source: buchla-68k/ram/msl.c@ 018c029

Last change on this file since 018c029 was 00c31a2, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Fixed parentheses and braces.

  • Property mode set to 100644
File size: 13.3 KB
Line 
1/*
2 =============================================================================
3 msl.c -- midas main scan loop
4 Version 102 -- 1989-11-14 -- D.N. Lynx Crowe
5
6 List with pr -e4 option to expand tabs to 4 spaces instead of 8.
7 =============================================================================
8*/
9
10#define DEBUGIT 0 /* enable debug code */
11
12#define OLDTIME 0 /* use old tempo time calculations */
13
14#include "ram.h"
15
16#define LCL_PRT 3 /* 1-origin local keyboard port number */
17
18#if DEBUGIT
19short debugms = 1;
20#endif
21
22uint16_t fifoval;
23
24/*
25 =============================================================================
26 clk_ped() -- process clock on/off toggle pedal
27 =============================================================================
28*/
29
30void clk_ped(int16_t stat)
31{
32 if (stat)
33 tglclk = TRUE;
34}
35
36/*
37 =============================================================================
38 pch_ped() -- process punch in/out toggle pedal
39 =============================================================================
40*/
41
42void pch_ped(int16_t stat)
43{
44 if (stat AND pchsw)
45 tglpch = TRUE;
46}
47
48/*
49 =============================================================================
50 msl() -- MIDAS main scan loop
51 =============================================================================
52*/
53
54void msl(void)
55{
56 volatile uint8_t *ioadr;
57 struct s_entry *ep;
58 int16_t i, ti, val;
59 uint16_t crel, oldsr;
60 int16_t chan, port, trg, trig, vel;
61 int16_t esi, newsig, oldclk, oldrec;
62 int32_t fctemp;
63
64#if DEBUGIT
65 if (debugsw AND debugms)
66 printf("msl(): ENTRY ndisp=%d\n", ndisp);
67#endif
68
69 runit = TRUE; /* set run state */
70
71 while (runit) {
72
73 dsp_ok = TRUE; /* set display-OK flag for this pass */
74
75 ioadr = &io_ser + 2L; /* get edit switch status */
76 esi = *ioadr & 0x0008;
77
78 if (editss NE esi) { /* check for edit switch change */
79
80 editss = esi;
81
82 if (editss) /* toggle edit state if it went hi */
83 editsw = NOT editsw;
84 }
85
86 if (editsw) /* update edit LED */
87 io_leds = 0x9E;
88 else
89 io_leds = 0x1E;
90
91 if ((NOT lampsw) AND lcdtime) {
92
93 if (0 EQ --lcdtime)
94 io_leds = 0x1F; /* turn off the LCD backlight */
95 }
96
97 msm(); /* scan the MIDI ports */
98
99 if (tglclk) { /* check for clock on/off toggle */
100
101 oldsr = setsr(0x2700); /* disable interrupts */
102 tglclk = FALSE; /* cancel toggle flag */
103 setsr(oldsr); /* enable interrupts */
104
105 clkset(NOT clkrun); /* toggle clock mode */
