From 300a85baae6b1f0ded5f74f558d4ead333df157b Mon Sep 17 00:00:00 2001
From: Angelo Salese <angelosa@users.noreply.github.com>
Date: Mon, 20 Dec 2010 16:12:07 +0000
Subject: [PATCH] Added sound comms in Raiden 2, giving working sound to it
 [Angelo Salese]

---
 src/mame/drivers/raiden2.c  | 24 ++++++++++++++++++++++++
 src/mame/includes/raiden2.h |  3 +++
 2 files changed, 27 insertions(+)

diff --git a/src/mame/drivers/raiden2.c b/src/mame/drivers/raiden2.c
index da2ecf6975a..28ffd3d789c 100644
--- a/src/mame/drivers/raiden2.c
+++ b/src/mame/drivers/raiden2.c
@@ -795,6 +795,28 @@ static MACHINE_RESET(raiden2)
 	//cop_init();
 }
 
+READ16_MEMBER(raiden2_state::raiden2_sound_comms_r)
+{
+	switch(offset)
+	{
+		case (0x008/2):	return seibu_main_word_r(&space,2,0xffff);
+		case (0x00c/2):	return seibu_main_word_r(&space,3,0xffff);
+		case (0x014/2): return seibu_main_word_r(&space,5,0xffff);
+	}
+
+	return 0xffff;
+}
+
+WRITE16_MEMBER(raiden2_state::raiden2_sound_comms_w)
+{
+	switch(offset)
+	{
+		case (0x000/2):	{ seibu_main_word_w(&space,0,data,0x00ff); break; }
+		case (0x004/2):	{ seibu_main_word_w(&space,1,data,0x00ff); break; }
+		case (0x010/2):	{ seibu_main_word_w(&space,4,data,0x00ff); break; }
+		case (0x018/2):	{ seibu_main_word_w(&space,6,data,0x00ff); break; }
+	}
+}
 
 
 /* MEMORY MAPS */
@@ -839,6 +861,8 @@ static ADDRESS_MAP_START( raiden2_mem, ADDRESS_SPACE_PROGRAM, 16, raiden2_state
 	AM_RANGE(0x006ce, 0x006cf) AM_WRITE(sprcpt_flags_2_w)
 	AM_RANGE(0x006fc, 0x006fd) AM_WRITE(cop_dma_trigger_w)
 
+	AM_RANGE(0x00700, 0x0071f) AM_READWRITE(raiden2_sound_comms_r,raiden2_sound_comms_w)
+
 	AM_RANGE(0x00740, 0x00741) AM_READ_PORT("DSW")
 	AM_RANGE(0x00744, 0x00745) AM_READ_PORT("CONTROLS")
 	AM_RANGE(0x0074c, 0x0074d) AM_READ_PORT("SYSTEM")
diff --git a/src/mame/includes/raiden2.h b/src/mame/includes/raiden2.h
index 696420386c0..effbb9041fb 100644
--- a/src/mame/includes/raiden2.h
+++ b/src/mame/includes/raiden2.h
@@ -56,6 +56,9 @@ public:
 	DECLARE_READ16_MEMBER( rdx_v33_unknown2_r );
 	DECLARE_READ16_MEMBER( nzerotea_unknown_r );
 
+	DECLARE_READ16_MEMBER( raiden2_sound_comms_r );
+	DECLARE_WRITE16_MEMBER( raiden2_sound_comms_w );
+
 	void common_reset();
 
 	tilemap_t *background_layer,*midground_layer,*foreground_layer,*text_layer;