From 107d5e151484abd858c4692fc56dd517d0b3a3c1 Mon Sep 17 00:00:00 2001
From: tildearrow <tildearrow@protonmail.com>
Date: Sat, 14 May 2022 02:38:20 -0500
Subject: [PATCH] prepare for ExtCh OPN/OPNA

---
 src/engine/song.h     |  2 ++
 src/engine/sysDef.cpp | 26 ++++++++++++++++++++++++--
 src/gui/guiConst.cpp  |  2 ++
 3 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/src/engine/song.h b/src/engine/song.h
index d8a37cbb6..e4f003542 100644
--- a/src/engine/song.h
+++ b/src/engine/song.h
@@ -65,7 +65,9 @@ enum DivSystem {
   DIV_SYSTEM_MMC5,
   DIV_SYSTEM_N163,
   DIV_SYSTEM_OPN,
+  DIV_SYSTEM_OPN_EXT,
   DIV_SYSTEM_PC98,
+  DIV_SYSTEM_PC98_EXT,
   DIV_SYSTEM_OPL,
   DIV_SYSTEM_OPL2,
   DIV_SYSTEM_OPL3,
diff --git a/src/engine/sysDef.cpp b/src/engine/sysDef.cpp
index a83e88a73..a252eff8e 100644
--- a/src/engine/sysDef.cpp
+++ b/src/engine/sysDef.cpp
@@ -1259,7 +1259,7 @@ void DivEngine::registerSystems() {
   );
 
   sysDefs[DIV_SYSTEM_OPN]=new DivSysDef(
-    "Yamaha YM2203 (OPN)", NULL, 0x8d, 0, 6, true, false, 0x151, false,
+    "Yamaha YM2203 (OPN)", NULL, 0x8d, 0, 6, true, true, 0x151, false,
     {"FM 1", "FM 2", "FM 3", "PSG 1", "PSG 2", "PSG 3"},
     {"F1", "F2", "F3", "S1", "S2", "S3"},
     {DIV_CH_FM, DIV_CH_FM, DIV_CH_FM, DIV_CH_PULSE, DIV_CH_PULSE, DIV_CH_PULSE},
@@ -1269,8 +1269,19 @@ void DivEngine::registerSystems() {
     fmPostEffectHandler
   );
 
+  sysDefs[DIV_SYSTEM_OPN_EXT]=new DivSysDef(
+    "Yamaha YM2203 (OPN) Extended Channel 3", NULL, 0xb6, 0, 9, true, true, 0x151, false,
+    {"FM 1", "FM 2", "FM 3 OP1", "FM 3 OP2", "FM 3 OP3", "FM 3 OP4", "PSG 1", "PSG 2", "PSG 3"},
+    {"F1", "F2", "O1", "O2", "O3", "O4", "S1", "S2", "S3"},
+    {DIV_CH_FM, DIV_CH_FM, DIV_CH_OP, DIV_CH_OP, DIV_CH_OP, DIV_CH_OP, DIV_CH_PULSE, DIV_CH_PULSE, DIV_CH_PULSE},
+    {DIV_INS_FM, DIV_INS_FM, DIV_INS_FM, DIV_INS_FM, DIV_INS_FM, DIV_INS_FM, DIV_INS_AY, DIV_INS_AY, DIV_INS_AY},
+    {},
+    fmHardResetEffectHandler,
+    fmPostEffectHandler
+  );
+
   sysDefs[DIV_SYSTEM_PC98]=new DivSysDef(
-    "Yamaha YM2608 (OPNA)", NULL, 0x8e, 0, 16, true, false, 0, false,
+    "Yamaha YM2608 (OPNA)", NULL, 0x8e, 0, 16, true, true, 0, false,
     {"FM 1", "FM 2", "FM 3", "FM 4", "FM 5", "FM 6", "Square 1", "Square 2", "Square 3", "Kick", "Snare", "Top", "HiHat", "Tom", "Rim", "ADPCM"},
     {"F1", "F2", "F3", "F4", "F5", "F6", "S1", "S2", "S3", "BD", "SD", "TP", "HH", "TM", "RM", "P"},
     {DIV_CH_FM, DIV_CH_FM, DIV_CH_FM, DIV_CH_FM, DIV_CH_FM, DIV_CH_FM, DIV_CH_PULSE, DIV_CH_PULSE, DIV_CH_PULSE, DIV_CH_NOISE, DIV_CH_NOISE, DIV_CH_NOISE, DIV_CH_NOISE, DIV_CH_NOISE, DIV_CH_NOISE, DIV_CH_PCM},
@@ -1280,6 +1291,17 @@ void DivEngine::registerSystems() {
     fmPostEffectHandler
   );
 
+  sysDefs[DIV_SYSTEM_PC98_EXT]=new DivSysDef(
+    "Yamaha YM2608 (OPNA) Extended Channel 3", NULL, 0xb7, 0, 19, true, true, 0, false,
+    {"FM 1", "FM 2", "FM 3 OP1", "FM 3 OP2", "FM 3 OP3", "FM 3 OP4", "FM 4", "FM 5", "FM 6", "Square 1", "Square 2", "Square 3", "Kick", "Snare", "Top", "HiHat", "Tom", "Rim", "ADPCM"},
+    {"F1", "F2", "O1", "O2", "O3", "O4", "F4", "F5", "F6", "S1", "S2", "S3", "BD", "SD", "TP", "HH", "TM", "RM", "P"},
+    {DIV_CH_FM, DIV_CH_FM, DIV_CH_OP, DIV_CH_OP, DIV_CH_OP, DIV_CH_OP, DIV_CH_FM, DIV_CH_FM, DIV_CH_FM, DIV_CH_PULSE, DIV_CH_PULSE, DIV_CH_PULSE, DIV_CH_NOISE, DIV_CH_NOISE, DIV_CH_NOISE, DIV_CH_NOISE, DIV_CH_NOISE, DIV_CH_NOISE, DIV_CH_PCM},
+    {DIV_INS_FM, DIV_INS_FM, DIV_INS_FM, DIV_INS_FM, DIV_INS_FM, DIV_INS_FM, DIV_INS_FM, DIV_INS_FM, DIV_INS_FM, DIV_INS_AY, DIV_INS_AY, DIV_INS_AY, DIV_INS_NULL, DIV_INS_NULL, DIV_INS_NULL, DIV_INS_NULL, DIV_INS_NULL, DIV_INS_NULL, DIV_INS_AMIGA},
+    {},
+    fmHardResetEffectHandler,
+    fmPostEffectHandler
+  );
+
   sysDefs[DIV_SYSTEM_OPL]=new DivSysDef(
     "Yamaha YM3526 (OPL)", NULL, 0x8f, 0, 9, true, false, 0x151, false,
     {"FM 1", "FM 2", "FM 3", "FM 4", "FM 5", "FM 6", "FM 7", "FM 8", "FM 9"},
diff --git a/src/gui/guiConst.cpp b/src/gui/guiConst.cpp
index a3474dce0..a02543aa5 100644
--- a/src/gui/guiConst.cpp
+++ b/src/gui/guiConst.cpp
@@ -836,7 +836,9 @@ const int availableSystems[]={
   DIV_SYSTEM_DUMMY,
   DIV_SYSTEM_SOUND_UNIT,
   DIV_SYSTEM_OPN,
+  DIV_SYSTEM_OPN_EXT,
   DIV_SYSTEM_PC98,
+  DIV_SYSTEM_PC98_EXT,
   DIV_SYSTEM_OPLL,
   DIV_SYSTEM_OPLL_DRUMS,
   DIV_SYSTEM_VRC7,