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