modwheel

plugin/chassis.cpp

@@ -133,9 +133,13 @@ void Chassis::run(const float **, float **outputs, uint32_t frames, const MidiEv
                 s.voice[i].calcPitch(s);
 
                 switch (s.patchRam.switch1 & 0x03) {
-        case 1: s.voice[i].omega /= 4; break;
-        case 2: s.voice[i].omega /= 2;
-        default: break;
+                    case 1:
+                        s.voice[i].omega /= 4;
+                        break;
+                    case 2:
+                        s.voice[i].omega /= 2;
+                    default:
+                        break;
                 }
 
                 // printf("voice %d note = %02x ff71 = %04x\n",i, s.voice[i].note, s.voice[i].ff71 );

plugin/chassis.hpp

@@ -61,6 +61,8 @@ class Chassis : public Plugin {
         paramSustain,
         paramRelease,
 
+        paramModWheel,
+
         parameterCount
     };
 

plugin/parameters.cpp

@@ -244,6 +244,16 @@ void Chassis::initParameter(uint32_t index, Parameter &parameter) {
             parameter.ranges.def = 40.0f;
             parameter.midiCC = 26;
             break;
+
+        case paramModWheel:
+            parameter.hints = kParameterIsAutomatable | kParameterIsHidden;
+            parameter.name = "Mod wheel";
+            parameter.symbol = "ch_modwheel";
+            parameter.ranges.min = 0.0f;
+            parameter.ranges.max = 127.0f;
+            parameter.ranges.def = 0.0f;
+            parameter.midiCC = 1;
+            break;
     }
     // chorus, porta, bend range, key mode still to do
 }
@@ -307,7 +317,6 @@ void Chassis::setParameterValue(uint32_t index, float value) {
             s.patchRam.env_r = value;
             break;
 
-
         // switch 1 params
         case paramVCORange:  // bits 0-2 of switch 1
             // doesn't look great in Carla because of odd behaviour with small integer knobs
@@ -347,6 +356,10 @@ void Chassis::setParameterValue(uint32_t index, float value) {
             s.patchRam.switch2 &= 0xf3;
             s.patchRam.switch2 |= (int)value << 2;
             break;
+
+        case paramModWheel:
+            s.ff64 = (int)value << 1;
+            break;
     }
 }
 

plugin/voice.hpp

@@ -107,6 +107,7 @@ class Synth {
     uint32_t framesLeft = 0;
 
     bool keyon;
+    uint8_t ff63 = 0;
 
     // RAM from ff00h to ffffh is cleared to zero
     // this is in the startup routine at 0280h