[f40a309] | 1 | /*
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| 2 | =============================================================================
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| 3 | sctrak.c -- advance the score to a given frame
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| 4 | Version 28 -- 1988-09-23 -- 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 | #undef DEBUG_TR /* define for sc_trak() debug */
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| 11 |
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| 12 | #undef CHECKPTR /* define to check pointers */
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| 13 |
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[b28a12e] | 14 | #include "ram.h"
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[f40a309] | 15 |
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| 16 | /*
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| 17 | =============================================================================
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| 18 | sc_trak(tval) -- position score display such that t_ctr EQ 'tval'
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| 19 | Assumes that the pointers are correct.
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| 20 | =============================================================================
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| 21 | */
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| 22 |
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[7258c6a] | 23 | int16_t sc_trak(int32_t tval)
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[f40a309] | 24 | {
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| 25 | register struct s_entry *rpb, *rpc, *rpf;
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[7258c6a] | 26 | register int32_t rtb, rtc, rtf;
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| 27 | register int16_t mod48 = 48;
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[f40a309] | 28 | struct gdsel *gdsp;
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| 29 |
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| 30 | DB_ENTR("sc_trak");
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| 31 |
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| 32 | if (ndisp NE 2) {
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| 33 |
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| 34 | DB_EXIT("sc_trak - ndisp NE 2");
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| 35 | return(FAILURE);
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| 36 | }
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| 37 |
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| 38 | #ifdef CHECKPTR
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| 39 | Pcheck(p_fwd, "p_fwd - sc_trak - entry");
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| 40 | Pcheck(p_ctr, "p_ctr - sc_trak - entry");
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| 41 | Pcheck(p_bak, "p_bak - sc_trak - entry");
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| 42 | #endif
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| 43 |
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| 44 | if ((p_fwd EQ E_NULL) OR (p_ctr EQ E_NULL) OR (p_bak EQ E_NULL)) {
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| 45 |
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| 46 | DB_EXIT("sc_trak - NULL ptr");
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| 47 | return(FAILURE);
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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 | if (v_regs[5] & 0x0180) /* setup for VSDD bank 0 */
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| 53 | vbank(0);
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| 54 |
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| 55 | rpf = p_fwd; /* forward event pointer */
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| 56 | rtf = t_fwd; /* forward event time */
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| 57 |
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| 58 | rpc = p_ctr; /* current event pointer */
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| 59 | rtc = t_ctr; /* current event time */
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| 60 |
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| 61 | rpb = p_bak; /* backward event pointer */
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| 62 | rtb = t_bak; /* backward event time */
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| 63 |
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| 64 | #ifdef DEBUG_TR
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| 65 | if (debugsw) {
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| 66 |
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| 67 | printf("\n## sc_trak(%10ld) ENTRY - fc_val=%10ld sd = %s sbase=%d soffset=%d\n",
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| 68 | tval, fc_val, sd ? "BAK" : "FWD", sbase, soffset);
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| 69 |
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| 70 | printf(" p_bak: %08lX p_ctr: %08lX p_fwd: %08lX\n",
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| 71 | p_bak, p_ctr, p_fwd);
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| 72 |
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| 73 | printf(" t_bak: %10ld t_ctr: %10ld t_fwd: %10ld\n",
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| 74 | t_bak, t_ctr, t_fwd);
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| 75 |
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| 76 | printf(" T.bak: %10ld T.ctr: %10ld T.fwd: %10ld\n",
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| 77 | p_bak->e_time, p_ctr->e_time, p_fwd->e_time);
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| 78 | }
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| 79 | #endif
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| 80 |
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| 81 | /* |
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| 82 |
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| 83 | */
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| 84 | DB_CMNT("sc_trak - update loop");
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| 85 |
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| 86 | if (sd EQ D_FWD) { /* scroll forward */
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| 87 |
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| 88 | DB_CMNT("sc_trak - forward");
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| 89 |
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| 90 | while (rtc++ LT tval) { /* advance to tval */
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| 91 |
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| 92 | sreset(); /* reset highlighting */
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| 93 |
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| 94 | ++rtb; /* update target time at p_bak */
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| 95 | ++rtf; /* update target time at p_fwd */
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| 96 |
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| 97 | if (rpb->e_type NE EV_FINI) { /* up to end of score */
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| 98 |
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| 99 | while (rpb->e_time EQ rtb) { /* check event time */
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| 100 |
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| 101 | se_disp(rpb, D_FWD, gdstbp, 0); /* display event */
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| 102 | rpb = rpb->e_fwd; /* point at next event */
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| 103 |
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| 104 | if (rpb->e_type EQ EV_FINI) /* stop at end of score */
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| 105 | break;
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| 106 | }
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| 107 | }
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| 108 |
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| 109 | if (0 EQ (rtb % mod48)) { /* handle beat markers */
