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annotate src/video/ataricommon/SDL_ikbdinterrupt.S @ 1768:814f9f2c7a33

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Fixed bug #80 Date: 21 Apr 2003 17:20:20 +0100 From: Alan Swanson <swanson@uklinux.net> Subject: [SDL] New XFree 4.3 Video Mode Patch If you look at the unsorted list of modes returned by X, here's mine; 1280 x 1024 @ 85.0 > 1024 x 768 @ 100.3 > USER 800 x 600 @ 125.5 > SET 640 x 480 @ 124.9 > 1280 x 1024 @ 75.0 ] 1280 x 1024 @ 60.0 ] 1280 x 960 @ 85.0 ] X11 1280 x 960 @ 60.0 ] AUTO 1152 x 864 @ 75.0 ]=20 1152 x 768 @ 54.8 ] 960 x 720 @ 120.0 ] ... 640 x 400 @ 85.1 ] 256k 576 x 432 @ 150.0 ] 249k PIXEL 640 x 350 @ 85.1 ] 224k COUNT 576 x 384 @ 109.6 ] 221k ... The user set modes come first followed by X set modes which are ordered by decreasing number of pixels and refresh. The reason why every other library or program not using SDL working is due to SDL scanning the modes in reverse getting X11 provided modes modes with the lowest refresh.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 05 May 2006 05:50:26 +0000
parents c9b51268668f
children 99210400e8b9
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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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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 * IKBD 6301 interrupt routine
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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 .text
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30
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31 .globl _SDL_AtariIkbdInstall
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32 .globl _SDL_AtariIkbdUninstall
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33
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34 .globl _SDL_AtariIkbd_keyboard
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35 .globl _SDL_AtariIkbd_mouseb
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36 .globl _SDL_AtariIkbd_mousex
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37 .globl _SDL_AtariIkbd_mousey
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38 .globl _SDL_AtariIkbd_joystick
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39
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40 .globl _SDL_AtariIkbd_enabled
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41
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42 /*--- Install our IKBD vector ---*/
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43
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44 _SDL_AtariIkbdInstall:
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45 moveml d0-d1/a0-a1,sp@-
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46
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47 | Disable interrupts
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48
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49 movew #0x2700,sr
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50
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51 | Save MFP registers used for keyboard
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52
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53 lea 0xfffffa00:w,a0
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54 btst #6,a0@(0x09)
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55 sne ikbd_ierb
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56 btst #6,a0@(0x15)
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57 sne ikbd_imrb
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58
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59 | Set our routine
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60
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61 movel 0x118:w,old_ikbd
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62 movel #ikbd,0x118:w
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63 bset #6,0xfffffa09:w | IERB
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64 bset #6,0xfffffa15:w | IMRB
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65
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66 | Set mouse relative mode
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67
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68 moveb #8,0xfffffc02:w
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69
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70 | Reenable interrupts
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71
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72 movew #0x2300,sr
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73
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74 | Interrupts done
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75
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76 movew #0xffff,_SDL_AtariIkbd_enabled
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78 moveml sp@+,d0-d1/a0-a1
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79 rts
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80
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81 /*--- Uninstall our IKBD vector ---*/
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82
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83 _SDL_AtariIkbdUninstall:
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84 movel a0,sp@-
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85
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86 | Disable interrupts
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88 movew #0x2700,sr
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90 | Restore previous MFP registers
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92 lea 0xfffffa00:w,a0
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94 bclr #6,a0@(0x09)
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95 tstb ikbd_ierb
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96 beqs ikbd_restoreierb
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97 bset #6,a0@(0x09)
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98 ikbd_restoreierb:
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99
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100 bclr #6,a0@(0x15)
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101 tstb ikbd_imrb
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102 beqs ikbd_restoreimrb
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103 bset #6,a0@(0x15)
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104 ikbd_restoreimrb:
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106 movel old_ikbd,0x118:w
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108 | Clear keyboard buffer
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110 lea 0xfffffc00:w,a0
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111 ikbd_videbuffer:
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112 btst #0,a0@
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113 beqs ikbd_finbuffer
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114 tstb a0@(0x02)
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115 bras ikbd_videbuffer
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116 ikbd_finbuffer:
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117
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118 | Reenable interrupts
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119
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120 movew #0x2300,sr
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122 movel sp@+,a0
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123 rts
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124
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125 .bss
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126
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127 .even
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128 .comm ikbd_ierb,1
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129 .comm ikbd_imrb,1
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131 /*--- Our custom IKBD vector ---*/
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133 .text
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134 .even
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135 .ascii "XBRA"
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136 .ascii "LSDL"
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137 .comm old_ikbd,4*1
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138 ikbd:
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139 | Check if source is IKBD or MIDI
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140 btst #0,0xfffffc00.w
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141 beqs ikbd_oldmidi
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diff changeset
142
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
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143 moveml d0-d1/a0,sp@-
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144 moveb 0xfffffc02:w,d0
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145
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diff changeset
146 | Joystick packet ?
