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1 | ha | 1 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
2 | ;; ;; |
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3 | ;; SB16.INC ;; |
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4 | ;; ;; |
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5 | ;; Sound Blaster 16 functions for MenuetOS ;; |
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6 | ;; ;; |
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7 | ;; Copyright 2002 Paolo Minazzi, paolo.minazzi@inwind.it ;; |
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8 | ;; ;; |
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9 | ;; See file COPYING for details ;; |
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10 | ;; ;; |
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11 | ;; - 11.07.2002 8 bit stereo mode - Ville Turjanmaa ;; |
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12 | ;; ;; |
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13 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
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14 | |||
15 | |||
16 | SB16_load_music equ 0xc0000000 |
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17 | SB16_play_music equ 0xc0000001 |
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18 | DMAPage equ 0x2A |
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19 | Rate equ 44100 |
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20 | SB16Buffer equ 0x2A0000 |
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21 | SB16_Status equ SB16Buffer+65536 |
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22 | |||
23 | iglobal |
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24 | sound_data_format dd 0x1 |
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25 | sound_data_length dd 65536 |
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26 | sound_data_freq dd 44100 |
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27 | endg |
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28 | |||
29 | sound_interface: |
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30 | |||
31 | cmp eax,0 ; Load data |
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32 | jne no_SB16_load_music |
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33 | mov edi,[0x3010] |
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34 | add edi,0x10 |
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35 | add ebx,[edi] |
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36 | call code_SB16_load_music |
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37 | ret |
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38 | no_SB16_load_music: |
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39 | |||
40 | cmp eax,1 ; Play data |
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41 | jne no_SB16_play_music |
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42 | call code_SB16_play_music |
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43 | ret |
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44 | no_SB16_play_music: |
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45 | |||
46 | cmp eax,2 ; Set data formats |
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47 | jne no_SB16_data_format |
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48 | cmp ebx,0 ; ebx=0 play format |
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49 | jne no_sound_format |
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50 | mov [sound_data_format],ecx ; 1=8b mono, 2=8b stereo |
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51 | ret |
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52 | no_sound_format: |
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53 | cmp ebx,1 ; ebx=1 data length |
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54 | jne no_sound_length |
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55 | mov [sound_data_length],ecx ; |
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56 | ret |
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57 | no_sound_length: |
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58 | cmp ebx,2 ; ebx=2 sound data frequency |
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59 | jne no_sound_freq |
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60 | mov [sound_data_freq],ecx |
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61 | ret |
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62 | no_sound_freq: |
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63 | ret |
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64 | |||
65 | no_SB16_data_format: |
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66 | |||
67 | ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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68 | cmp eax, edi ; this is subfunction #55 ? |
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69 | jne retFunc55 ; if no then return. |
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70 | cmp byte [sound_flag],0 |
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71 | jne retFunc55 |
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72 | movzx eax, byte [countDelayNote] |
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73 | or al, al ; player is busy ? |
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74 | jnz retFunc55 ; return counter delay Note |
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75 | ; mov eax, [0x3010] |
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76 | ; mov eax, [eax+0x10] ; address application im memory |
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77 | ; add eax, edx ; add offset Delay-Note string |
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78 | ; mov [memAdrNote], eax |
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79 | mov [memAdrNote],edx |
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80 | mov eax,[0x3010] |
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81 | mov eax,[eax+4] |
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82 | mov [pidProcessNote],eax |
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83 | xor eax, eax ; Ok! EAX = 0 |
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84 | retFunc55: |
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85 | mov [esp+36], eax ; return value EAX for application |
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86 | ;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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87 | |||
88 | ret |
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89 | |||
90 | |||
91 | |||
92 | |||
93 | code_SB16_play_music: |
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94 | |||
95 | cmp [sound_data_format],1 |
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96 | jne no_sound_8bm |
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97 | call sb_play_8b_mono |
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98 | ret |
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99 | no_sound_8bm: |
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100 | |||
101 | cmp [sound_data_format],2 |
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102 | jne no_sound_8bs |
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103 | call sb_play_8b_stereo |
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104 | ret |
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105 | no_sound_8bs: |
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106 | |||
107 | ret |
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108 | |||
109 | |||
110 | |||
111 | |||
112 | |||
113 | Blaster_command: |
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114 | |||
115 | push eax |
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116 | push ecx |
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117 | push edx |
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118 | |||
119 | mov dx,word [sb16] |
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120 | add dx,0xc |
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121 | mov cx,1000 |
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122 | bcl1: |
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123 | in al,dx |
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124 | and al,128 |
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125 | jz bcl2 |
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126 | loop bcl1 |
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127 | bcl2: |
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128 | mov al,[esp+8] |
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129 | mov dx,[esp+0] |
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130 | add dx,word [sb16] |
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131 | out dx,al |
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132 | |||
133 | pop edx |
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134 | pop ecx |
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135 | pop eax |
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136 | |||
137 | ret |
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138 | |||
139 | |||
140 | sb_play_8b_stereo: |
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141 | |||
142 | pusha |
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143 | |||
144 | call sb_set_dma |
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145 | |||
146 | call sb_set_stereo |
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147 | |||
148 | mov dx,0xc |
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149 | mov al,0xa8 |
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150 | call Blaster_command |
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151 | |||
152 | mov al,0x40 |
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153 | call Blaster_command |
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154 | |||
155 | mov al,245 |
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156 | call Blaster_command |
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157 | |||
158 | mov al,0x48 |
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159 | call Blaster_command |
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160 | |||
161 | mov al,0xff |
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162 | call Blaster_command |
