1 | /*
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2 | =============================================================================
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3 | asgvce.c -- MIDAS-VII -- assign voice / enter notes into score
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4 | Version 12 -- 1988-10-03 -- D.N. Lynx Crowe
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5 | =============================================================================
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6 | */
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7 |
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8 | #undef DEBUGGER /* define to enable debug trace */
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9 |
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10 | #define DEBUGIT 0
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11 |
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12 | #include "ram.h"
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13 |
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14 | /* |
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15 |
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16 | */
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17 |
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18 | /*
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19 | =============================================================================
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20 | clrnl() -- clear note list
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21 | =============================================================================
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22 | */
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23 |
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24 | void clrnl(void)
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25 | {
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26 | register int16_t i;
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27 |
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28 | DB_ENTR("clrnl");
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29 |
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30 | for (i = 0; i < NNEVTS - 1; i++) {
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31 |
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32 | nevents[i].nxt = &nevents[i + 1];
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33 | nevents[i].note = 0;
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34 | nevents[i].group = 0;
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35 | }
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36 |
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37 | nevents[NNEVTS - 1].nxt = (struct nevent *)0L;
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38 |
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39 | nelist = (struct nevent *)0L;
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40 | nefree = &nevents[0];
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41 | nkdown = 0;
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42 |
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43 | DB_EXIT("clrnl");
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44 | }
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45 |
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46 | /* |
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47 |
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48 | */
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49 |
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50 | /*
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51 | =============================================================================
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52 | ne_end() -- enter a note end event
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53 | =============================================================================
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54 | */
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55 |
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56 | void ne_end(int16_t trg, int16_t grp)
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57 | {
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58 | register int16_t nn;
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59 | register int32_t fcend;
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60 | register struct nevent *nx;
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61 | register struct n_entry *ep;
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62 |
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63 | DB_ENTR("ne_end");
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64 |
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65 | /* must be recording into a voice in record mode ... */
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66 |
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67 | if ((recsw EQ 0) OR (grpmode[grp] NE 2)) {
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68 |
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69 | DB_EXIT("ne_end");
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70 | return; /* ... or, we're done */
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71 | }
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72 |
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73 | DB_CMNT("ne_end - recording");
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74 |
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75 | /* make pointers point in the forward direction */
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76 |
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77 | if (sd EQ D_BAK)
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78 | chgsdf();
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79 |
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80 | if (se EQ D_BAK)
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81 | chgsef();
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82 | /* |
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83 |
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84 | */
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85 | nn = trg & 0x007F; /* note number */
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86 |
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87 | if (clksrc NE CK_STEP) { /* not in step mode */
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88 |
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89 | DB_CMNT("ne_end - non-step");
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90 |
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91 | if (E_NULL NE (ep = (struct n_entry *)e_alc(E_SIZE1))) {
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92 |
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93 | DB_CMNT("ne_end - enter note end");
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94 | ep->e_time = t_cur;
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95 | ep->e_type = EV_NEND | 0x80;
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96 | ep->e_note = nn;
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97 | ep->e_group = grp;
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98 | ep->e_vel = SM_SCALE(64);
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99 |
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100 | p_cur = e_ins((struct s_entry *)ep,
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101 | ep_adj(p_cur, 0, t_cur))->e_fwd;
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102 |
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103 | if (t_cur EQ t_ctr)
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104 | newflag = TRUE;
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105 |
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106 | se_disp(ep, D_FWD, gdstbc, 1);
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107 |
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108 | } else {
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109 |
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110 | DB_CMNT("ne_end - no space");
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111 | }
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112 |
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113 | DB_EXIT("ne_end");
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114 | return;
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115 | /* |
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116 |
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117 | */
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118 | } else if (nkdown GE 1) { /* process note entry in step mode */
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119 |
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120 | DB_CMNT("ne_end - log key up");
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121 |
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122 | if (0 EQ --nkdown) { /* if all keys are up ... */
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123 |
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124 | if (stepenb) {
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125 |
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126 | /* advance by the note weight */
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127 |
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128 | DB_CMNT("ne_end - advance weight");
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129 | fcend = fc_val + stepfrm[3][stepint];
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130 | fc_val += stepfrm[stepwgt][stepint];
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131 | sc_trek(fc_val);
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132 | sc_trak(fc_val);
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133 | DB_CMNT("ne_end - doing note ends");
