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annotate src/video/ataricommon/SDL_ikbdinterrupt.S @ 721:ab0656314eef

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Date: Thu, 18 Sep 2003 14:24:35 -0400 From: Scott Watson Subject: [SDL] Improper Windows message routine calling If this hasn't been caught yet, there's an improper method of calling a user's window message routine in the various SDL_xxevents.c files. Calling it improperly can cause a crash under at least XP.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 21 Sep 2003 18:40:51 +0000
parents 9c6613983e85
children 369dcdb52d70
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
297
f6ffac90895c Updated copyright information for 2002
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /*
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29 * IKBD 6301 interrupt routine
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30 *
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31 * Patrice Mandin
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32 */
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33
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34 .text
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35
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36 .globl _SDL_AtariIkbdInstall
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37 .globl _SDL_AtariIkbdUninstall
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38
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39 .globl _SDL_AtariIkbd_keyboard
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40 .globl _SDL_AtariIkbd_mouseb
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41 .globl _SDL_AtariIkbd_mousex
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42 .globl _SDL_AtariIkbd_mousey
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43 .globl _SDL_AtariIkbd_joystick
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44
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45 .globl _SDL_AtariIkbd_enabled
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46
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47 /*--- Install our IKBD vector ---*/
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48
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49 _SDL_AtariIkbdInstall:
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50 moveml d0-d1/a0-a1,sp@-
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51
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52 | Init interrupts
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53
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54 movew #0x2700,sr
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55
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56 | Save MFP registers used for keyboard
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57
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58 lea 0xfffffa00:w,a0
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59 btst #6,a0@(0x09)
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60 sne ikbd_ierb
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61 btst #6,a0@(0x15)
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62 sne ikbd_imrb
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63
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64 | Set our routine
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65
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66 movel 0x118:w,old_ikbd
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67 movel #ikbd,0x118:w
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68 bset #6,0xfffffa09:w | IERB
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69 bset #6,0xfffffa15:w | IMRB
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70
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71 moveb #8,0xfffffc02:w
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72
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73 movew #0x2300,sr
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74
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75 | Interrupts done
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76
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77 movew #0xffff,_SDL_AtariIkbd_enabled
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78
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79 moveml sp@+,d0-d1/a0-a1
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80 rts
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81
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82 /*--- Uninstall our IKBD vector ---*/
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83
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84 _SDL_AtariIkbdUninstall:
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85 movel a0,sp@-
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86
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87 | Stop interrupt
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88
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89 movew #0x2700,sr
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90
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91 | Restore previous MFP registers
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92
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93 lea 0xfffffa00:w,a0
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94
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95 bclr #6,a0@(0x09)
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96 tstb ikbd_ierb
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97 beq ikbd_restoreierb
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98 bset #6,a0@(0x09)
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99 ikbd_restoreierb:
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100
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101 bclr #6,a0@(0x15)
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102 tstb ikbd_imrb
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103 beq ikbd_restoreimrb
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104 bset #6,a0@(0x15)
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105 ikbd_restoreimrb:
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106
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107 movel old_ikbd,0x118:w
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108
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109 | Clear keyboard buffer
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110
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111 lea 0xfffffc00:w,a0
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112 ikbd_videbuffer:
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113 btst #0,a0@
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114 beq ikbd_finbuffer
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115 tstb a0@(0x02)
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116 bra ikbd_videbuffer
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117 ikbd_finbuffer:
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118
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119 movew #0x2300,sr
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120
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121 movel sp@+,a0
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122 rts
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123
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124 .data
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125 .even
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126 .comm ikbd_ierb,4*1
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127 .even
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128 .comm ikbd_imrb,4*1
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129
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130 /*--- Our custom IKBD vector ---*/
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131
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132 .text
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133 .even
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134 .ascii "XBRA"
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135 .ascii "LSDL"
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136 .comm old_ikbd,4*1
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137 ikbd:
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138 moveml d0-d1/a0,sp@-
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139 moveb 0xfffffc02:w,d0
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140
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141 | paquet joystick ?
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142
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143 cmpb #0xff,d0
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144 beq ikbd_yes_joystick
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145
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146 | paquet souris ?