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| 110 |
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| 111 | if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
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| 112 |
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| 113 | gdfsep = gdsp->next;
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| 114 |
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| 115 | gdsp->next = gdstbp[12];
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| 116 | gdsp->note = 0x1111;
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| 117 | gdsp->code = 1;
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| 118 |
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| 119 | gdstbp[12] = gdsp;
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| 120 | }
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| 121 | }
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| 122 | /* |
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| 123 |
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| 124 | */
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| 125 | if (rpc->e_type NE EV_FINI) { /* up to end of score */
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| 126 |
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| 127 | while (rpc->e_time EQ rtc) { /* check event time */
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| 128 |
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| 129 | se_disp(rpc, D_FWD, gdstbc, 1); /* display event */
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| 130 | rpc = rpc->e_fwd; /* point at next event */
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| 131 |
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| 132 | if (rpc->e_type EQ EV_FINI) /* stop at end of score */
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| 133 | break;
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| 134 | }
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| 135 | }
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| 136 |
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| 137 | if (rpf->e_type NE EV_FINI) { /* up to end of score */
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| 138 |
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| 139 | while (rpf->e_time EQ rtf) { /* check event time */
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| 140 |
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| 141 | se_disp(rpf, D_FWD, gdstbn, 0); /* display event */
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| 142 | rpf = rpf->e_fwd; /* next event pointer */
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| 143 |
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| 144 | if (rpf->e_type EQ EV_FINI) /* stop at end of score */
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| 145 | break;
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| 146 | }
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| 147 | }
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| 148 |
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| 149 | if (0 EQ (rtf % mod48)) { /* handle beat markers */
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| 150 |
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| 151 | if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
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| 152 |
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| 153 | gdfsep = gdsp->next;
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| 154 |
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| 155 | gdsp->next = gdstbn[12];
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| 156 | gdsp->note = 0x1111;
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| 157 | gdsp->code = 1;
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| 158 |
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| 159 | gdstbn[12] = gdsp;
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| 160 | }
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| 161 | }
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| 162 |
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| 163 | sc_adv(); /* scroll the display */
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| 164 | }
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| 165 |
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| 166 | /* |
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| 167 |
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| 168 | */
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| 169 | } else { /* scroll backward */
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| 170 |
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| 171 | DB_CMNT("sc_trak - backward");
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| 172 |
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| 173 | while (rtc-- GT tval) { /* advance to tval */
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| 174 |
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| 175 | sreset(); /* reset highlighting */
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| 176 |
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| 177 | --rtb; /* update target time at p_bak */
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| 178 | --rtf; /* update target time at p_fwd */
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| 179 |
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| 180 | if (rpb->e_type NE EV_SCORE) { /* up to start of score */
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| 181 |
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| 182 | while (rpb->e_time EQ rtb) { /* check event time */
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| 183 |
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| 184 | se_disp(rpb, D_BAK, gdstbp, 0);
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| 185 | rpb = rpb->e_bak; /* point at next event */
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| 186 |
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| 187 | if (rpb->e_type EQ EV_SCORE) /* stop at end of score */
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| 188 | break;
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| 189 | }
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| 190 | }
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| 191 |
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| 192 | if (0 EQ (rtb % mod48)) { /* handle beat markers */
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| 193 |
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| 194 | if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
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| 195 |
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| 196 | gdfsep = gdsp->next;
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| 197 |
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| 198 | gdsp->next = gdstbp[12];
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| 199 | gdsp->note = 0x1111;
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| 200 | gdsp->code = 1;
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| 201 |
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| 202 | gdstbp[12] = gdsp;
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| 203 | }
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| 204 | }
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| 205 | /* |
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| 206 |
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| 207 | */
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| 208 | if (rpc->e_type NE EV_SCORE) { /* up to start of score */
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| 209 |
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| 210 | while (rpc->e_time EQ rtc) { /* check event time */
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| 211 |
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| 212 | se_disp(rpc, D_BAK, gdstbc, 1); /* display event */
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| 213 | rpc = rpc->e_bak; /* point at next event */
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| 214 |
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| 215 | if (rpc->e_type EQ EV_SCORE) /* stop at end of score */
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| 216 | break;
