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annotate src/audio/mint/SDL_mintaudio_it.S @ 4001:6831b8723a85 SDL-1.2

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Don't initialize the audio buffer passed to the application's audio callback, since they are expected to entirely fill it with data or silence. For legacy apps that might expect the buffer to already have silence and thus may not fill the buffer in the callback, there's an environment variable to expose the old behaviour. Fixes Bugzilla #416.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 05 Jul 2007 02:24:36 +0000
parents 4dae257a9cbf
children a1b03ba2fcd0
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 .globl _SDL_MintAudio_hasfpu
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44
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45 .globl _SDL_MintAudio_stfa
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46
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47 /*
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48 How it works:
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49 - Audio is playing buffer #0 (resp. #1)
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50 - We must calculate a sample in buffer #1 (resp. #0)
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51 so we first call the callback to do it
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52 - Then we swap the buffers
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53 */
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54
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55 #define savptr 0x4a2
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56 #define savamt 0x46
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57
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58 /*--- Xbios interrupt vector to measure Falcon external clock ---*/
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59
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60 _SDL_MintAudio_XbiosInterruptMeasureClock: /* 1 mS */
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61
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62 btst #0,0xFFFF8901:w /* state DMA sound */
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63 beqs SDL_MintAudio_EndIntMeasure
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64 addql #1,_SDL_MintAudio_clocktics
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65 SDL_MintAudio_EndIntMeasure:
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66 bclr #5,0xFFFFFA0F:w /* Clear service bit */
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67 rte
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68
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69 /*--- Xbios interrupt vector ---*/
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70
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71 _SDL_MintAudio_XbiosInterrupt:
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72
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73 /* Reenable interrupts, so other interrupts can work */
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74 movew #0x2300,sr
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75
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76 /* Clear service bit, so other MFP interrupts can work */
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77 bclr #5,0xfffffa0f:w
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78
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79 /* Check if we are not already running */
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80 tstw _SDL_MintAudio_mutex
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81 bne SDL_MintAudio_XbiosEnd
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82 notw _SDL_MintAudio_mutex
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83
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84 /* Swap buffers */
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85 eorw #1,_SDL_MintAudio_numbuf
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86
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87 moveml d0-d7/a0-a6,sp@-
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88
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89 /* Save FPU if needed */
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90 tstw _SDL_MintAudio_hasfpu
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91 beqs SDL_MintAudio_Xbios_nofpu1
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92 .chip 68060
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93 fsave sp@-
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94 fmoveml fpcr/fpsr/fpiar,sp@-
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95 fmovemx fp0-fp7,sp@-
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96 .chip 68000
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97 SDL_MintAudio_Xbios_nofpu1:
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98
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99 /* Callback */
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100 jsr _SDL_MintAudio_Callback
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101
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102 /* Restore FPU if needed */
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103 tstw _SDL_MintAudio_hasfpu
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104 beqs SDL_MintAudio_Xbios_nofpu2
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105 .chip 68060
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106 fmovemx sp@+,fp0-fp7
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107 fmoveml sp@+,fpcr/fpsr/fpiar
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108 frestore sp@+
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109 .chip 68000
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110 SDL_MintAudio_Xbios_nofpu2:
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111
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112 /* Reserve space for registers */
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113 subl #savamt,savptr
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114
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115 /* Set new buffer */
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116
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117 moveq #0,d0
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118 movel _SDL_MintAudio_audiosize,d1
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119
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120 movew _SDL_MintAudio_numbuf,d0
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121 lsll #2,d0
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122 lea _SDL_MintAudio_audiobuf,a0
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123 movel a0@(d0:l),a1
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124
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125 lea a1@(d1:l),a2
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126
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127 movel a2,sp@-
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128 movel a1,sp@-
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129 clrw sp@-
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130 movew #131,sp@-
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131 trap #14
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132 lea sp@(12),sp
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133
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134 /* Restore registers space */
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135 addl #savamt,savptr
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136
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137 moveml sp@+,d0-d7/a0-a6
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138
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139 clrw _SDL_MintAudio_mutex
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140 SDL_MintAudio_XbiosEnd:
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141 rte
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142
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143 /*--- DMA 8 bits interrupt vector ---*/
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144
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145 _SDL_MintAudio_Dma8Interrupt:
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146
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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147 /* Reenable interrupts, so other interrupts can work */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
148 movew #0x2300,sr
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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149
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
150 /* Clear service bit, so other MFP interrupts can work */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
151 bclr #5,0xfffffa0f:w
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
152
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
153 /* Check if we are not already running */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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154 tstw _SDL_MintAudio_mutex
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
155 bne SDL_MintAudio_Dma8End
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
156 notw _SDL_MintAudio_mutex
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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157
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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158 /* Swap buffers */
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
159 eorw #1,_SDL_MintAudio_numbuf
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
160
3864
ea2a327b92d7 Only saved non preserved registers
Patrice Mandin <patmandin@gmail.com>
parents: 1097
diff changeset
161 moveml d0-d1/a0-a1,sp@-
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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162
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
163 /* Save FPU if needed */
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
