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425 | victor | 1 | $Revision: 425 $ |
1 | ha | 2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
3 | ;; ;; |
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4 | ;; SB16.INC ;; |
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5 | ;; ;; |
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6 | ;; Sound Blaster 16 functions for MenuetOS ;; |
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7 | ;; ;; |
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8 | ;; Copyright 2002 Paolo Minazzi, paolo.minazzi@inwind.it ;; |
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9 | ;; ;; |
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10 | ;; See file COPYING for details ;; |
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11 | ;; ;; |
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12 | ;; - 11.07.2002 8 bit stereo mode - Ville Turjanmaa ;; |
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13 | ;; ;; |
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14 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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15 | |||
16 | |||
17 | SB16_load_music equ 0xc0000000 |
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18 | SB16_play_music equ 0xc0000001 |
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19 | DMAPage equ 0x2A |
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20 | Rate equ 44100 |
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21 | SB16Buffer equ 0x2A0000 |
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389 | serge | 22 | ;SB16_Status equ SB16Buffer+65536 |
1 | ha | 23 | |
24 | iglobal |
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25 | sound_data_format dd 0x1 |
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26 | sound_data_length dd 65536 |
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27 | sound_data_freq dd 44100 |
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28 | endg |
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29 | |||
30 | sound_interface: |
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31 | |||
32 | cmp eax,0 ; Load data |
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33 | jne no_SB16_load_music |
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379 | serge | 34 | mov edi,[TASK_BASE] |
115 | poddubny | 35 | add edi,TASKDATA.mem_start |
1 | ha | 36 | add ebx,[edi] |
37 | call code_SB16_load_music |
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38 | ret |
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39 | no_SB16_load_music: |
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40 | |||
41 | cmp eax,1 ; Play data |
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42 | jne no_SB16_play_music |
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43 | call code_SB16_play_music |
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44 | ret |
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45 | no_SB16_play_music: |
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46 | |||
47 | cmp eax,2 ; Set data formats |
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48 | jne no_SB16_data_format |
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49 | cmp ebx,0 ; ebx=0 play format |
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50 | jne no_sound_format |
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51 | mov [sound_data_format],ecx ; 1=8b mono, 2=8b stereo |
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52 | ret |
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53 | no_sound_format: |
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54 | cmp ebx,1 ; ebx=1 data length |
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55 | jne no_sound_length |
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56 | mov [sound_data_length],ecx ; |
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57 | ret |
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58 | no_sound_length: |
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59 | cmp ebx,2 ; ebx=2 sound data frequency |
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60 | jne no_sound_freq |
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61 | mov [sound_data_freq],ecx |
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62 | ret |
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63 | no_sound_freq: |
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64 | ret |
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65 | |||
66 | no_SB16_data_format: |
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67 | |||
68 | ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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69 | cmp eax, edi ; this is subfunction #55 ? |
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70 | jne retFunc55 ; if no then return. |
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379 | serge | 71 | cmp byte [sound_flag],0 |
1 | ha | 72 | jne retFunc55 |
73 | movzx eax, byte [countDelayNote] |
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74 | or al, al ; player is busy ? |
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75 | jnz retFunc55 ; return counter delay Note |
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379 | serge | 76 | ; mov eax, [TASK_BASE] |
1 | ha | 77 | ; mov eax, [eax+0x10] ; address application im memory |
78 | ; add eax, edx ; add offset Delay-Note string |
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79 | ; mov [memAdrNote], eax |
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80 | mov [memAdrNote],edx |
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379 | serge | 81 | mov eax,[TASK_BASE] |
115 | poddubny | 82 | mov eax,[eax+TASKDATA.pid] |
1 | ha | 83 | mov [pidProcessNote],eax |
84 | xor eax, eax ; Ok! EAX = 0 |
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85 | retFunc55: |
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86 | mov [esp+36], eax ; return value EAX for application |
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87 | ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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88 | |||
89 | ret |
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90 | |||
91 | |||
92 | |||
93 | |||
94 | code_SB16_play_music: |
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95 | |||
96 | cmp [sound_data_format],1 |
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97 | jne no_sound_8bm |
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98 | call sb_play_8b_mono |
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99 | ret |
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100 | no_sound_8bm: |
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101 | |||
102 | cmp [sound_data_format],2 |
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103 | jne no_sound_8bs |
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104 | call sb_play_8b_stereo |
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105 | ret |
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106 | no_sound_8bs: |
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107 | |||
108 | ret |
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109 | |||
110 | |||
111 | |||
112 | |||
113 | |||
114 | Blaster_command: |
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115 | |||
116 | push eax |
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117 | push ecx |
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118 | push edx |
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119 | |||
120 | mov dx,word [sb16] |
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121 | add dx,0xc |
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122 | mov cx,1000 |
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123 | bcl1: |
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124 | in al,dx |
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125 | and al,128 |
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126 | jz bcl2 |
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127 | loop bcl1 |
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128 | bcl2: |
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129 | mov al,[esp+8] |
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130 | mov dx,[esp+0] |
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131 | add dx,word [sb16] |
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132 | out dx,al |
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133 | |||
134 | pop edx |
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135 | pop ecx |
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136 | pop eax |
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137 | |||
138 | ret |
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139 | |||
140 | |||
141 | sb_play_8b_stereo: |
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142 | |||
143 | pusha |
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144 | |||
145 | call sb_set_dma |
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146 | |||
147 | call sb_set_stereo |
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148 | |||
149 | mov dx,0xc |
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150 | mov al,0xa8 |
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151 | call Blaster_command |
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152 | |||
153 | mov al,0x40 |
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154 | call Blaster_command |
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155 | |||
156 | mov al,245 |
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157 | call Blaster_command |
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158 | |||
159 | mov al,0x48 |
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160 | call Blaster_command |
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161 | |||
162 | mov al,0xff |
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163 | call Blaster_command |
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164 | call Blaster_command |
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165 | |||
166 | mov al,0x91 |