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| 217 | }
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| 218 | }
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| 219 |
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| 220 | if (rpf->e_type NE EV_SCORE) { /* up to end of score */
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| 221 |
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| 222 | while (rpf->e_time EQ rtf) { /* check event time */
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| 223 |
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| 224 | se_disp(rpf, D_BAK, gdstbn, 0); /* display event */
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| 225 | rpf = rpf->e_bak; /* next event pointer */
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| 226 |
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| 227 | if (rpf->e_type EQ EV_SCORE) /* stop at end of score */
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| 228 | break;
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| 229 | }
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| 230 | }
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| 231 |
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| 232 | if (0 EQ (rtf % mod48)) { /* handle beat markers */
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| 233 |
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| 234 | if ((struct gdsel *)NULL NE (gdsp = gdfsep)) {
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| 235 |
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| 236 | gdfsep = gdsp->next;
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| 237 |
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| 238 | gdsp->next = gdstbn[12];
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| 239 | gdsp->note = 0x1111;
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| 240 | gdsp->code = 1;
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| 241 |
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| 242 | gdstbn[12] = gdsp;
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| 243 | }
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| 244 | }
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| 245 |
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| 246 | sc_adv(); /* scroll the display */
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| 247 | }
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| 248 | }
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| 249 | /* |
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| 250 |
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| 251 | */
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| 252 | p_fwd = rpf; /* update p_fwd */
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| 253 | t_fwd = tval + TO_FWD; /* update t_fwd */
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| 254 |
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| 255 | p_ctr = rpc; /* update p_ctr */
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| 256 | t_ctr = tval; /* update t_ctr */
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| 257 |
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| 258 | p_bak = rpb; /* update p_bak */
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| 259 | t_bak = tval - TO_BAK; /* update t_bak */
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| 260 |
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| 261 | DB_CMNT("sc_trak - dslocn");
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| 262 | dslocn(); /* display current location */
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| 263 |
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| 264 | #ifdef DEBUG_TR
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| 265 | if (debugsw) {
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| 266 |
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| 267 | printf("\n## sc_trak(%10ld) EXIT - fc_val=%10ld sbase=%d soffset=%d\n",
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| 268 | tval, fc_val, sbase, soffset);
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| 269 |
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| 270 | printf(" p_bak: %08lX, p_ctr: %08lX, p_fwd: %08lX\n",
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| 271 | p_bak, p_ctr, p_fwd);
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| 272 |
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| 273 | printf(" t_bak: %10ld, t_ctr: %10ld, t_fwd: %10ld\n",
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| 274 | t_bak, t_ctr, t_fwd);
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| 275 |
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| 276 | printf(" T.bak: %10ld T.ctr: %10ld T.fwd: %10ld\n",
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| 277 | p_bak->e_time, p_ctr->e_time, p_fwd->e_time);
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| 278 | }
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| 279 | #endif
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| 280 |
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| 281 | DB_EXIT("sc_trak");
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| 282 | return(SUCCESS);
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| 283 | }
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| 284 |
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| 285 | /* |
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| 286 |
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| 287 | */
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[7258c6a] | 288 |
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[f40a309] | 289 | /*
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| 290 | =============================================================================
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[7258c6a] | 291 | sc_trek(tval) -- follow score chain such that t_cur EQ 'tval'
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| 292 | =============================================================================
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[f40a309] | 293 | */
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| 294 |
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| 295 | int16_t sc_trek(int32_t tval)
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| 296 | {
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| 297 | register struct s_entry *rp, *ep;
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| 298 | register int32_t tc, rt;
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| 299 | register int16_t et, grp;
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| 300 |
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| 301 | DB_ENTR("sc_trek");
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| 302 |
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| 303 | #ifdef CHECKPTR
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| 304 | Pcheck(p_cur, "p_cur - sc_trek - entry");
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| 305 | #endif
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| 306 |
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| 307 | if (p_cur EQ E_NULL) {
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| 308 |
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| 309 | DB_EXIT("sc_trek - NULL ptr");
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| 310 | return(FAILURE);
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| 311 | }
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| 312 |
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| 313 | rp = p_cur; /* current event pointer */
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| 314 | rt = t_cur; /* current event time */
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| 315 |
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| 316 | DB_CMNT("sc_trek - chasing p_cur");
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| 317 |
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| 318 | #ifdef DEBUGGER
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| 319 | if (se EQ D_FWD)
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| 320 | DB_CMNT("sc_trek - forward");
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| 321 | else
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| 322 | DB_CMNT("sc_trek - backward");
