source: buchla-68k/ram/sendval.c@ 1efe224

Last change on this file since 1efe224 was b28a12e, checked in by Thomas Lopatic <thomas@…>, 7 years ago

Zero redundant declarations.
  • Property mode set to 100644
File size: 4.1 KB
Line 
1/*
2 =============================================================================
3 sendval.c -- MIDAS-VII -- FPU output and clear functions
4 Version 4 -- 1988-09-27 -- D.N. Lynx Crowe
5 =============================================================================
6*/
7
8#include "ram.h"
9
10/*
11 =============================================================================
12 sendval() -- send a value to a voice parameter
13 =============================================================================
14*/
15
16void sendval(int16_t voice, int16_t par, int16_t ival)
17{
18 register uint16_t *fpu;
19 register int16_t oldi, val;
20 register int32_t ltmp;
21 int16_t nop;
22
23 fpu = io_fpu + FPU_OFNC + (voice << 8) + (par << 4);
24
25 switch (par) {
26
27 case 1: /* freq 1 */
28 case 3: /* freq 2 */
29 case 5: /* freq 3 */
30 case 7: /* freq 4 */
31
32 val = addpch(ival, 0);
33 break;
34
35 case 4: /* location */
36
37 val = (ival << 1) ^ 0x8000;
38 break;
39
40 case 10: /* filter */
41
42 ltmp = ((int32_t)ival >> 1) + ((int32_t)ival >>2);
43
44 if (ltmp GT (int32_t)VALMAX)
45 ltmp = (int32_t)VALMAX;
46 else if (ltmp LT (int32_t)VALMIN)
47 ltmp = (int32_t)VALMIN;
48
49 val = (int16_t)ltmp;
50 break;
51/*
52
53*/
54 case 2: /* level */
55
56 val = (((int16_t)ival >> 5) - 500) << 6;
57 break;
58
59 default:
60
61 val = ival;
62 }
63
64 oldi = setipl(FPU_DI);
65
66/* ++++++++++++++++++++++++++++ FPU interrupts disabled +++++++++++++++++++++ */
67
68 *(fpu + (int32_t)FPU_TNV0) = val;
69 ++nop; ++nop; ++nop;
70 *(fpu + (int32_t)FPU_TNV1) = val;
71 ++nop; ++nop; ++nop;
72 *(fpu + (int32_t)FPU_TCTL) = 0x0015;
73
74 setipl(oldi);
75
76/* ++++++++++++++++++++++++++++ Interrupts restored +++++++++++++++++++++++++ */
77
78}
79
80/*
81
82*/
83
84/*
85 =============================================================================
86 clearer() -- clear the FPU
87 =============================================================================
88*/
89
90void clearer(int16_t stat, int16_t sig)
91{
92 register uint16_t *fpu;
93 register uint16_t fpexp, fpmant, fptime;
94 register int16_t oldi, i;
95 int16_t nop, olds;
96
97 if (stat) {
98
99 fp_resv[0] = 0x8300; /* amplitude (off) */
100 fp_resv[1] = (ps_intn * 10) << 5; /* intensity */
101 fp_resv[2] = (ps_rate * 10) << 5; /* sweep rate */
102 fp_resv[3] = (ps_dpth * 10) << 5; /* sweep depth */
103 fp_resv[4] = 0; /* - unused - */
104 fp_resv[5] = 0; /* - unused - */
105 fp_resv[6] = ext_cv3; /* CV-3 */
106 fp_resv[7] = 0; /* - unused - */
107 fp_resv[8] = ext_cv4; /* CV-4 */
108 fp_resv[9] = ext_mod; /* Aux Signal Mod */
109 fp_resv[10] = ext_cv2; /* CV-2 */
110 fp_resv[11] = ext_cv1; /* CV-1 */
111
112 fpu = io_fpu + FPU_OFNC; /* setup to set slew rate */
113 fptime = tofpu(AMP_TIME);
114 fpexp = expbit[fptime & 0x000F];
115 fpmant = fptime & 0xFFF0;
116/*
117
118*/
119 oldi = setipl(FPU_DI); /* disable FPU interrupts */
120
121/* ++++++++++++++++++++++++++++ FPU interrupts disabled +++++++++++++++++++++ */
122
123 fpuclr(); /* reset the FPU to nominal */
124
125 *(fpu + FPU_TMNT) = fpmant; /* set amplitude slew rate */
126 ++nop; ++nop;
127 *(fpu + FPU_TEXP) = fpexp;
128
129 /* reset execution control tables */
130
131 memset(trgtab, 0, NTRIGS); /* trigger table */
132 memset(keystat, 0, 24); /* local key status */
133
134 memsetw(prstab, 0, NTRIGS); /* pressure table */
135 memsetw(veltab, SM_SCALE(64), NTRIGS); /* velocity table */
136
137 clrpfl(); /* clear pendant functions */
138
139 for (i = 0; i < 48; i++) /* sustain pedal table */
140 mpsust[i] = 0;
141
142 for (i = 0; i < 12; i++) {
143
144 vce2trg[i] = -1; /* voice to trigger table */
145 lastvce[i] = 0; /* last voice used table */
146 }
147
148 olds = sliders; /* reset articulation pots */
149 sliders = LS_PRMTR;
150 l_init(1, 0);
151 sliders = LS_OTHER;
152 l_init(1, 0);
153 sliders = olds;
154
155 setipl(oldi); /* restore interrupts */
156
157/* ++++++++++++++++++++++++++++ Interrupts restored +++++++++++++++++++++++++ */
158
159/*
160
161*/
162 lstbgnc = 0; /* reset last note begin count */
163 lstendc = 0; /* reset last note end count */
164
165 memsetw(lstbgns, 0, (NLSTENTS << 1)); /* clear begin table */
166 memsetw(lstends, 0, (NLSTENTS << 1)); /* clear end table */
167
168 /* re-establish dynamics and locations */
169
170 for (i = 0; i < 12; i++) {
171
172 setdyn(i, grpdyn[i]);
173 setloc(i, grploc[i]);
174 }
175
176 settune(); /* set tuning */
177 sendval(0, 0, amplval); /* set amplitude */
178 }
179}
180
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