0xb
#define LT_RED 0xc
#define LT_MAGENTA 0xd
#define YELLOW 0xe
#define LT_WHITE 0xf
#define BLINK 0x8 /* Mask used to determine blinking */
#define OFF 0
#define ON 1
/*
* CRT Controller register offset definitions
*/
# define CC_CURSSTART 0x0a /* Cursor start scan line */
# define CC_CURSEND 0x0b /* Cursor end scan line */
# define CC_STARTADDRHI 0x0c /* start video ram addr msb */
# define CC_STARTADDRLO 0x0d /* start video ram lsb */
# define CC_CURSHIGH 0x0e /* Cursor high location (8 msb) */
# define CC_CURSLOW 0x0f /* Cursor low location (8 msb) */
# define CC_VRETSTART 0x10 /* vertical synchro start lsb */
# define CC_VRETEND 0x11 /* vertical syn end (also it control) */
# define CC_VDISPEND 0x12 /* vertical display end lsb register */
#endif /* _CRT_H */
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