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| 323 | #endif
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| 324 |
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| 325 | /* |
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| 326 |
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| 327 | */
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| 328 | while (rt NE tval) { /* track tval */
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| 329 |
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| 330 | if (se EQ D_FWD)
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| 331 | ++rt;
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| 332 | else
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| 333 | --rt;
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| 334 |
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| 335 | if (rp->e_type NE EV_FINI) {
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| 336 |
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| 337 | while (rp->e_time EQ rt) { /* process events a rt */
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| 338 |
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| 339 | /* "erase head" logic */
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| 340 |
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| 341 | if (recsw AND (se EQ D_FWD)) {
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| 342 |
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| 343 | et = 0x007F & rp->e_type;
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| 344 |
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| 345 | if ((NOT dubsw) AND
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| 346 | ((et EQ EV_NBEG) OR (et EQ EV_NEND))) {
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| 347 |
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| 348 | grp = rp->e_data2;
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| 349 |
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| 350 | if (grpstat[grp] AND (2 EQ grpmode[grp])) {
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| 351 |
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| 352 | DB_CMNT("sc_trek - erasing note");
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| 353 |
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| 354 | /* erasing a note */
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| 355 |
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| 356 | ep = rp->e_fwd;
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| 357 |
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| 358 | if (rp EQ p_bak)
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| 359 | p_bak = ep;
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| 360 |
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| 361 | if (rp EQ p_cur)
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| 362 | p_cur = ep;
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| 363 |
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| 364 | if (rp EQ p_ctr)
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| 365 | p_ctr = ep;
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| 366 |
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| 367 | if (rp EQ p_fwd)
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| 368 | p_fwd = ep;
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| 369 |
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| 370 | e_del(e_rmv(rp));
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| 371 | rp = ep;
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| 372 | goto nextev;
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| 373 | }
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| 374 | /* |
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| 375 |
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| 376 | */
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| 377 | } else if (et EQ EV_ANVL) {
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| 378 |
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| 379 | grp = 0x000F & rp->e_data1;
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| 380 |
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| 381 | if (grpstat[grp] AND (2 EQ (ancmsw ?
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| 382 | varmode[0x000F & (rp->e_data1 >> 4)][grp] :
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| 383 | grpmode[grp]))) {
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| 384 |
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| 385 | DB_CMNT("sc_trek - erasing var");
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| 386 |
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| 387 | /* erasing an analog variable */
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| 388 |
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| 389 | ep = rp->e_fwd;
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| 390 |
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| 391 | if (rp EQ p_bak)
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| 392 | p_bak = ep;
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| 393 |
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| 394 | if (rp EQ p_cur)
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| 395 | p_cur = ep;
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| 396 |
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| 397 | if (rp EQ p_ctr)
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| 398 | p_ctr = ep;
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| 399 |
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| 400 | if (rp EQ p_fwd)
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| 401 | p_fwd = ep;
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| 402 |
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| 403 | e_del(e_rmv(rp));
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| 404 | rp = ep;
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| 405 | goto nextev;
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| 406 | }
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| 407 | }
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| 408 | }
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| 409 |
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| 410 | if (rp->e_time EQ rt) { /* check event time */
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| 411 |
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| 412 | se_exec(rp, se); /* execute event */
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| 413 |
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| 414 | if (se EQ D_FWD)
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| 415 | rp = rp->e_fwd; /* point at next event */
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| 416 | else
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| 417 | rp = rp->e_bak; /* point at next event */
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| 418 | }
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| 419 |
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| 420 | nextev:
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| 421 | if (((se EQ D_FWD) AND (rp->e_type EQ EV_FINI)) OR
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| 422 | ((se EQ D_BAK) AND (rp->e_type EQ EV_SCORE)))
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| 423 | break;
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| 424 | }
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| 425 | }
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[6262b5c] | 426 | }
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| 427 | /* |
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| 428 |
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| 429 | */
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| 430 | p_cur = rp; /* update p_cur */
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| 431 | t_cur = tval; /* update t_cur */
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| 432 |
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| 433 | DB_EXIT("sc_trek");
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| 434 | return(SUCCESS);
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| 435 | }
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| 436 |
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