implement operator mask effect

src/engine/platform/arcade.cpp

@@ -761,6 +761,12 @@ int DivPlatformArcade::dispatch(DivCommand c) {
       immWrite(0x19,0x80|pmDepth);
       break;
     }
+    case DIV_CMD_FM_OPMASK:
+      chan[c.chan].opMask=c.value&15;
+      if (chan[c.chan].active) {
+        chan[c.chan].opMaskChanged=true;
+      }
+      break;
     case DIV_CMD_FM_HARD_RESET:
       chan[c.chan].hardReset=c.value;
       break;

src/engine/platform/genesis.cpp

@@ -1463,6 +1463,13 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
       }
       break;
     }
+    case DIV_CMD_FM_OPMASK:
+      if (c.chan>=psgChanOffs) break;
+      chan[c.chan].opMask=c.value&15;
+      if (chan[c.chan].active) {
+        chan[c.chan].opMaskChanged=true;
+      }
+      break;
     case DIV_CMD_FM_HARD_RESET:
       if (c.chan>=6) break;
       chan[c.chan].hardReset=c.value;

src/engine/platform/tx81z.cpp

@@ -858,6 +858,9 @@ int DivPlatformTX81Z::dispatch(DivCommand c) {
       immWrite(0x17,0x80|pmDepth);
       break;
     }
+    case DIV_CMD_FM_OPMASK:
+      // TODO: if OPZ supports op mask
+      break;
     case DIV_CMD_FM_HARD_RESET:
       chan[c.chan].hardReset=c.value;
       break;

src/engine/platform/ym2203.cpp

@@ -1004,6 +1004,13 @@ int DivPlatformYM2203::dispatch(DivCommand c) {
       }
       break;
     }
+    case DIV_CMD_FM_OPMASK:
+      if (c.chan>=psgChanOffs) break;
+      chan[c.chan].opMask=c.value&15;
+      if (chan[c.chan].active) {
+        chan[c.chan].opMaskChanged=true;
+      }
+      break;
     case DIV_CMD_FM_HARD_RESET:
       chan[c.chan].hardReset=c.value;
       break;

src/engine/platform/ym2608.cpp

@@ -1537,6 +1537,13 @@ int DivPlatformYM2608::dispatch(DivCommand c) {
       }
       break;
     }
+    case DIV_CMD_FM_OPMASK:
+      if (c.chan>=psgChanOffs) break;
+      chan[c.chan].opMask=c.value&15;
+      if (chan[c.chan].active) {
+        chan[c.chan].opMaskChanged=true;
+      }
+      break;
     case DIV_CMD_FM_HARD_RESET:
       chan[c.chan].hardReset=c.value;
       break;

src/engine/platform/ym2610.cpp

@@ -1507,6 +1507,13 @@ int DivPlatformYM2610::dispatch(DivCommand c) {
       }
       break;
     }
+    case DIV_CMD_FM_OPMASK:
+      if (c.chan>=psgChanOffs) break;
+      chan[c.chan].opMask=c.value&15;
+      if (chan[c.chan].active) {
+        chan[c.chan].opMaskChanged=true;
+      }
+      break;
     case DIV_CMD_FM_HARD_RESET:
       chan[c.chan].hardReset=c.value;
       break;

src/engine/platform/ym2610b.cpp

@@ -1576,6 +1576,13 @@ int DivPlatformYM2610B::dispatch(DivCommand c) {
       }
       break;
     }
+    case DIV_CMD_FM_OPMASK:
+      if (c.chan>=psgChanOffs) break;
+      chan[c.chan].opMask=c.value&15;
+      if (chan[c.chan].active) {
+        chan[c.chan].opMaskChanged=true;
+      }
+      break;
     case DIV_CMD_FM_HARD_RESET:
       chan[c.chan].hardReset=c.value;
       break;