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134 | }
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135 |
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136 | while (nelist) {
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137 |
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138 | nn = nelist->note; /* get note */
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139 | grp = nelist->group; /* get group */
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140 |
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141 | if (E_NULL NE (ep = (struct n_entry *)e_alc(E_SIZE1))) {
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142 |
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143 | DB_CMNT("ne_end - enter note end");
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144 | ep->e_time = t_cur;
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145 | ep->e_type = EV_NEND | 0x80;
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146 | ep->e_note = nn;
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147 | ep->e_group = grp;
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148 | ep->e_vel = SM_SCALE(64);
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149 |
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150 | p_cur = e_ins((struct s_entry *)ep,
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151 | ep_adj(p_cur, 0, t_cur))->e_fwd;
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152 |
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153 | se_disp(ep, D_FWD, gdstbc, 1);
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154 |
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155 | if (lstendc < NLSTENTS)
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156 | lstends[lstendc++] = ep;
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157 |
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158 | } else {
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159 |
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160 | DB_CMNT("ne_end - no space");
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161 | }
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162 | /* |
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163 |
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164 | */
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165 | DB_CMNT("ne_end - freeing nevent");
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166 | nx = nelist->nxt; /* get next nelist ptr */
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167 | nelist->nxt = nefree; /* free nelist entry */
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168 | nefree = nelist; /* ... */
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169 | nelist = nx; /* update nelist */
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170 | }
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171 |
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172 | lstflag = TRUE; /* indicate end of list */
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173 |
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174 | DB_CMNT("ne_end - note ends done");
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175 |
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176 | if (stepenb) {
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177 |
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178 | if (fc_val LT fcend) { /* advance to the interval */
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179 |
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180 | DB_CMNT("ne_end - advance interval");
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181 | fc_val = fcend;
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182 | sc_trek(fc_val);
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183 | sc_trak(fc_val);
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184 | }
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185 | }
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186 | }
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187 |
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188 | } else {
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189 |
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190 | nkdown = 0; /* no keys down */
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191 |
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192 | lstendc = 0; /* no step entries to delete */
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193 | lstbgnc = 0;
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194 | lstflag = FALSE;
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195 | }
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196 |
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197 | DB_EXIT("ne_end");
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198 | }
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199 |
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200 | /* |
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201 |
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202 | */
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203 |
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204 | /*
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205 | =============================================================================
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206 | ne_bgn() -- enter a note begin event
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207 | =============================================================================
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208 | */
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209 |
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210 | void ne_bgn(int16_t grp, int16_t key, int16_t vel)
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211 | {
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212 | register struct n_entry *ep;
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213 | register struct nevent *np;
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214 |
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215 | DB_ENTR("ne_bgn");
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216 |
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217 | /* must be recording into a group in record mode ... */
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218 |
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219 | if ((recsw NE 0) AND (grpmode[grp] EQ 2)) {
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220 |
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221 | DB_CMNT("ne_bgn - recording");
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222 |
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223 | /* make pointers point in the forward direction */
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224 |
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225 | if (sd EQ D_BAK)
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226 | chgsdf();
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227 |
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228 | if (se EQ D_BAK)
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229 | chgsef();
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230 |
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231 | if (lstflag) { /* cancel old list of notes */
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232 |
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233 | lstbgnc = 0;
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234 | lstendc = 0;
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235 | lstflag = FALSE;
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236 | }
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237 |
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238 | if (clksrc EQ CK_STEP) { /* step mode */
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239 |
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240 | DB_CMNT("ne_bgn - step");
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241 | ++nkdown; /* count keys down */
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242 |
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243 | if (nefree) { /* log a key closure */
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244 |
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245 | np = nefree;
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246 | nefree = np->nxt;
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247 | np->note = key;
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248 | np->group = grp;
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249 | np->nxt = nelist;
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250 | nelist = np;
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251 | DB_CMNT("ne_bgn - key logged");
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252 |
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253 | } else {
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254 |
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255 | DB_CMNT("ne_bgn - nefree empty");
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256 | }
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257 | }
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258 | /* |
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259 |
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260 | */
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261 | if (E_NULL NE (ep = (struct n_entry *)e_alc(E_SIZE1))) {
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262 |
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263 | DB_CMNT("ne_bgn - enter note begin");
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264 | ep->e_time = t_cur;
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265 | ep->e_type = EV_NBEG | 0x80;
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266 | ep->e_note = key;
