From 0c6f54ac0e8656c9087fe3dd136984be9d0fc169 Mon Sep 17 00:00:00 2001
From: TC1995 <mariogplayer90@gmail.com>
Date: Wed, 5 Jun 2024 22:10:26 +0200
Subject: [PATCH] Ported the "latest" YMFM changes.

To 86box.
---
 src/sound/ymfm/ymfm.h      | 3 +++
 src/sound/ymfm/ymfm_fm.ipp | 2 +-
 src/sound/ymfm/ymfm_ssg.h  | 2 ++
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/sound/ymfm/ymfm.h b/src/sound/ymfm/ymfm.h
index 4f8ba1243..c5986d66b 100644
--- a/src/sound/ymfm/ymfm.h
+++ b/src/sound/ymfm/ymfm.h
@@ -485,6 +485,8 @@ public:
 class ymfm_engine_callbacks
 {
 public:
+    virtual ~ymfm_engine_callbacks() = default;
+
 	// timer callback; called by the interface when a timer fires
 	virtual void engine_timer_expired(uint32_t tnum) = 0;
 
@@ -506,6 +508,7 @@ class ymfm_interface
 	template<typename RegisterType> friend class fm_engine_base;
 
 public:
+	virtual ~ymfm_interface() = default;
 	// the following functions must be implemented by any derived classes; the
 	// default implementations are sufficient for some minimal operation, but will
 	// likely need to be overridden to integrate with the outside world; they are
diff --git a/src/sound/ymfm/ymfm_fm.ipp b/src/sound/ymfm/ymfm_fm.ipp
index 55cdd643d..a3ee8d333 100644
--- a/src/sound/ymfm/ymfm_fm.ipp
+++ b/src/sound/ymfm/ymfm_fm.ipp
@@ -1518,7 +1518,7 @@ void fm_engine_base<RegisterType>::engine_timer_expired(uint32_t tnum)
 		for (uint32_t chnum = 0; chnum < CHANNELS; chnum++)
 			if (bitfield(RegisterType::CSM_TRIGGER_MASK, chnum))
 			{
-				m_channel[chnum]->keyonoff(1, KEYON_CSM, chnum);
+				m_channel[chnum]->keyonoff(0xf, KEYON_CSM, chnum);
 				m_modified_channels |= 1 << chnum;
 			}
 
diff --git a/src/sound/ymfm/ymfm_ssg.h b/src/sound/ymfm/ymfm_ssg.h
index 749ad146f..cb7ec9e7c 100644
--- a/src/sound/ymfm/ymfm_ssg.h
+++ b/src/sound/ymfm/ymfm_ssg.h
@@ -49,6 +49,8 @@ namespace ymfm
 class ssg_override
 {
 public:
+	virtual ~ssg_override() = default;
+
 	// reset our status
 	virtual void ssg_reset() = 0;