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163 | call Blaster_command |
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164 | |||
165 | mov al,0x91 |
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166 | call Blaster_command |
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167 | |||
168 | popa |
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169 | ret |
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170 | |||
171 | |||
172 | |||
173 | sb_set_stereo: |
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174 | |||
175 | push eax |
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176 | push edx |
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177 | |||
178 | call sb_wait |
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179 | |||
180 | mov dx,word [sb16] |
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181 | add dx,0x4 |
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182 | mov al,0xe |
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183 | out dx,al |
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184 | inc dx |
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185 | in al,dx |
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186 | and al,253 |
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187 | or al,2 ; stereo |
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188 | out dx,al |
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189 | |||
190 | pop edx |
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191 | pop eax |
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192 | ret |
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193 | |||
194 | |||
195 | |||
196 | code_SB16_load_music: |
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197 | |||
198 | cmp byte [SB16_Status],1 |
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199 | je nol |
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200 | mov edi,SB16Buffer |
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201 | mov esi,ebx |
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202 | mov ecx,65536/4 |
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203 | cld |
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204 | rep movsd |
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205 | nol: ret |
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206 | |||
207 | |||
208 | iglobal |
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209 | dma_table db 0x87,0x83,0x81,0x82 |
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210 | endg |
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211 | |||
212 | |||
213 | |||
214 | ;-------------------------------- |
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215 | ; program dma |
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216 | ;-------------------------------- |
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217 | |||
218 | sb_set_dma: |
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219 | |||
220 | pusha |
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221 | |||
222 | mov eax,[sound_dma] |
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223 | add eax,4 |
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224 | out 0xa,al |
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225 | |||
226 | mov al,0 |
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227 | out 0xc,al |
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228 | |||
229 | mov eax,[sound_dma] |
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230 | add eax,0x48 |
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231 | out 0xb,al |
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232 | |||
233 | mov edx,[sound_dma] |
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234 | shl edx,1 |
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235 | mov al,0 |
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236 | out dx,al |
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237 | |||
238 | mov al,0 |
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239 | out dx,al |
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240 | |||
241 | mov edx,[sound_dma] |
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242 | add edx,dma_table |
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243 | movzx edx,byte [edx] |
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244 | mov al,DMAPage |
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245 | out dx,al |
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246 | |||
247 | mov edx,[sound_dma] |
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248 | shl edx,1 |
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249 | inc edx |
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250 | mov eax,[sound_data_length] |
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251 | dec eax |
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252 | and eax,0xff |
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253 | ; mov al,(DataLength-1) and 0xff |
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254 | out dx,al |
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255 | |||
256 | mov eax,[sound_data_length] |
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257 | dec eax |
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258 | shr eax,8 |
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259 | ; mov al,(DataLength-1) shr 8 |
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260 | out dx,al |
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261 | |||
262 | mov eax,[sound_dma] ; DMA |
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263 | out 0xa,al |
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264 | |||
265 | popa |
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266 | ret |
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267 | |||
268 | |||
269 | |||
270 | sb_play_8b_mono: |
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271 | |||
272 | |||
273 | call sb_set_dma |
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274 | |||
275 | cmp byte [SB16_Status],1 |
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276 | jne contsb16 |
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277 | jmp retserve |
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278 | contsb16: |
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279 | |||
280 | mov dx,word [sb16] |
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281 | add dx,4 |
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282 | mov ecx,[sound_dma] |
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283 | mov ax,0x01 |
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284 | shl ax,cl |
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285 | shl ax,8 |
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286 | add ax,0x81 |
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287 | out dx,ax |
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288 | |||
289 | mov ax,0f280h ;enable irq5 |
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290 | out dx,ax |
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291 | |||
292 | |||
293 | adr1_SB: mov dx,word [sb16] |
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294 | add dx,0ch |
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295 | in al,dx |
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296 | and al,080h |
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297 | jnz adr1_SB |
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298 | |||
299 | call sb_set_stereo |
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300 | |||
301 | mov al,0d1h |
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302 | out dx,al |
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303 | |||
304 | |||
305 | mov dx,word [sb16] |
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306 | add dx,0ch |
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307 | |||
308 | call sb_wait |
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309 | |||
310 | mov al,40h ; Rate |
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311 | out dx,al |
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312 | call sb_wait |
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313 | mov al,256-1000000/Rate |
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314 | out dx,al |
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315 | |||
316 | call sb_wait |
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317 | |||
318 | mov al,14h ; Datalength |
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319 | out dx,al |
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320 | call sb_wait |
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321 | |||
322 | mov eax,[sound_data_length] |
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323 | dec eax |
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324 | and eax,0xff |
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325 | ;mov al,(DataLength-1) and 0xff |
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326 | out dx,al |
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327 | call sb_wait |
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328 | mov eax,[sound_data_length] |
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329 | dec eax |
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330 | shr eax,8 |
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331 | ;mov al,(DataLength-1) shr 8 |
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332 | out dx,al |
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333 | |||
334 | retserve: |
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335 | |||
336 | ret |
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337 | |||
338 | |||
339 | sb_wait: in al,dx ;wait |
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340 | and al,080h |
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341 | jnz sb_wait |
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342 | |||
343 | ret |
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344 | |||
345 | |||
346 | |||
347 | |||
348 | ;**************************************** |
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349 | ; END CODE SB16 by Minazzi Paolo |
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350 | ;*************************************** |