1 | /*
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2 | =============================================================================
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3 | sqexec.c -- MIDAS-VII sequence action execution code
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4 | Version 12 -- 1988-12-13 -- D.N. Lynx Crowe
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5 | =============================================================================
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6 | */
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7 |
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8 | #define DEBUGSX 0
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9 | #define DEBUGSP 0
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10 |
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11 | #define UPD_LINE 1
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12 |
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13 | #include "stddefs.h"
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14 | #include "hwdefs.h"
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15 | #include "graphdef.h"
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16 | #include "vsdd.h"
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17 | #include "wordq.h"
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18 | #include "patch.h"
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19 | #include "timers.h"
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20 |
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21 | #include "midas.h"
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22 | #include "ptdisp.h"
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23 |
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24 | #if (DEBUGSP|DEBUGSX)
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25 | extern short debugsw;
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26 | #endif
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27 |
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28 | #if DEBUGSP
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29 | short debugsp = 1;
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30 | #endif
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31 |
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32 | #if DEBUGSX
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33 | short debugsx = 1;
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34 | #endif
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35 |
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36 | extern unsigned setsr(unsigned sr);
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37 | extern long rand24(void);
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38 |
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39 | extern char trgtab[];
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40 |
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41 | extern short curslin;
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42 | extern short dsp_ok;
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43 | extern short ndisp;
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44 |
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45 | extern unsigned short seqdupd;
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46 |
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47 | extern unsigned *obj10;
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48 |
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49 | extern int cg3[][256];
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50 |
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51 | extern struct wordq ptefifo;
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52 |
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53 | short seqdspn;
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54 |
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55 | short rtab[] = { 0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F,
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56 | 0x003F, 0x003F, 0x003F };
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57 |
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58 | /* |
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59 |
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60 | */
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61 |
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62 | /*
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63 | =============================================================================
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64 | evaltv() -- evaluate a typed value
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65 | =============================================================================
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66 | */
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67 |
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68 | unsigned short evaltv(unsigned short dat)
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69 | {
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70 | switch (SQ_MTYP & dat) {
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71 |
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72 | case SQ_REG: /* register contents */
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73 |
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74 | return(sregval[SQ_MVAL & dat]);
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75 |
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76 | case SQ_VAL: /* constant value */
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77 |
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78 | return(SQ_MVAL & dat);
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79 |
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80 | case SQ_VLT: /* voltage input */
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81 |
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82 | return(0);
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83 |
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84 | case SQ_RND: /* random number */
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85 |
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86 | return((short)rand24() & rtab[SQ_MVAL & dat]);
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87 |
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88 | default: /* something weird got in here ... */
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89 |
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90 | return(0);
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91 | }
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92 | }
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93 |
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94 | /* |
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95 |
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96 | */
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97 |
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98 | /*
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99 | =============================================================================
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100 | dosqact() -- do a sequence action
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101 | =============================================================================
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102 | */
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103 |
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104 | short dosqact(unsigned short seq, unsigned short act, unsigned short dat)
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105 | {
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106 | register unsigned short obj, val;
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107 | register short sv;
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108 |
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109 | obj = (SQ_MOBJ & act) >> 8;
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110 | val = SQ_MVAL & dat;
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111 |
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112 | switch (SQ_MACT & act) {
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113 |
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114 | case SQ_NULL: /* null action */
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115 |
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116 | return(0);
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117 |
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118 | case SQ_CKEY: /* Key closure */
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119 |
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120 | putwq(&ptefifo, dat & TRG_MASK);
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121 | return(0);
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122 |
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123 | case SQ_RKEY: /* Key release */
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124 |
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125 | putwq(&ptefifo, dat | 0x8000);
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126 | return(0);
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127 |
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128 | case SQ_TKEY: /* Key transient */
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129 |
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130 | putwq(&ptefifo, dat & TRG_MASK); /* closure */
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131 | putwq(&ptefifo, dat | 0x8000); /* release */
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132 | return(0);
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133 |
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134 | case SQ_IKEY: /* If key active */
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135 |
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136 | if (trgtab[TRG_MASK & dat])
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137 | return(0);
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138 | else
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139 | return(1);
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140 | /* |
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141 |
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142 | */
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143 | case SQ_STRG: /* Trigger on */