164 tstw _SDL_MintAudio_hasfpu
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
165 beqs SDL_MintAudio_Dma8_nofpu1
3867
4dae257a9cbf Forgot cpu boundaries
Patrice Mandin <patmandin@gmail.com>
parents: 3866
diff changeset
166 .chip 68060
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
167 fsave sp@-
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
168 fmoveml fpcr/fpsr/fpiar,sp@-
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
169 fmovemx fp0-fp7,sp@-
3867
4dae257a9cbf Forgot cpu boundaries
Patrice Mandin <patmandin@gmail.com>
parents: 3866
diff changeset
170 .chip 68000
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
171 SDL_MintAudio_Dma8_nofpu1:
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
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172
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
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diff changeset
173 /* Callback */
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
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174 jsr _SDL_MintAudio_Callback
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
175
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
176 /* Restore FPU if needed */
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
177 tstw _SDL_MintAudio_hasfpu
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
178 beqs SDL_MintAudio_Dma8_nofpu2
3867
4dae257a9cbf Forgot cpu boundaries
Patrice Mandin <patmandin@gmail.com>
parents: 3866
diff changeset
179 .chip 68060
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
180 fmovemx sp@+,fp0-fp7
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
181 fmoveml sp@+,fpcr/fpsr/fpiar
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
182 frestore sp@+
3867
4dae257a9cbf Forgot cpu boundaries
Patrice Mandin <patmandin@gmail.com>
parents: 3866
diff changeset
183 .chip 68000
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
184 SDL_MintAudio_Dma8_nofpu2:
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
185
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
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diff changeset
186 /* Set new buffer */
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
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187
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
188 moveq #0,d0
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
189
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
190 movew _SDL_MintAudio_numbuf,d0
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
191 lslw #2,d0
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
192 lea _SDL_MintAudio_audiobuf,a0
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
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193 movel a0@(d0:w),d1
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
194
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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195 /* Modify DMA addresses */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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196 lea 0xffff8900:w,a0
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
197
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
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198 moveb d1,a0@(0x07) /* Start address */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
199 rorl #8,d1
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
200 moveb d1,a0@(0x05)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
201 rorl #8,d1
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
202 moveb d1,a0@(0x03)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
203 swap d1
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
204
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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205 addl _SDL_MintAudio_audiosize,d1
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
206
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
207 moveb d1,a0@(0x13) /* End address */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
208 rorl #8,d1
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
209 moveb d1,a0@(0x11)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
210 rorl #8,d1
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
211 moveb d1,a0@(0x0f)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
212
3864
ea2a327b92d7 Only saved non preserved registers
Patrice Mandin <patmandin@gmail.com>
parents: 1097
diff changeset
213 moveml sp@+,d0-d1/a0-a1
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
214
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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215 clrw _SDL_MintAudio_mutex
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
216 SDL_MintAudio_Dma8End:
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
217 rte
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
218
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
219 /*--- STFA interrupt vector ---*/
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
220
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
221 STFA_SOUND_START = 6
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
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222 STFA_SOUND_END = STFA_SOUND_START+8
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
223
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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224 _SDL_MintAudio_StfaInterrupt:
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
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225
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
226 /* Reenable interrupts, so other interrupts can work */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
227 movew #0x2300,sr
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
228
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
229 /* Check if we are not already running */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
230 tstw _SDL_MintAudio_mutex
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
231 bnes SDL_MintAudio_StfaEnd
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
232 notw _SDL_MintAudio_mutex
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
233
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
234 /* Swap buffers */
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
235 eorw #1,_SDL_MintAudio_numbuf
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
236
1093
d00b4d8508ab Save all registers on interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
237 moveml d0-d7/a0-a6,sp@-
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
238
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
239 /* Save FPU if needed */
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
240 tstw _SDL_MintAudio_hasfpu
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
241 beqs SDL_MintAudio_Stfa_nofpu1
3867
4dae257a9cbf Forgot cpu boundaries
Patrice Mandin <patmandin@gmail.com>
parents: 3866
diff changeset
242 .chip 68060
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
243 fsave sp@-
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
244 fmoveml fpcr/fpsr/fpiar,sp@-
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
245 fmovemx fp0-fp7,sp@-
3867
4dae257a9cbf Forgot cpu boundaries
Patrice Mandin <patmandin@gmail.com>
parents: 3866
diff changeset
246 .chip 68000
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
247 SDL_MintAudio_Stfa_nofpu1:
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
248
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
249 /* Callback */
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
250 jsr _SDL_MintAudio_Callback
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
251
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
252 /* Restore FPU if needed */
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
253 tstw _SDL_MintAudio_hasfpu
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
254 beqs SDL_MintAudio_Stfa_nofpu2
3867
4dae257a9cbf Forgot cpu boundaries
Patrice Mandin <patmandin@gmail.com>
parents: 3866
diff changeset
255 .chip 68060
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
256 fmovemx sp@+,fp0-fp7
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
257 fmoveml sp@+,fpcr/fpsr/fpiar
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
258 frestore sp@+
3867
4dae257a9cbf Forgot cpu boundaries
Patrice Mandin <patmandin@gmail.com>
parents: 3866
diff changeset
259 .chip 68000
3866
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
260 SDL_MintAudio_Stfa_nofpu2:
afbcf97a5dd9 Save/restore fpu registers if needed
Patrice Mandin <patmandin@gmail.com>
parents: 3864
diff changeset
261
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
262 /* Set new buffer */
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
263
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
264 moveq #0,d0
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
265 movel _SDL_MintAudio_stfa,a1
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
266
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
267 movew _SDL_MintAudio_numbuf,d0
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
268 lslw #2,d0
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
269 lea _SDL_MintAudio_audiobuf,a0
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
270 movel a0@(d0:w),d1
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
271
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
272 /* Modify STFA replay buffers */
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
273 movel d1,a1@(STFA_SOUND_START)
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
274 addl _SDL_MintAudio_audiosize,d1
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
275 movel d1,a1@(STFA_SOUND_END)
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
276
1093
d00b4d8508ab Save all registers on interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
277 moveml sp@+,d0-d7/a0-a6
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
278
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
279 clrw _SDL_MintAudio_mutex
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
280 SDL_MintAudio_StfaEnd:
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
281 rte