106 dclkmd(); /* update display */
107 }
108
109 if (tglpch) { /* check for punch in/out toggle */
110
111 oldsr = setsr(0x2700); /* disable interrupts */
112 tglpch = FALSE; /* cancel toggle flag */
113 setsr(oldsr); /* enable interrupts */
114
115 if ((ndisp EQ 2) AND (v_regs[5] & 0x0180))
116 vbank(0);
117
118 for (i = 0; i < 12; i++) { /* scan the groups */
119
120 if (grpmode[i] EQ 1) { /* stdby -> rec */
121
122 grpmode[i] = 2;
123
124 if (ndisp EQ 2)
125 vputc(obj8, 2, 6 + (i * 5),
126 '*', simled[grpmode[i]]);
127
128 } else if (grpmode[i] EQ 2) { /* rec -> play */
129
130 grpmode[i] = 0;
131
132 if (ndisp EQ 2)
133 vputc(obj8, 2, 6 + (i * 5),
134 '*', simled[grpmode[i]]);
135 }
136 }
137 }
138
139
140 /* process stimulli from the patch stimulus fifo */
141
142 if (getwq(&ptefifo, &fifoval) GE 0) {
143
144 crel = 0x8000 & fifoval;
145
146 trg = TRG_MASK & fifoval;
147 port = 0x0003 & (fifoval >> 11);
148 chan = 0x000F & (fifoval >> 7);
149 trig = 0x007F & fifoval;
150
151 veltab[trg] = vel = SM_SCALE(64);
152 prstab[trg] = 0;
153
154 if (crel) { /* release */
155
156 trgtab[trg] &= ~M_KSTATE;
157
158 for (i = 0; i < 12; i++) {
159
160 if (vce2trg[i] EQ trg) {
161
162 vce2trg[i] = -1;
163 procpfl(trg);
164
165 }
166 }
167
168 stmproc(fifoval); /* do it as a patch stimulus */
169
170 } else { /* closure */
171
172 trgtab[trg] |= M_KSTATE;
173
174 stmproc(fifoval); /* do it as a patch stimulus */
175
176 for (i = 0; i < 12; i++)
177 if ((grp2prt[i][0] EQ 1 + port) AND
178 (grp2prt[i][1] EQ 1 + chan))
179 asgvce(i, port, chan, trig, vel);
180 }
181 }
182
183 if (-1L NE (afi = XBIOS(X_ANALOG))) { /* check panel inputs */
184
185 asig = (afi >> 8) & 0x007F; /* signal number */
186 astat = (afi >> 7) & 0x0001; /* status */
187 aval = afi & 0x007F; /* value */
188
189 if (asig) { /* active signal */
190
191 aflag = TRUE;
192 newsig = astat AND (NOT sigtab[asig][1]);
193
194 sigtab[asig][0] = aval;
195 sigtab[asig][1] = astat;
196
197 } else { /* all keys up */
198
199 aflag = FALSE;
200 newsig = FALSE;
201
202 for (i = 0; i < 128; i++)
203 sigtab[i][1] = 0;
204 }
205
206
207 if (aflag) { /* anything changed ? */
208
209 if ((asig GE 1) AND (asig LE 24)) {
210
211 /* local keyboard performance key */
212
213 localkb(asig);
214
215 } else if ((asig GE 25) AND (asig LE 38)) {
216
217 if (astat)
218 lcd_on();
219
220 if (NOT newsig)
221 doslide();
222
223 } else if ((asig GE 39) AND (asig LE 52)) {
224
225 if (astat)
226 lcd_on();
227
228 (*(*swpt)[asig - 39])(astat, (asig - 39));
229
230 } else if ((asig GE 60) AND (asig LE 69)) {
231
232 (*d_key)(asig - 60);
233
234
235 } else switch (asig) {
236
237 case 53: /* tablet x */
238
239 val = SM_SCALE(aval);
240
241 for (i = 0; i < 12; i++) {
242
243 if (grp2prt[i][0] EQ LCL_PRT) {
244
245 if (newsv(i, SM_HTPW, val)) {