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167 | call Blaster_command |
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168 | |||
169 | popa |
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170 | ret |
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171 | |||
172 | |||
173 | |||
174 | sb_set_stereo: |
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175 | |||
176 | push eax |
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177 | push edx |
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178 | |||
179 | call sb_wait |
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180 | |||
181 | mov dx,word [sb16] |
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182 | add dx,0x4 |
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183 | mov al,0xe |
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184 | out dx,al |
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185 | inc dx |
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186 | in al,dx |
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187 | and al,253 |
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188 | or al,2 ; stereo |
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189 | out dx,al |
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190 | |||
191 | pop edx |
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192 | pop eax |
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193 | ret |
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194 | |||
195 | |||
196 | |||
197 | code_SB16_load_music: |
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198 | |||
199 | cmp byte [SB16_Status],1 |
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200 | je nol |
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201 | mov edi,SB16Buffer |
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202 | mov esi,ebx |
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203 | mov ecx,65536/4 |
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204 | cld |
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205 | rep movsd |
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206 | nol: ret |
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207 | |||
208 | |||
209 | iglobal |
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210 | dma_table db 0x87,0x83,0x81,0x82 |
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211 | endg |
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212 | |||
213 | |||
214 | |||
215 | ;-------------------------------- |
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216 | ; program dma |
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217 | ;-------------------------------- |
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218 | |||
219 | sb_set_dma: |
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220 | |||
221 | pusha |
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222 | |||
223 | mov eax,[sound_dma] |
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224 | add eax,4 |
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225 | out 0xa,al |
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226 | |||
227 | mov al,0 |
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228 | out 0xc,al |
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229 | |||
230 | mov eax,[sound_dma] |
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231 | add eax,0x48 |
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232 | out 0xb,al |
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233 | |||
234 | mov edx,[sound_dma] |
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235 | shl edx,1 |
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236 | mov al,0 |
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237 | out dx,al |
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238 | |||
239 | mov al,0 |
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240 | out dx,al |
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241 | |||
242 | mov edx,[sound_dma] |
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243 | add edx,dma_table |
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244 | movzx edx,byte [edx] |
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245 | mov al,DMAPage |
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246 | out dx,al |
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247 | |||
248 | mov edx,[sound_dma] |
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249 | shl edx,1 |
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250 | inc edx |
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251 | mov eax,[sound_data_length] |
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252 | dec eax |
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253 | and eax,0xff |
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254 | ; mov al,(DataLength-1) and 0xff |
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255 | out dx,al |
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256 | |||
257 | mov eax,[sound_data_length] |
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258 | dec eax |
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259 | shr eax,8 |
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260 | ; mov al,(DataLength-1) shr 8 |
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261 | out dx,al |
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262 | |||
263 | mov eax,[sound_dma] ; DMA |
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264 | out 0xa,al |
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265 | |||
266 | popa |
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267 | ret |
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268 | |||
269 | |||
270 | |||
271 | sb_play_8b_mono: |
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272 | |||
273 | |||
274 | call sb_set_dma |
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275 | |||
276 | cmp byte [SB16_Status],1 |
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277 | jne contsb16 |
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278 | jmp retserve |
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279 | contsb16: |
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280 | |||
281 | mov dx,word [sb16] |
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282 | add dx,4 |
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283 | mov ecx,[sound_dma] |
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284 | mov ax,0x01 |
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285 | shl ax,cl |
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286 | shl ax,8 |
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287 | add ax,0x81 |
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288 | out dx,ax |
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289 | |||
290 | mov ax,0f280h ;enable irq5 |
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291 | out dx,ax |
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292 | |||
293 | |||
294 | adr1_SB: mov dx,word [sb16] |
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295 | add dx,0ch |
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296 | in al,dx |
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297 | and al,080h |
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298 | jnz adr1_SB |
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299 | |||
300 | call sb_set_stereo |
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301 | |||
302 | mov al,0d1h |
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303 | out dx,al |
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304 | |||
305 | |||
306 | mov dx,word [sb16] |
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307 | add dx,0ch |
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308 | |||
309 | call sb_wait |
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310 | |||
311 | mov al,40h ; Rate |
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312 | out dx,al |
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313 | call sb_wait |
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314 | mov al,256-1000000/Rate |
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315 | out dx,al |
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316 | |||
317 | call sb_wait |
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318 | |||
319 | mov al,14h ; Datalength |
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320 | out dx,al |
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321 | call sb_wait |
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322 | |||
323 | mov eax,[sound_data_length] |
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324 | dec eax |
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325 | and eax,0xff |
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326 | ;mov al,(DataLength-1) and 0xff |
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327 | out dx,al |
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328 | call sb_wait |
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329 | mov eax,[sound_data_length] |
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330 | dec eax |
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331 | shr eax,8 |
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332 | ;mov al,(DataLength-1) shr 8 |
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333 | out dx,al |
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334 | |||
335 | retserve: |
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336 | |||
337 | ret |
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338 | |||
339 | |||
340 | sb_wait: in al,dx ;wait |
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341 | and al,080h |
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342 | jnz sb_wait |
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343 | |||
344 | ret |
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345 | |||
346 | |||
347 | |||
348 | |||
349 | ;**************************************** |
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350 | ; END CODE SB16 by Minazzi Paolo |
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351 | ;*************************************** |