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267 | ep->e_group = grp;
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268 | ep->e_vel = (clksrc EQ CK_STEP) ? SM_SCALE(64) : vel;
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269 |
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270 | p_cur = e_ins((struct s_entry *)ep,
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271 | ep_adj(p_cur, 0, t_cur))->e_fwd;
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272 |
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273 | se_disp(ep, D_FWD, gdstbc, 1);
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274 |
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275 | if (t_cur EQ t_ctr)
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276 | newflag = TRUE;
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277 |
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278 | if ((clksrc EQ CK_STEP) AND (lstbgnc < NLSTENTS))
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279 | lstbgns[lstbgnc++] = ep;
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280 |
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281 | } else {
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282 |
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283 | DB_CMNT("ne_bgn - no space");
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284 | }
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285 | }
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286 |
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287 | DB_EXIT("ne_bgn");
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288 | }
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289 |
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290 | /* |
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291 |
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292 | */
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293 |
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294 | /*
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295 | =============================================================================
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296 | showvel() -- display velocity for a group
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297 | =============================================================================
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298 | */
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299 |
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300 | void showvel(int16_t g, int16_t v)
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301 | {
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302 | int8_t buf[6];
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303 |
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304 | if (v_regs[5] & 0x0180)
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305 | vbank(0);
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306 |
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307 | lastvel[g] = v;
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308 |
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309 | sprintf(buf, "%03d", (v / 252));
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310 |
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311 | vputs(obj8, 5, (g * 5) + 6, buf, SDW11ATR);
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312 | }
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313 |
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314 | /* |
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315 |
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316 | */
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317 |
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318 | /*
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319 | =============================================================================
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320 | asgvce() -- assign a voice
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321 | =============================================================================
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322 | */
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323 |
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324 | void asgvce(int16_t grp, int16_t port, int16_t chan, int16_t key, int16_t vel)
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325 | {
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326 | register int16_t i;
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327 | register int16_t tv;
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328 | register int16_t vp;
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329 | register int16_t trg;
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330 | register int16_t aflag;
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331 | register struct nevent *np;
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332 | register struct n_entry *ep;
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333 |
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334 | DB_ENTR("asgvce");
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335 |
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336 | trg = (port << 11) + (chan << 7) + key; /* trigger number */
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337 | vp = lastvce[grp] + 1; /* voice to start with */
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338 | vp = (vp > 11) ? 0 : vp; /* ... (adjust into range) */
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339 |
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340 | /* |
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341 |
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342 | */
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343 |
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344 | DB_CMNT("asgvce - search unassgined");
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345 |
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346 | for (i = 12; i--; ) { /* search for unassigned voice */
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347 |
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348 | if ((vce2trg[vp] EQ -1) AND (vce2grp[vp] EQ (grp + 1))) {
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349 |
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350 | if ((ndisp EQ 2) AND velflag AND (NOT recsw))
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351 | showvel(grp, vel);
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352 |
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353 | lastvce[grp] = vp;
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354 | execkey(trg, tuntab[key], vp, 0);
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355 | DB_EXIT("asgvce - free voice");
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356 | return;
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357 | }
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358 |
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359 | if (++vp > 11)
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360 | vp = 0;
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361 | }
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362 |
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363 | DB_CMNT("asgvce - seach non-held");
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364 |
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365 | for (i = 12; i--; ) { /* search for non-held voice */
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366 |
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367 | tv = vce2trg[vp];
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368 |
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369 | if (tv EQ -1)
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370 | aflag = TRUE; /* OK - unassigned */
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371 | else if (0 EQ (tv & (MKEYHELD << 8)))
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372 | aflag = TRUE; /* OK - not held */
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373 | else
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374 | aflag = FALSE; /* NO - held */
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375 |
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376 | if (aflag AND (vce2grp[vp] EQ (grp + 1))) {
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377 |
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378 | if ((ins2grp[grp] & GTAG1) AND
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379 | (tv NE trg) AND (tv NE -1))
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380 | legato = 1;
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381 |
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382 | if ((ndisp EQ 2) AND velflag AND (NOT recsw))
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383 | showvel(grp, vel);
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384 |
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385 | lastvce[grp] = vp;
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386 | execkey(trg, tuntab[key], vp, 0);
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387 | DB_EXIT("asgvce - stolen voice");
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388 | return;
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389 | }
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390 |
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391 | if (++vp > 11)
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392 | vp = 0;
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393 | }
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394 |
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395 | DB_EXIT("asgvce - no voice");
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396 | }
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397 |
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