281
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147
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148 cmpb #0xff,d0
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diff changeset
149 beqs ikbd_yes_joystick
281
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150
1081
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151 | Mouse packet ?
281
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152
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
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parents:
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153 cmpb #0xf8,d0
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diff changeset
154 bmis ikbd_no_mouse
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
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155 cmpb #0xfc,d0
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156 bpls ikbd_no_mouse
281
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157
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158 | Mouse packet, byte #1
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159
281
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160 ikbd_yes_mouse:
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161 andw #3,d0
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162 movew d0,_SDL_AtariIkbd_mouseb
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163
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164 movel #ikbd_mousex,0x118:w
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165 bras ikbd_endit_stack
281
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166
1082
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167 | Joystick packet, byte #1
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168
281
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169 ikbd_yes_joystick:
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170 movel #ikbd_joystick,0x118:w
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diff changeset
171 bras ikbd_endit_stack
281
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172
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173 | Keyboard press/release
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174
281
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175 ikbd_no_mouse:
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176 moveb d0,d1
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177 lea _SDL_AtariIkbd_keyboard,a0
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178 andw #0x7f,d1
48436ffdf677 Avoid generating multiple key press/release messages for the same key
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179 tas d0
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180 spl a0@(0,d1:w)
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181
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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182 | End of interrupt
281
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183
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184 ikbd_endit_stack:
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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185 moveml sp@+,d0-d1/a0
281
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186 ikbd_endit:
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187 bclr #6,0xfffffa11:w
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188 rte
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189
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190 | Call old MIDI interrupt
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191
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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192 ikbd_oldmidi:
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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193 movel old_ikbd,sp@-
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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parents: 305
diff changeset
194 rts
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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195
1082
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196 | Mouse packet, byte #2
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197
281
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198 ikbd_mousex:
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199
1081
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200 | Check if source is IKBD or MIDI
1110
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201 btst #0,0xfffffc00.w
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202 beqs ikbd_oldmidi
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203
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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diff changeset
204 movew d0,sp@-
281
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205
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206 moveb 0xfffffc02:w,d0
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207 extw d0
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208 addw d0,_SDL_AtariIkbd_mousex
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209
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210 movew sp@+,d0
281
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211
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parents:
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212 movel #ikbd_mousey,0x118:w
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diff changeset
213 bras ikbd_endit
281
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214
1082
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215 | Mouse packet, byte #3
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216
281
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217 ikbd_mousey:
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218
1081
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219 | Check if source is IKBD or MIDI
1110
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220 btst #0,0xfffffc00.w
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221 beqs ikbd_oldmidi
1081
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diff changeset
222
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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parents: 305
diff changeset
223 movew d0,sp@-
281
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parents:
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224
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parents:
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225 moveb 0xfffffc02:w,d0
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parents:
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226 extw d0
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227 addw d0,_SDL_AtariIkbd_mousey
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228
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diff changeset
229 movew sp@+,d0
281
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230
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
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parents:
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231 movel #ikbd,0x118:w
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diff changeset
232 bras ikbd_endit
281
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233
1082
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234 | Joystick packet, byte #2
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235
281
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236 ikbd_joystick:
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237
1081
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diff changeset
238 | Check if source is IKBD or MIDI
1110
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diff changeset
239 btst #0,0xfffffc00.w
b6fdf299a2f3 Revert back to 1.6 revision
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diff changeset
240 beqs ikbd_oldmidi
1081
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parents: 305
diff changeset
241
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
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parents:
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242 moveb 0xfffffc02:w,_SDL_AtariIkbd_joystick+1
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 movel #ikbd,0x118:w
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parents: 305
diff changeset
245 bras ikbd_endit
281
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
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parents:
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246
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
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parents:
diff changeset
247 .data
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
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parents:
diff changeset
248
c5010ab8ba35 Added initial support for Atari (thanks Patrice!)
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parents:
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249 .even
305
9c6613983e85 Atari port cleanups from Patrice
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
250 _SDL_AtariIkbd_enabled:
9c6613983e85 Atari port cleanups from Patrice
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parents: 297
diff changeset
251 .word 0
1081
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diff changeset
252
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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parents: 305
diff changeset
253 .bss
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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parents: 305
diff changeset
254
305
9c6613983e85 Atari port cleanups from Patrice
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parents: 297
diff changeset
255 .even
281
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parents:
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256 .comm _SDL_AtariIkbd_keyboard,128
1081
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diff changeset
257 .comm _SDL_AtariIkbd_mousex,2
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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diff changeset
258 .comm _SDL_AtariIkbd_mousey,2
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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parents: 305
diff changeset
259 .comm _SDL_AtariIkbd_mouseb,2
369dcdb52d70 Call old interrupt when receiving MIDI stuff
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parents: 305
diff changeset
260 .comm _SDL_AtariIkbd_joystick,2