annotate src/audio/mint/SDL_mintaudio_it.S @ 1133:609c060fd2a2

The MacOSX Carbon/Cocoa/X11 all in one library patch. Relevant emails: To: SDL Developers <sdl@libsdl.org> From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se> Date: Mon, 30 May 2005 23:29:04 +0200 Subject: [SDL] Mac OS X Video Drivers [patch] I've updated/added the Carbon and X11 video drivers to the Mac OS X port of SDL 1.2 (the CVS version), and made the Cocoa driver and runtime *optional*. The default is still Cocoa, and the "Quartz" driver. But you can now also use "toolbox" for Carbon, and "x11" for running with Apple's (or other) X11 server: export SDL_VIDEODRIVER=x11 export SDL_VIDEO_GL_DRIVER=/usr/X11R6/lib/libGL.dylib It also checks if the frameworks are available, by a: #include <Carbon/Carbon.h> or #import <Cocoa/Cocoa.h> (this should make it configure on plain Darwin as well?) Here are the new configure targets: --enable-video-cocoa use Cocoa/Quartz video driver default=yes --enable-video-carbon use Carbon/QuickDraw video driver default=yes --enable-video-x11 use X11 video driver default=no ./configure --enable-video-cocoa --enable-video-carbon --enable-video-x11 \ --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib The Carbon version is just an updated version of the old SDL driver for Mac OS 9, and could probably be improved... (but it does work, including the Carbon version of SDLmain) If you disable cocoa, you can run with -framework Carbon only, and the C version of SDL_main.c. And if you disable carbon too, you can still use the X11 version which doesn't require SDLmain. I updated the DrawSprocket version, but did not include it. (no blitters or VRAM GWorlds etc. available on OS X anyway) Besides for Mac OS 9, I don't think there's any use for it ? And note that any performance on Mac OS X equals OpenGL anyway... You can get "fair" software SDL results on captured CG displays, but for decent frame rates you need to be using GL for rendering. Finally, here is the patch itself: http://www.algonet.se/~afb/SDL-12CVS-macvideo.patch --anders PS. It says "video", but as usual it applies to mouse/keyboard too. ------ To: A list for developers using the SDL library <sdl@libsdl.org> From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se> Date: Sun, 4 Sep 2005 10:02:15 +0200 Subject: [SDL] Updated Mac patch Updated the previous Mac patch to disable Carbon by default. Also "fixed" the SDL.spec again, so that it builds on Darwin. http://www.algonet.se/~afb/SDL-1.2.9-mac.patch Also applied fine to SDL12 CVS, when I tried it.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 08 Sep 2005 06:16:14 +0000
parents c83fa1c650dd
children d48ead2d2ba5 ea2a327b92d7
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, 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 /*
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24 Audio interrupts
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25
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26 Patrice Mandin, Didier Méquignon
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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_MintAudio_Callback
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32
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33 .globl _SDL_MintAudio_XbiosInterrupt
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34 .globl _SDL_MintAudio_XbiosInterruptMeasureClock
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35 .globl _SDL_MintAudio_Dma8Interrupt
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36 .globl _SDL_MintAudio_StfaInterrupt
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37
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38 .globl _SDL_MintAudio_mutex
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39 .globl _SDL_MintAudio_audiobuf
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40 .globl _SDL_MintAudio_numbuf
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41 .globl _SDL_MintAudio_audiosize
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42 .globl _SDL_MintAudio_clocktics
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43
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44 .globl _SDL_MintAudio_stfa
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45
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46 /*
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47 How it works:
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48 - Audio is playing buffer #0 (resp. #1)
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49 - We must calculate a sample in buffer #1 (resp. #0)
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50 so we first call the callback to do it
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51 - Then we swap the buffers
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52 */
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53
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54 #define savptr 0x4a2
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55 #define savamt 0x46
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56
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57 /*--- Xbios interrupt vector to measure Falcon external clock ---*/
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58
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59 _SDL_MintAudio_XbiosInterruptMeasureClock: /* 1 mS */
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60
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61 btst #0,0xFFFF8901:w /* state DMA sound */
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62 beqs SDL_MintAudio_EndIntMeasure
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63 addql #1,_SDL_MintAudio_clocktics
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64 SDL_MintAudio_EndIntMeasure:
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65 bclr #5,0xFFFFFA0F:w /* Clear service bit */
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66 rte
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67
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68 /*--- Xbios interrupt vector ---*/
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69
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70 _SDL_MintAudio_XbiosInterrupt:
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71
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72 /* Reenable interrupts, so other interrupts can work */
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73 movew #0x2300,sr
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74
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75 /* Clear service bit, so other MFP interrupts can work */
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76 bclr #5,0xfffffa0f:w
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77
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78 /* Check if we are not already running */
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79 tstw _SDL_MintAudio_mutex
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80 bnes SDL_MintAudio_XbiosEnd
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81 notw _SDL_MintAudio_mutex
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82
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83 /* Swap buffers */
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84 eorw #1,_SDL_MintAudio_numbuf
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85
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86 moveml d0-d7/a0-a6,sp@-
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87
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88 /* Callback */
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89 jsr _SDL_MintAudio_Callback
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90
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91 /* Reserve space for registers */
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92 subl #savamt,savptr
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93
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94 /* Set new buffer */
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95
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96 moveq #0,d0
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97 movel _SDL_MintAudio_audiosize,d1
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98
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99 movew _SDL_MintAudio_numbuf,d0
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100 lsll #2,d0
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101 lea _SDL_MintAudio_audiobuf,a0
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102 movel a0@(d0:l),a1
