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annotate src/video/ataricommon/SDL_xbiosinterrupt.S @ 1302:94643e9bad18

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Date: Sat, 14 Jan 2006 15:16:01 -0500 From: Andrew Fuller Subject: [SDL] [PATCH] ML-8866 PS2->USB converter This converter seems to go by several names -- Super Dual Box, Dual USB Joypad, and who knows what else. Also branded differently with different colour cases, etc. But it seems to all be the same internals. It is a common converter used for StepMania, with several posts Googleable trying to make it work in Linux. I got mine yesterday and wanted to play stepmania, so I went ahead and made a crude patch for libsdl to split this baby into two logical joysticks. A couple notes about the patch: This patch works well for two dance mats hooked up and playing stepmania, however the mapping of the other buttons may be off. I have no joystick which uses all the buttons the converter reports, so I have no way of testing them. The name I used 0925:8866 which is the USB ID, and what SDLjoytest-GL reported is the name, even though lsusb shows Wisegroup, Ltd MP-8866 Dual USB Joypad, and the existing virtual joystick mapping uses the Wisegroup... name. Not sure why the discrepency. I'm not subscribed to this mailing list, so please CC me on any comments to this. -Andrew
author Sam Lantinga <slouken@libsdl.org>
date Tue, 31 Jan 2006 14:59:43 +0000
parents 0fb50bfaea7f
children c9b51268668f
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1 /*
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2 SDL - Simple DirectMedia Layer
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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 * XBIOS mouse & joystick vectors
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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_AtariXbios_Install
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37 .globl _SDL_AtariXbios_Restore
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38 .globl _SDL_AtariXbios_MouseVector
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39 .globl _SDL_AtariXbios_JoystickVector
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40
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41 .globl _SDL_AtariXbios_mouseb
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42 .globl _SDL_AtariXbios_mousex
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43 .globl _SDL_AtariXbios_mousey
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44 .globl _SDL_AtariXbios_joystick
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45
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46 /*--- Vector installer ---*/
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47
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48 _SDL_AtariXbios_Install:
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49 movel sp@(4),a0
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50
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51 /* Stop interrupts */
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52
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53 movew #0x2700,sr
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54
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55 /* Save old mouse vector, set our routine */
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56
820
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57 clrl oldmousevector
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58 movel sp@(8),d0
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59 beqs no_new_mouse_vector
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60 movel a0@(16),oldmousevector
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61 movel d0,a0@(16)
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62 no_new_mouse_vector:
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63
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64 /* Save old joystick vector, set our routine */
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65
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66 clrl oldjoystickvector
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67 movel sp@(12),d0
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68 beqs no_new_joystick_vector
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69 movel a0@(24),oldjoystickvector
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70 movel d0,a0@(24)
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71 no_new_joystick_vector:
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72
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73 /* Restart interrupts */
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74
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75 movew #0x2300,sr
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76
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77 rts
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78
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79 /*--- Vector restorer ---*/
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80
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81 _SDL_AtariXbios_Restore:
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82 movel sp@(4),a0
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83
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84 /* Stop interrupts */
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85
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86 movew #0x2700,sr
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87
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88 /* Restore mouse vector */
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89
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90 movel oldmousevector,d0
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91 beqs no_restore_mouse
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92 movel d0,a0@(16)
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93 no_restore_mouse:
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94
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95 /* Restore joystick vector */
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96
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97 movel oldjoystickvector,d0
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98 beqs no_restore_joystick
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99 movel d0,a0@(24)
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100 no_restore_joystick:
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101
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102 /* Restart interrupts */
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103
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104 movew #0x2300,sr
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105
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106 rts
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107
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108 /*--- Our mouse vector ---*/
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109
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110 .text
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111 .even
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112 .ascii "XBRA"
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113 .ascii "LSDL"
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114 .comm oldmousevector,4*1
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115 _SDL_AtariXbios_MouseVector:
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116 movel d0,sp@-
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117
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118 /* Mouse buttons */
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119 moveb (a0),d0
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120 andw #3,d0
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121 movew d0,_SDL_AtariXbios_mouseb
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122
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123 /* X movement */
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124 moveb a0@(1),d0
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125 extw d0
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126 addw d0,_SDL_AtariXbios_mousex
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127
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128 /* Y movement */
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129 moveb a0@(2),d0
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130 extw d0
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131 addw d0,_SDL_AtariXbios_mousey
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132
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133 /* Jump through old vector */
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134 movel sp@+,d0
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135
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136 movel oldmousevector,sp@-
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137 rts
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138
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139 .data
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140 .even
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141 .comm _SDL_AtariXbios_mousex,2*1
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142 .even
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143 .comm _SDL_AtariXbios_mousey,2*1
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144 .even
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145 .comm _SDL_AtariXbios_mouseb,2*1
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146
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147 /*--- Our joystick vector ---*/
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148
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149 .text
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150 .even
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151 .ascii "XBRA"
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152 .ascii "LSDL"
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153 .comm oldjoystickvector,4*1
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154 _SDL_AtariXbios_JoystickVector:
987
d9f3b5bb7870 Do not use registers when not necessary
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parents: 820
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155 movel d0,sp@-
305
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156
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157 /* New joystick state */
1063
0fb50bfaea7f Used wrong offset in joystick packet
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parents: 987
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158 moveb a0@(2),d0
305
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159 andw #0x8f,d0
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160 movew d0,_SDL_AtariXbios_joystick
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161
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162 /* Jump through old vector */
987
d9f3b5bb7870 Do not use registers when not necessary
Patrice Mandin <patmandin@gmail.com>
parents: 820
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163 movel sp@+,d0
305
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164
987
d9f3b5bb7870 Do not use registers when not necessary
Patrice Mandin <patmandin@gmail.com>
parents: 820
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165 movel oldjoystickvector,sp@-
305
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166 rts
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167
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168 .data
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169 .even
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170 .comm _SDL_AtariXbios_joystick,2*1