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147
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Sam Lantinga <slouken@libsdl.org>
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148 cmpb #0xf8,d0
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Sam Lantinga <slouken@libsdl.org>
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149 bmi ikbd_no_mouse
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Sam Lantinga <slouken@libsdl.org>
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150 cmpb #0xfc,d0
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Sam Lantinga <slouken@libsdl.org>
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151 bpl ikbd_no_mouse
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Sam Lantinga <slouken@libsdl.org>
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152
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Sam Lantinga <slouken@libsdl.org>
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153 ikbd_yes_mouse:
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Sam Lantinga <slouken@libsdl.org>
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154 andw #3,d0
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Sam Lantinga <slouken@libsdl.org>
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155 movew d0,_SDL_AtariIkbd_mouseb
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Sam Lantinga <slouken@libsdl.org>
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156
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Sam Lantinga <slouken@libsdl.org>
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157 movel #ikbd_mousex,0x118:w
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Sam Lantinga <slouken@libsdl.org>
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158 bra ikbd_endit
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Sam Lantinga <slouken@libsdl.org>
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159
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Sam Lantinga <slouken@libsdl.org>
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160 ikbd_yes_joystick:
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Sam Lantinga <slouken@libsdl.org>
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161 movel #ikbd_joystick,0x118:w
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Sam Lantinga <slouken@libsdl.org>
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162 bra ikbd_endit
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Sam Lantinga <slouken@libsdl.org>
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163
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Sam Lantinga <slouken@libsdl.org>
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164 ikbd_no_mouse:
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Sam Lantinga <slouken@libsdl.org>
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165 moveb d0,d1
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Sam Lantinga <slouken@libsdl.org>
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166 lea _SDL_AtariIkbd_keyboard,a0
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Sam Lantinga <slouken@libsdl.org>
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167 andl #0x7f,d1
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Sam Lantinga <slouken@libsdl.org>
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168 tas d0
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Sam Lantinga <slouken@libsdl.org>
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169 spl a0@(0,d1:w)
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Sam Lantinga <slouken@libsdl.org>
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170 ikbd_fin:
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Sam Lantinga <slouken@libsdl.org>
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171
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Sam Lantinga <slouken@libsdl.org>
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172 | Fin interruption
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Sam Lantinga <slouken@libsdl.org>
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173
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Sam Lantinga <slouken@libsdl.org>
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174 ikbd_endit:
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Sam Lantinga <slouken@libsdl.org>
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175 moveml sp@+,d0-d1/a0
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Sam Lantinga <slouken@libsdl.org>
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176 bclr #6,0xfffffa11:w
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Sam Lantinga <slouken@libsdl.org>
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177 rte
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Sam Lantinga <slouken@libsdl.org>
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178
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Sam Lantinga <slouken@libsdl.org>
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179 ikbd_mousex:
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Sam Lantinga <slouken@libsdl.org>
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180 movel d0,sp@-
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Sam Lantinga <slouken@libsdl.org>
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181
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Sam Lantinga <slouken@libsdl.org>
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182 moveb 0xfffffc02:w,d0
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Sam Lantinga <slouken@libsdl.org>
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183 extw d0
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Sam Lantinga <slouken@libsdl.org>
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184 addw d0,_SDL_AtariIkbd_mousex
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Sam Lantinga <slouken@libsdl.org>
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185
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Sam Lantinga <slouken@libsdl.org>
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186 movel sp@+,d0
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Sam Lantinga <slouken@libsdl.org>
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187
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Sam Lantinga <slouken@libsdl.org>
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188 movel #ikbd_mousey,0x118:w
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Sam Lantinga <slouken@libsdl.org>
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189 bclr #6,0xfffffa11:w
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Sam Lantinga <slouken@libsdl.org>
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190 rte
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Sam Lantinga <slouken@libsdl.org>
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191
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Sam Lantinga <slouken@libsdl.org>
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192 ikbd_mousey:
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Sam Lantinga <slouken@libsdl.org>
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193 movel d0,sp@-
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Sam Lantinga <slouken@libsdl.org>
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194
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Sam Lantinga <slouken@libsdl.org>
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195 moveb 0xfffffc02:w,d0
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Sam Lantinga <slouken@libsdl.org>
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196 extw d0
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Sam Lantinga <slouken@libsdl.org>
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197 addw d0,_SDL_AtariIkbd_mousey
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Sam Lantinga <slouken@libsdl.org>
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198
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Sam Lantinga <slouken@libsdl.org>
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199 movel sp@+,d0
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Sam Lantinga <slouken@libsdl.org>
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200
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Sam Lantinga <slouken@libsdl.org>
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201 movel #ikbd,0x118:w
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Sam Lantinga <slouken@libsdl.org>
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202 bclr #6,0xfffffa11:w
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Sam Lantinga <slouken@libsdl.org>
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203 rte
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Sam Lantinga <slouken@libsdl.org>
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204
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Sam Lantinga <slouken@libsdl.org>
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205 ikbd_joystick:
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Sam Lantinga <slouken@libsdl.org>
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206 moveb 0xfffffc02:w,_SDL_AtariIkbd_joystick+1
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Sam Lantinga <slouken@libsdl.org>
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207
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Sam Lantinga <slouken@libsdl.org>
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208 movel #ikbd,0x118:w
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
209 bclr #6,0xfffffa11:w
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
210 rte
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Sam Lantinga <slouken@libsdl.org>
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211
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Sam Lantinga <slouken@libsdl.org>
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212 .data
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213
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Sam Lantinga <slouken@libsdl.org>
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214 .even
305
9c6613983e85 Atari port cleanups from Patrice
Sam Lantinga <slouken@libsdl.org>
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215 _SDL_AtariIkbd_enabled:
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
216 .word 0
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Sam Lantinga <slouken@libsdl.org>
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diff changeset
217 .even
281
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Sam Lantinga <slouken@libsdl.org>
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218 .comm _SDL_AtariIkbd_keyboard,128
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Sam Lantinga <slouken@libsdl.org>
parents:
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219 .even
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Sam Lantinga <slouken@libsdl.org>
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220 .comm _SDL_AtariIkbd_mousex,2*1
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
221 .even
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Sam Lantinga <slouken@libsdl.org>
parents:
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222 .comm _SDL_AtariIkbd_mousey,2*1
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Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223 .even
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Sam Lantinga <slouken@libsdl.org>
parents:
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224 .comm _SDL_AtariIkbd_mouseb,2*1
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Sam Lantinga <slouken@libsdl.org>
parents:
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225 .even
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Sam Lantinga <slouken@libsdl.org>
parents:
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226 .comm _SDL_AtariIkbd_joystick,2*1