From fca4d40e6df330ffb1b05260066a301e9258e798 Mon Sep 17 00:00:00 2001
From: Angelo Salese <angelosa@users.noreply.github.com>
Date: Sun, 27 Oct 2013 20:50:28 +0000
Subject: [PATCH] Preliminary Master volume control for Deco MLC HW [Angelo
 Salese]

---
 src/emu/sound/ymz280b.c      | 4 ++--
 src/mame/drivers/deco_mlc.c  | 5 +++--
 src/mame/includes/deco_mlc.h | 6 +++++-
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/src/emu/sound/ymz280b.c b/src/emu/sound/ymz280b.c
index e465ce8ff7a..d5fb23359f9 100644
--- a/src/emu/sound/ymz280b.c
+++ b/src/emu/sound/ymz280b.c
@@ -89,14 +89,14 @@ void ymz280b_device::update_irq_state()
 		m_irq_state = 1;
 		if (!m_irq_handler.isnull())
 			m_irq_handler(1);
-		else logerror("YMZ280B: IRQ generated, but no callback specified!");
+		else logerror("YMZ280B: IRQ generated, but no callback specified!\n");
 	}
 	else if (!irq_bits && m_irq_state)
 	{
 		m_irq_state = 0;
 		if (!m_irq_handler.isnull())
 			m_irq_handler(0);
-		else logerror("YMZ280B: IRQ generated, but no callback specified!");
+		else logerror("YMZ280B: IRQ generated, but no callback specified!\n");
 	}
 }
 
diff --git a/src/mame/drivers/deco_mlc.c b/src/mame/drivers/deco_mlc.c
index 683607e1890..a4b668d7414 100644
--- a/src/mame/drivers/deco_mlc.c
+++ b/src/mame/drivers/deco_mlc.c
@@ -100,7 +100,6 @@
 #include "emu.h"
 #include "includes/decocrpt.h"
 #include "machine/eepromser.h"
-#include "sound/ymz280b.h"
 #include "cpu/arm/arm.h"
 #include "cpu/sh2/sh2.h"
 #include "includes/deco_mlc.h"
@@ -179,7 +178,9 @@ WRITE32_MEMBER(deco_mlc_state::avengrs_eprom_w)
 //      }
 	}
 	else if (ACCESSING_BITS_0_7) {
-		//volume control todo
+		/* Master volume control (TODO: probably logaritmic) */
+		m_ymz->set_output_gain(0, (255.0 - data) / 255.0);
+		m_ymz->set_output_gain(1, (255.0 - data) / 255.0);
 	}
 	else
 		logerror("%s:  eprom_w %08x mask %08x\n",machine().describe_context(),data,mem_mask);
diff --git a/src/mame/includes/deco_mlc.h b/src/mame/includes/deco_mlc.h
index a3d35889136..4a213cab8b7 100644
--- a/src/mame/includes/deco_mlc.h
+++ b/src/mame/includes/deco_mlc.h
@@ -1,5 +1,6 @@
 #include "machine/eepromser.h"
 #include "machine/deco146.h"
+#include "sound/ymz280b.h"
 
 class deco_mlc_state : public driver_device
 {
@@ -12,7 +13,9 @@ public:
 		m_mlc_clip_ram(*this, "mlc_clip_ram"),
 		m_mlc_vram(*this, "mlc_vram"),
 		m_maincpu(*this, "maincpu"),
-		m_eeprom(*this, "eeprom") { }
+		m_eeprom(*this, "eeprom"),
+		m_ymz(*this, "ymz")
+		{ }
 
 	optional_device<deco146_device> m_deco146;
 	required_shared_ptr<UINT32> m_mlc_ram;
@@ -63,6 +66,7 @@ public:
 	void descramble_sound(  );
 	required_device<cpu_device> m_maincpu;
 	required_device<eeprom_serial_93cxx_device> m_eeprom;
+	required_device<ymz280b_device> m_ymz;
 
 	DECLARE_READ16_MEMBER( sh96_protection_region_0_146_r );
 	DECLARE_WRITE16_MEMBER( sh96_protection_region_0_146_w );