246
247 if (recsw AND grpstat[i] AND
248 (2 EQ (ancmsw ? varmode[0][i] : grpmode[i]))) {
249
250 if (E_NULL NE (ep = e_alc(E_SIZE2))) {
251
252 ep->e_time = t_cur;
253 ep->e_type = EV_ANVL;
254 ep->e_data1 = (int8_t)i;
255 ep->e_dn = (struct s_entry *)((int32_t)val << 16);
256 p_cur = e_ins(ep, ep_adj(p_cur, 0, t_cur))->e_fwd;
257 ctrsw = TRUE;
258 se_disp(ep, D_FWD, gdstbc, 1);
259 ctrsw = FALSE;
260 }
261
262 } else if ((angroup - 1) EQ i) {
263
264 dsanval(0);
265 }
266 }
267 }
268 }
269
270 break;
271
272 case 54: /* tablet y */
273
274 val = SM_SCALE(aval);
275
276 for (i = 0; i < 12; i++) {
277
278 if (grp2prt[i][0] EQ LCL_PRT) {
279
280 if (newsv(i, SM_VTMW, val)) {
281
282 if (recsw AND grpstat[i] AND
283 (2 EQ (ancmsw ? varmode[1][i] : grpmode[i]))) {
284
285 if (E_NULL NE (ep = e_alc(E_SIZE2))) {
286
287 ep->e_time = t_cur;
288 ep->e_type = EV_ANVL;
289 ep->e_data1 = (int8_t)(0x0010 | i);
290 ep->e_dn = (struct s_entry *)((int32_t)val << 16);
291 p_cur = e_ins(ep, ep_adj(p_cur, 0, t_cur))->e_fwd;
292 ctrsw = TRUE;
293 se_disp(ep, D_FWD, gdstbc, 1);
294 ctrsw = FALSE;
295 }
296
297 } else if ((angroup - 1) EQ i) {
298
299 dsanval(1);
300 }
301 }
302 }
303 }
304
305 break;
306
307 case 55: /* cursor x */
308
309 (*cx_key)(); break;
310
311 case 56: /* cursor y */
312
313 (*cy_key)(); break;
314
315 case 58: /* longpot r */
316
317 val = SM_SCALE(aval);
318
319 for (i = 0; i < 12; i++) {
320
321 if (grp2prt[i][0] EQ LCL_PRT) {
322
323 if (newsv(i, SM_LPBR, val)) {
324
325 if (recsw AND grpstat[i] AND
326 (2 EQ (ancmsw ? varmode[2][i] : grpmode[i]))) {
327
328 if (E_NULL NE (ep = e_alc(E_SIZE2))) {
329
330 ep->e_time = t_cur;
331 ep->e_type = EV_ANVL;
332 ep->e_data1 = (int8_t)(0x0020 | i);
333 ep->e_dn = (struct s_entry *)((int32_t)val << 16);
334 p_cur = e_ins(ep, ep_adj(p_cur, 0, t_cur))->e_fwd;
335 ctrsw = TRUE;
336 se_disp(ep, D_FWD, gdstbc, 1);
337 ctrsw = FALSE;
338 }
339
340 } else if ((angroup - 1) EQ i) {
341
342 dsanval(2);
343 }
344 }
345 }
346 }
347
348 break;
349
350
351 case 59: /* scroll wheel */
352
353 wheel(); break;
354
355 case 70: /* X key */
356
357 (*x_key)(); break;
358
359 case 71: /* E key */
360
361#if DEBUGIT
362 if (debugsw AND debugms)
363 printf("msl(): -> e_key ($%lX) astat=%d ndisp=%d\n",
364 e_key, astat, ndisp);
365#endif
366 (*e_key)();
367
368#if DEBUGIT
369 if (debugsw AND debugms)
370 printf("msl(): <- e_key ($%lX) astat=%d ndisp=%d runit=%d\n",
371 e_key, astat, ndisp, runit);
372#endif
373
374 break;
375
376 case 72: /* M key */
377
378 (*m_key)(); break;
379
380 case 73: /* Tempo */
381
382 if (aval > 50) { /* dead band */
383 if (aval < 53)
384 aval = 50;
385 else
386 aval -= 2;
387 }
388
389 tmpomlt = aval > 100 ? 100 : aval;
390#if OLDTIME
391 ti = ( (tmpomlt + 50) * tmpoval) / 100;
392 ti = (short)( (192000L / ti) - 1);
