source: rtems/c/src/lib/libbsp/i386/pc386/include/crt.h @ 941f6f3

4.104.114.84.95
Last change on this file since 941f6f3 was 941f6f3, checked in by Joel Sherrill <joel.sherrill@…>, on May 21, 1998 at 4:46:05 PM

New file from Eric Valette

  • Property mode set to 100644
File size: 2.8 KB
Line 
1/*
2 * crt.h  - This file contains definitions for constants related to PC console.
3 *          More information can be found at
4 *      <http://millenium.atcg.com/~taco/helppc/tables.html>
5 *
6 * Copyright (C) 1998  valette@crf.canon.fr
7 *
8 * Canon Centre Recherche France.
9 *
10 * This code is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Library General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This code is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18 * Library General Public License for more details.
19 *
20 * You should have received a copy of the GNU Library General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 *
24 * $Header$
25 */
26
27#ifndef _CRT_H
28#define _CRT_H
29
30/*
31 * Bitmap video origins in text mode.
32 */
33
34        /* In monochrome */
35#define V_MONO  0xb0000
36        /* In color      */
37#define V_COLOR 0xb8000
38
39
40/*
41 * Video Option Byte location. It must be maintained
42 * by the BIOS.
43 */
44#define VIDEO_MODE_ADDR                 0x449
45/*
46 * Video controller base IO address location in
47 * BIOS data area
48 */
49#define DISPLAY_CRT_BASE_IO_ADDR        0x463
50/*
51 * Number of collums and lines locations for the
52 * actual video Configuration
53 */
54#define NB_MAX_COL_ADDR                 0x44a
55#define NB_MAX_ROW_ADDR                 0x484
56
57    /*
58     * Miscellaneous information set by the BIOS in offset video_mode,
59     */
60
61#   define VGAMODE7     0x7     /* VGA mode 7 */
62
63    /* Color codes in text mode for background and foreground. */
64#define BLACK           0x0
65#define BLUE            0x1
66#define GREEN           0x2
67#define CYAN            0x3
68#define RED             0x4
69#define MAGENTA         0x5
70#define BROWN           0x6
71#define WHITE           0x7
72
73#define GRAY            0x8
74#define LT_BLUE         0x9
75#define LT_GREEN        0xa
76#define LT_CYAN         0xb
77#define LT_RED          0xc
78#define LT_MAGENTA      0xd
79#define YELLOW          0xe
80#define LT_WHITE        0xf
81
82#define BLINK           0x8     /* Mask used to determine blinking */
83#define OFF             0
84#define ON              1
85
86
87/*
88 * CRT Controller register offset definitions
89 */
90
91#   define CC_CURSSTART 0x0a    /* Cursor start scan line */
92#   define CC_CURSEND   0x0b    /* Cursor end scan line */
93#   define CC_STARTADDRHI 0x0c  /* start video ram addr msb */
94#   define CC_STARTADDRLO 0x0d  /* start video ram lsb */
95#   define CC_CURSHIGH  0x0e    /* Cursor high location (8 msb) */
96#   define CC_CURSLOW   0x0f    /* Cursor low location (8 msb) */
97#   define CC_VRETSTART 0x10    /* vertical synchro start lsb */
98#   define CC_VRETEND   0x11    /* vertical syn end (also it control) */
99#   define CC_VDISPEND  0x12    /* vertical display end lsb register */
100
101#endif /* _CRT_H */
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