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144 |
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145 | trstate[val] = 1;
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146 | putwq(&ptefifo, (0x1100 | val));
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147 | seqdupd |= (1 << val);
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148 | return(0);
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149 |
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150 | case SQ_CTRG: /* Trigger off */
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151 |
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152 | trstate[val] = 0;
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153 | seqdupd |= (1 << val);
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154 | return(0);
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155 |
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156 | case SQ_TTRG: /* Trigger toggle */
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157 |
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158 | trstate[val] = trstate[val] ? 0 : 1;
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159 |
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160 | if (trstate[val])
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161 | putwq(&ptefifo, (0x1100 | val));
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162 |
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163 | seqdupd |= (1 << val);
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164 | return(0);
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165 |
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166 | case SQ_ITRG: /* If trigger active */
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167 |
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168 | return(trstate[val] ? 0 : 1);
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169 | /* |
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170 |
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171 | */
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172 | case SQ_SREG: /* Set register */
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173 |
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174 | sregval[obj] = evaltv(dat);
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175 | seqdupd |= (1 << obj);
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176 | return(0);
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177 |
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178 | case SQ_AREG: /* Increment register */
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179 |
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180 | if (dat & SQ_MFLG) {
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181 |
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182 | sv = sregval[obj] - evaltv(dat);
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183 |
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184 | if (sv < 0)
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185 | sv = 0;
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186 |
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187 | sregval[obj] = sv;
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188 |
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189 | } else {
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190 |
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191 | sv = sregval[obj] + evaltv(dat);
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192 |
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193 | if (sv > 99)
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194 | sv = 99;
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195 |
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196 | sregval[obj] = sv;
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197 |
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198 | }
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199 |
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200 | seqdupd |= (1 << obj);
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201 | return(0);
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202 |
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203 | case SQ_IREQ: /* If register = */
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204 |
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205 | val = evaltv(dat);
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206 |
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207 | if (sregval[obj] EQ val)
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208 | return(0);
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209 | else
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210 | return(1);
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211 |
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212 | case SQ_IRLT: /* If register < */
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213 |
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214 | val = evaltv(dat);
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215 |
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216 | if (sregval[obj] < val)
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217 | return(0);
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218 | else
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219 | return(1);
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220 |
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221 | case SQ_IRGT: /* If register > */
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222 |
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223 | val = evaltv(dat);
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224 |
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225 | if (sregval[obj] > val)
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226 | return(0);
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227 | else
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228 | return(1);
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229 | /* |
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230 |
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231 | */
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232 | case SQ_ISTM: /* If stimulus active */
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233 |
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234 | if (trgtab[TRG_MASK & seqstim[seq]])
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235 | return(0);
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236 | else
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237 | return(1);
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238 |
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239 | case SQ_JUMP: /* Jump to sequence line */
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240 |
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241 | seqline[seq] = dat;
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242 | seqtime[seq] = seqtab[dat].seqtime;
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243 | seqflag[seq] |= SQF_CLK;
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244 |
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245 | seqdupd |= (1 << seq);
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246 | return(-1);
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247 |
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248 |
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249 | case SQ_STOP: /* Stop sequence */
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250 | default:
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251 |
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252 | seqflag[seq] = 0;
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253 | seqtime[seq] = 0;
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254 |
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255 | seqdupd |= (1 << seq);
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256 | return(-1);
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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 | /* |
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262 |
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263 | */
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264 |
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265 | /*
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266 | =============================================================================
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267 | sqexec() -- execute a line for a sequence
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268 | =============================================================================
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269 | */
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270 |
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271 | void sqexec(unsigned short seq)
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272 | {
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273 | register unsigned short act, dat, line;
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274 | register struct seqent *sp;
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275 | register short rc;
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276 |
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277 | line = seqline[seq];
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278 | sp = &seqtab[line];
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279 |
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280 | act = sp->seqact1; /* do Action 1 */
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281 | dat = sp->seqdat1;
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282 |
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283 | rc = dosqact(seq, act, dat);
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284 |
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285 | #if DEBUGSX
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286 | if (debugsw AND debugsx)
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287 | printf("sqexec(%02u): Line %03u Act 1 $%04.4X $%04.4X $%04.4X %d\n",
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288 | seq, line, act, dat, seqflag[seq], rc);
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289 | #endif
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290 |
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291 | if (rc EQ 1) /* skip action 2 */
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292 | goto act3;
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293 | else if (rc EQ -1) /* jump or stop */