393#else
394 ti = (tmpomlt + 50) * tmpoval;
395 ti = (int16_t)( (19200000L / ti) - 1);
396#endif
397 TIME_T2H = (uint8_t)(ti >> 8);
398 TIME_T2L = (uint8_t)(ti & 0x00FF);
399
400 if (tmpomlt EQ 50) { /* 0 */
401
402 io_leds = 0x18; /* green off */
403 io_leds = 0x19; /* red off */
404
405 } else if (tmpomlt GT 50) { /* hi */
406
407 io_leds = 0x98; /* green on */
408 io_leds = 0x19; /* red off */
409
410 } else { /* lo */
411
412 io_leds = 0x18; /* green off */
413 io_leds = 0x99; /* red on */
414 }
415
416 break;
417
418 case 74: /* Time */
419
420 if (aval > 50) { /* dead band */
421 if (aval < 53)
422 aval = 50;
423 else
424 aval -= 2;
425 }
426
427 ti = aval > 100 ? 100 : aval;
428 timemlt = tmultab[ti];
429
430 if (ti EQ 50) { /* 0 */
431
432 io_leds = 0x1A; /* green off */
433 io_leds = 0x1B; /* red off */
434
435 } else if (ti GT 50) { /* hi */
436
437 io_leds = 0x9A; /* green on */
438 io_leds = 0x1B; /* red off */
439
440 } else { /* lo */
441
442 io_leds = 0x1A; /* green off */
443 io_leds = 0x9B; /* red on */
444 }
445
446 break;
447
448
449 case 75: /* Tuning */
450
451 if (aval > 50) { /* dead band */
452 if (aval < 53)
453 aval = 50;
454 else
455 aval -= 2;
456 }
457
458 i = (aval > 100) ? 100 : aval;
459 tuneval = (i - 50) << 2;
460 settune();
461
462 if (i EQ 50) {
463
464 io_leds = 0x1C; /* green off */
465 io_leds = 0x1D; /* red off */
466
467 } else if (i GT 50) {
468
469 io_leds = 0x9C; /* green on */
470 io_leds = 0x1D; /* red off */
471
472 } else {
473
474 io_leds = 0x1C; /* green off */
475 io_leds = 0x9D; /* red on */
476 }
477
478 break;
479
480 case 76: /* amplitude */
481
482 aval += aval >> 2;
483
484 if (aval > 127)
485 aval = 127;
486
487 amplval = (aval << 9) ^ (int16_t)0x8000;
488 sendval(0, 0, amplval);
489 break;
490
491 case 77: /* pedal 1 */
492
493 val = SM_SCALE(aval);
494
495 for (i = 0; i < 12; i++) {
496
497 if (grp2prt[i][0] EQ LCL_PRT) {
498
499 if (newsv(i, SM_PED1, val)) {
500
501 if (recsw AND grpstat[i] AND
502 (2 EQ (ancmsw ? varmode[4][i] : grpmode[i]))) {
503
504 if (E_NULL NE (ep = e_alc(E_SIZE2))) {
505
506 ep->e_time = t_cur;
507 ep->e_type = EV_ANVL;
508 ep->e_data1 = (int8_t)(0x0040 | i);
509 ep->e_dn = (struct s_entry *)((int32_t)val << 16);
510 p_cur = e_ins(ep, ep_adj(p_cur, 0, t_cur))->e_fwd;
511 ctrsw = TRUE;
512 se_disp(ep, D_FWD, gdstbc, 1);
513 ctrsw = FALSE;
514 }
515
516 } else if ((angroup - 1) EQ i) {
517
518 dsanval(4);
519 }
520 }
521 }
522 }
523
524 break;
525
526
527 case 79: /* cv 1 */
528
529 val = SM_SCALE(aval);
530
531 for (i = 0; i < 12; i++) {
532
533 if (grp2prt[i][0] EQ LCL_PRT) {
534
535 if (newsv(i, SM_CTL1, val)) {
536
537 if (recsw AND grpstat[i] AND
538 (2 EQ (ancmsw ? varmode[3][i] : grpmode[i]))) {
539
540 if (E_NULL NE (ep = e_alc(E_SIZE2))) {
541
542 ep->e_time = t_cur;