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103
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104 lea a1@(d1:l),a2
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105
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106 movel a2,sp@-
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107 movel a1,sp@-
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108 clrw sp@-
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109 movew #131,sp@-
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110 trap #14
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111 lea sp@(12),sp
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112
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113 /* Restore registers space */
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114 addl #savamt,savptr
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115
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116 moveml sp@+,d0-d7/a0-a6
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117
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118 clrw _SDL_MintAudio_mutex
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119 SDL_MintAudio_XbiosEnd:
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120 rte
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121
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122 /*--- DMA 8 bits interrupt vector ---*/
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123
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124 _SDL_MintAudio_Dma8Interrupt:
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125
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126 /* Reenable interrupts, so other interrupts can work */
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127 movew #0x2300,sr
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128
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129 /* Clear service bit, so other MFP interrupts can work */
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130 bclr #5,0xfffffa0f:w
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131
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132 /* Check if we are not already running */
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133 tstw _SDL_MintAudio_mutex
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134 bnes SDL_MintAudio_Dma8End
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135 notw _SDL_MintAudio_mutex
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136
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137 /* Swap buffers */
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138 eorw #1,_SDL_MintAudio_numbuf
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139
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140 moveml d0-d7/a0-a6,sp@-
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141
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142 /* Callback */
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143 jsr _SDL_MintAudio_Callback
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144
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145 /* Set new buffer */
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146
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147 moveq #0,d0
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148
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149 movew _SDL_MintAudio_numbuf,d0
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150 lslw #2,d0
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151 lea _SDL_MintAudio_audiobuf,a0
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152 movel a0@(d0:w),d1
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153
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154 /* Modify DMA addresses */
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155 lea 0xffff8900:w,a0
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156
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157 moveb d1,a0@(0x07) /* Start address */
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158 rorl #8,d1
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159 moveb d1,a0@(0x05)
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160 rorl #8,d1
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161 moveb d1,a0@(0x03)
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162 swap d1
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163
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164 addl _SDL_MintAudio_audiosize,d1
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165
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166 moveb d1,a0@(0x13) /* End address */
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167 rorl #8,d1
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168 moveb d1,a0@(0x11)
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169 rorl #8,d1
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170 moveb d1,a0@(0x0f)
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171
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172 moveml sp@+,d0-d7/a0-a6
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173
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174 clrw _SDL_MintAudio_mutex
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175 SDL_MintAudio_Dma8End:
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176 rte
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177
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178 /*--- STFA interrupt vector ---*/
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179
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180 STFA_SOUND_START = 6
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181 STFA_SOUND_END = STFA_SOUND_START+8
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182
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183 _SDL_MintAudio_StfaInterrupt:
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184
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185 /* Reenable interrupts, so other interrupts can work */
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186 movew #0x2300,sr
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187
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188 /* Check if we are not already running */
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189 tstw _SDL_MintAudio_mutex
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190 bnes SDL_MintAudio_StfaEnd
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191 notw _SDL_MintAudio_mutex
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192
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193 /* Swap buffers */
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194 eorw #1,_SDL_MintAudio_numbuf
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195
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196 moveml d0-d7/a0-a6,sp@-
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197
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198 /* Callback */
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199 jsr _SDL_MintAudio_Callback
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200
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201 /* Set new buffer */
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202
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203 moveq #0,d0
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204 movel _SDL_MintAudio_stfa,a1
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205
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206 movew _SDL_MintAudio_numbuf,d0
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207 lslw #2,d0
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208 lea _SDL_MintAudio_audiobuf,a0
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209 movel a0@(d0:w),d1
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210
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211 /* Modify STFA replay buffers */
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212 movel d1,a1@(STFA_SOUND_START)
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213 addl _SDL_MintAudio_audiosize,d1
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214 movel d1,a1@(STFA_SOUND_END)
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215
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216 moveml sp@+,d0-d7/a0-a6
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217
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218 clrw _SDL_MintAudio_mutex
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219 SDL_MintAudio_StfaEnd:
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220 rte