From 0b8fcc6e8dfacb91f0f165161c20a4428f1c0a44 Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Sat, 5 Jun 2021 23:27:02 -0500
Subject: [PATCH] genesis: implement 10xx command

---
 src/engine/dispatch.h           | 1 +
 src/engine/platform/genesis.cpp | 4 ++++
 src/engine/playback.cpp         | 4 ++++
 3 files changed, 9 insertions(+)

diff --git a/src/engine/dispatch.h b/src/engine/dispatch.h
index 0436ce2f7..28609f8ae 100644
--- a/src/engine/dispatch.h
+++ b/src/engine/dispatch.h
@@ -18,6 +18,7 @@ enum DivDispatchCmds {
 
   DIV_CMD_SAMPLE_MODE,
 
+  DIV_CMD_FM_LFO,
   DIV_CMD_FM_TL,
   DIV_CMD_FM_AR,
   DIV_CMD_FM_FB,
diff --git a/src/engine/platform/genesis.cpp b/src/engine/platform/genesis.cpp
index fc3caab59..e67cba6df 100644
--- a/src/engine/platform/genesis.cpp
+++ b/src/engine/platform/genesis.cpp
@@ -279,6 +279,10 @@ int DivPlatformGenesis::dispatch(DivCommand c) {
       chan[c.chan].freqChanged=true;
       break;
     }
+    case DIV_CMD_FM_LFO: {
+      rWrite(0x22,(c.value&7)|((c.value>>4)<<3));
+      break;
+    }
     case DIV_CMD_FM_MULT: {
       unsigned short baseAddr=chanOffs[c.chan]|opOffs[orderedOps[c.value]];
       DivInstrument* ins=parent->getIns(chan[c.chan].ins);
diff --git a/src/engine/playback.cpp b/src/engine/playback.cpp
index 0cdcd7209..7f33d0e55 100644
--- a/src/engine/playback.cpp
+++ b/src/engine/playback.cpp
@@ -26,6 +26,7 @@ const char* cmdName[DIV_CMD_MAX]={
 
   "SAMPLE_MODE",
 
+  "FM_LFO",
   "FM_TL",
   "FM_AR",
   "FM_FB",
@@ -119,6 +120,9 @@ bool DivEngine::perSystemPostEffect(int ch, unsigned char effect, unsigned char
     case DIV_SYSTEM_GENESIS:
     case DIV_SYSTEM_GENESIS_EXT:
       switch (effect) {
+        case 0x10: // LFO
+          dispatchCmd(DivCommand(DIV_CMD_FM_LFO,ch,effectVal));
+          break;
         case 0x11: // FB
           dispatchCmd(DivCommand(DIV_CMD_FM_FB,ch,effectVal&7));
           break;