543 ep->e_type = EV_ANVL;
544 ep->e_data1 = (int8_t)(0x0030 | i);
545 ep->e_dn = (struct s_entry *)((int32_t)val << 16);
546 p_cur = e_ins(ep, ep_adj(p_cur, 0, t_cur))->e_fwd;
547 ctrsw = TRUE;
548 se_disp(ep, D_FWD, gdstbc, 1);
549 ctrsw = FALSE;
550 }
551
552 } if ((angroup - 1)EQ i) {
553
554 dsanval(3);
555 }
556 }
557 }
558 }
559
560 break;
561
562 }
563 }
564 }
565
566#if DEBUGIT
567 if (debugsw AND debugms AND (NOT runit))
568 printf("msl(): end of asig cases -- dsp_ok = %d\n", dsp_ok);
569#endif
570
571 /* memory allocation changed ? */
572
573 if ((ndisp EQ 2) AND se_chg AND dsp_ok) {
574
575 dsmem(); /* display memory remaining */
576 se_chg = FALSE;
577 }
578
579 nxtflag = FALSE; /* clear 'next score' flag */
580 fctemp = fc_val; /* sample the frame clock */
581
582 if (t_cur NE fctemp) { /* see if frame clock changed */
583
584 if (t_cur LT fctemp) { /* clock incremented */
585
586 if (se EQ D_BAK) /* change direction ? */
587 chgsef();
588
589 sc_trek(fctemp); /* track frame clock */
590
591 } else { /* clock decremented */
592
593 if (se EQ D_FWD) /* change direction ? */
594 chgseb();
595
596 sc_trek(fctemp); /* track frame clock */
597 }
598
599 /* handle display update if there's time for it */
600
601 } else if (dsp_ok AND (t_ctr NE t_cur)) {
602
603 if (t_ctr LT t_cur) { /* clock incremented */
604
605 if (sd EQ D_BAK) /* change direction ? */
606 chgsdf();
607
608 sc_trak(t_ctr + 1); /* track frame clock */
609
610 } else { /* clock decremented */
611
612 if (sd EQ D_FWD) /* change direction ? */
613 chgsdb();
614
615 sc_trak(t_ctr - 1); /* track frame clock */
616 }
617 }
618
619#if DEBUGIT
620 if (debugsw AND debugms AND (NOT runit))
621 printf("msl(): end of clock processing -- dsp_ok = %d\n",
622 dsp_ok);
623#endif
624
625 /* handle 'next score' flag */
626
627 if (nxtflag AND (sd EQ D_FWD)) { /* switch scores ? */
628
629 oldrec = recsw;
630 oldclk = clkrun;
631
632 ti = curscor + 1;
633
634 if (ti GE N_SCORES)
635 ti = 0;
636
637 for (i = 0; i < N_SCORES; i++) {
638
639 if (E_NULL NE scores[ti]) {
640
641 selscor(ti);
642 break;
643 }
644
645 if (++ti GE N_SCORES)
646 ti = 0;
647 }
648
649 clkset(oldclk); /* restore clock mode */
650 dsclk();
651 recsw = oldrec; /* restore record/play mode */
652 dsrpmod();
653 nxtflag = FALSE; /* clear 'next score' flag */
654 }
655
656#if DEBUGIT
657 if (debugsw AND debugms AND (NOT runit))
658 printf("msl(): curproc\n");
659#endif
660
661 curproc(); /* process wheel and ball */
662
663#if DEBUGIT
664 if (debugsw AND debugms AND (NOT runit))
665 printf("msl(): seqproc\n");
666#endif
667
668 seqproc(); /* process sequences */
669 }
670
671#if DEBUGIT
672 if (debugsw AND debugms)
673 printf("msl(): EXIT ndisp=%d\n", ndisp);
674#endif
675}
676
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