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annotate src/video/ataricommon/SDL_biosevents.c @ 1358:c71e05b4dc2e

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More header massaging... works great on Windows. ;-)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 10 Feb 2006 06:48:43 +0000
parents adc8ff3c9597
children 19418e4422cb
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /*
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24 * Atari keyboard events manager, using BIOS
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25 *
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26 * Patrice Mandin
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27 */
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28
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29 /* Mint includes */
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30 #include <mint/osbind.h>
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31 #include <mint/cookie.h>
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32
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33 #include "SDL_sysevents.h"
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34 #include "SDL_events_c.h"
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35
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36 #include "SDL_atarikeys.h"
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37 #include "SDL_atarievents_c.h"
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38 #include "SDL_xbiosevents_c.h"
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39
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40 /* To save state of keyboard */
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41 #define ATARIBIOS_MAXKEYS 128
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42
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43 static unsigned char bios_currentkeyboard[ATARIBIOS_MAXKEYS];
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44 static unsigned char bios_previouskeyboard[ATARIBIOS_MAXKEYS];
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45 static unsigned char bios_currentascii[ATARIBIOS_MAXKEYS];
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46
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47 /* Special keys state */
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48 enum {
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49 K_RSHIFT=0,
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50 K_LSHIFT,
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51 K_CTRL,
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52 K_ALT,
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53 K_CAPSLOCK,
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54 K_CLRHOME,
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55 K_INSERT
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56 };
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57
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58 /* The translation tables from a console scancode to a SDL keysym */
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59 static SDLKey keymap[ATARIBIOS_MAXKEYS];
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60
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61 static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym,
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62 SDL_bool pressed);
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63 static void UpdateSpecialKeys(int special_keys_state);
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64
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65 void AtariBios_InitOSKeymap(_THIS)
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66 {
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67 int i, vectors_mask;
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68 unsigned long dummy;
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69
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70 SDL_memset(bios_currentkeyboard, 0, sizeof(bios_currentkeyboard));
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71 SDL_memset(bios_previouskeyboard, 0, sizeof(bios_previouskeyboard));
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72
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73 /* Initialize keymap */
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74 for ( i=0; i<sizeof(keymap); i++ )
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75 keymap[i] = SDLK_UNKNOWN;
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76
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77 /* Functions keys */
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78 for ( i = 0; i<10; i++ )
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79 keymap[SCANCODE_F1 + i] = SDLK_F1+i;
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80
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81 /* Cursor keypad */
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82 keymap[SCANCODE_HELP] = SDLK_HELP;
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83 keymap[SCANCODE_UNDO] = SDLK_UNDO;
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84 keymap[SCANCODE_INSERT] = SDLK_INSERT;
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85 keymap[SCANCODE_CLRHOME] = SDLK_HOME;
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86 keymap[SCANCODE_UP] = SDLK_UP;
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87 keymap[SCANCODE_DOWN] = SDLK_DOWN;
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88 keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
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89 keymap[SCANCODE_LEFT] = SDLK_LEFT;
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90
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91 /* Special keys */
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92 keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
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93 keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
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94 keymap[SCANCODE_TAB] = SDLK_TAB;
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95 keymap[SCANCODE_ENTER] = SDLK_RETURN;
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96 keymap[SCANCODE_DELETE] = SDLK_DELETE;
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97 keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
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98 keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
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99 keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
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100 keymap[SCANCODE_LEFTALT] = SDLK_LALT;
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101 keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
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102
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103 vectors_mask = ATARI_XBIOS_MOUSEEVENTS|ATARI_XBIOS_JOYSTICKEVENTS;
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104 if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
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105 vectors_mask = 0;
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106 }
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107
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108 SDL_AtariXbios_InstallVectors(vectors_mask);
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109 }
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110
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111 void AtariBios_PumpEvents(_THIS)
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112 {
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113 int i;
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114 SDL_keysym keysym;
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115
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116 /* Update pressed keys */
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117 SDL_memset(bios_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
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118
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119 while (Bconstat(_CON)) {
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120 unsigned long key_pressed;
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121 unsigned char asciicode, scancode;
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122
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123 key_pressed=Bconin(_CON);
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124
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125 asciicode = key_pressed;
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126 scancode = key_pressed >> 16;
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127
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128 bios_currentkeyboard[scancode]=0xFF;
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129 bios_currentascii[scancode]=asciicode;
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130 }
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131
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132 /* Read special keys */
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133 UpdateSpecialKeys(Kbshift(-1));
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134
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135 /* Now generate events */
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136 for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
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137 /* Key pressed ? */
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138 if (bios_currentkeyboard[i] && !bios_previouskeyboard[i])
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139 SDL_PrivateKeyboard(SDL_PRESSED,
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140 TranslateKey(i, bios_currentascii[i], &keysym, SDL_TRUE));
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141
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142 /* Key unpressed ? */
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143 if (bios_previouskeyboard[i] && !bios_currentkeyboard[i])
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144 SDL_PrivateKeyboard(SDL_RELEASED,
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145 TranslateKey(i, bios_currentascii[i], &keysym, SDL_FALSE));
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146 }
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147
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148 SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
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149
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150 /* Will be previous table */
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151 SDL_memcpy(bios_previouskeyboard, bios_currentkeyboard, ATARIBIOS_MAXKEYS);
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152 }
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153
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154 static void UpdateSpecialKeys(int special_keys_state)
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155 {
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156 #define UPDATE_SPECIAL_KEYS(numbit,scancode) \
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157 { \
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158 if (special_keys_state & (1<<(numbit))) { \
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159 bios_currentkeyboard[scancode]=0xFF; \
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160 bios_currentascii[scancode]=0; \
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161 } \
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162 }
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163
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164 UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
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165 UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
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166 UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
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167 UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
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168 UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
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169 }
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170
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171 static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym,
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172 SDL_bool pressed)
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173 {
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174 /* Set the keysym information */
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175 keysym->scancode = scancode;
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176
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177 if (asciicode)
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178 keysym->sym = asciicode;
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179 else
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180 keysym->sym = keymap[scancode];
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181
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182 keysym->mod = KMOD_NONE;
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183 keysym->unicode = 0;
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184 if (SDL_TranslateUNICODE && pressed) {
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185 keysym->unicode = SDL_AtariToUnicodeTable[asciicode];
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186 }
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187
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188 return(keysym);
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189 }
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190
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191 void AtariBios_ShutdownEvents(void)
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192 {
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193 SDL_AtariXbios_RestoreVectors();
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194 }