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294 | return;
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295 |
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296 | act = sp->seqact2; /* do Action 2 */
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297 | dat = sp->seqdat2;
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298 |
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299 | rc = dosqact(seq, act, dat);
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300 |
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301 | #if DEBUGSX
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302 | if (debugsw AND debugsx)
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303 | printf("sqexec(%02u): Line %03u Act 2 $%04.4X $%04.4X $%04.4X %d\n",
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304 | seq, line, act, dat, seqflag[seq], rc);
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305 | #endif
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306 |
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307 | if (rc EQ 1) /* skip action 3 */
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308 | goto nxtline;
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309 | else if (rc EQ -1) /* jump or stop */
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310 | return;
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311 |
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312 | act3:
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313 | act = sp->seqact3; /* do Action 3 */
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314 | dat = sp->seqdat3;
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315 |
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316 | rc = dosqact(seq, act, dat);
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317 |
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318 | #if DEBUGSX
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319 | if (debugsw AND debugsx)
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320 | printf("sqexec(%02u): Line %03u Act 3 $%04.4X $%04.4X $%04.4X %d\n",
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321 | seq, line, act, dat, seqflag[seq], rc);
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322 | #endif
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323 |
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324 | if (rc EQ -1) /* jump or stop */
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325 | return;
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326 |
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327 | nxtline: /* increment line counter */
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328 |
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329 | if (++seqline[seq] GE NSLINES)
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330 | seqline[seq] = 0;
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331 |
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332 | seqtime[seq] = seqtab[seqline[seq]].seqtime;
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333 | seqflag[seq] |= SQF_CLK;
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334 |
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335 | #if DEBUGSX
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336 | if (debugsw AND debugsx)
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337 | printf("sqexec(%02u): Next %03u %5u $%04.4X\n",
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338 | seq, line, seqtime[seq], seqflag[seq]);
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339 | #endif
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340 |
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341 | seqdupd |= (1 << seq);
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342 | }
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343 |
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344 | /* |
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345 |
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346 | */
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347 |
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348 | /*
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349 | =============================================================================
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350 | seqproc() -- process sequences
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351 | =============================================================================
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352 | */
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353 |
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354 | void seqproc(void)
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355 | {
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356 | register unsigned short oldsr, seq;
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357 | register short dspn;
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358 | register unsigned short *fp;
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359 | char linbuf[66];
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360 |
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361 | if (0 EQ timers[SQTIMER]) {
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362 |
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363 | for (seq = 0; seq < 16; seq++) {
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364 |
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365 | fp = &seqflag[seq];
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366 |
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367 | if ( (SQF_RUN|SQF_CLK) EQ
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368 | ((SQF_RUN|SQF_CLK) & *fp) ) {
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369 |
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370 | if (seqtime[seq]) {
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371 |
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372 | if (0 EQ --seqtime[seq])
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373 | *fp &= ~SQF_CLK;
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374 |
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375 | } else {
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376 |
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377 | *fp &= ~SQF_CLK;
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378 | }
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379 | }
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380 | }
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381 |
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382 | oldsr = setsr(0x2700);
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383 | timers[SQTIMER] = SEQTIME;
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384 | setsr(oldsr);
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385 | }
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386 |
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387 | for (seq = 0; seq < 16; seq++)
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388 | if (SQF_RUN EQ ((SQF_RUN|SQF_CLK) & seqflag[seq]) )
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389 | sqexec(seq);
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390 | /* |
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391 |
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392 | */
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393 | if (((ndisp EQ 1) OR (ndisp EQ 3)) AND dsp_ok AND seqdupd) {
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394 |
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395 | #if DEBUGSX
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396 | if (debugsw AND debugsx)
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397 | printf("seqproc(): ndisp = %d seqdupd = $%04.4X\n",
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398 | ndisp, seqdupd);
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399 | #endif
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400 | if (seqdupd & (1 << seqdspn)) {
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401 |
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402 | dspn = seqdspn;
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403 |
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404 | if (v_regs[5] & 0x0180)
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405 | vbank(0);
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406 |
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407 | sprintf(linbuf, " %03d %02d %c ",
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408 | seqline[dspn],
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409 | sregval[dspn],
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410 | '0' + trstate[dspn]);
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411 |
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412 | vvputsv(obj10, 16, PDSEQFG, PDSEQBG,
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413 | dspn, 1, linbuf, 14, 14, cg3);
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414 |
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415 | #if UPD_LINE
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416 | sprintf(linbuf, "%02d", dspn + 1);
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417 |
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418 | vvputsv(obj10, 16,
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419 | (seqflag[dspn] & SQF_RUN) ?
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420 | PDSEQRN : PDSEQFG, PDSEQBG,
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421 | dspn, 2, linbuf, 14, 14, cg3);
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422 | #else
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423 | vsetcv(obj10, dspn, 2,
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424 | ( ( (seqflag[dspn] & SQF_RUN) ?
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425 | PDSEQRN : PDSEQFG) << 4) | PDSEQBG, 16);
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426 | #endif
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427 | seqdupd &= ~(1 << dspn);
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428 | }
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429 |
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430 | if (++seqdspn > 15)
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431 | seqdspn = 0;
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432 | }
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433 | }
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