diff --git a/src/mame/drivers/circusc.c b/src/mame/drivers/circusc.c
index 5d34d258967..28f2c120abf 100644
--- a/src/mame/drivers/circusc.c
+++ b/src/mame/drivers/circusc.c
@@ -52,7 +52,6 @@ To enter service mode, keep 1&2 pressed on reset
 #include "machine/konami1.h"
 #include "cpu/m6809/m6809.h"
 #include "sound/dac.h"
-#include "sound/sn76496.h"
 #include "sound/discrete.h"
 #include "includes/circusc.h"
 
@@ -62,8 +61,6 @@ static MACHINE_START( circusc )
 	circusc_state *state = machine.driver_data<circusc_state>();
 
 	state->m_audiocpu = machine.device<cpu_device>("audiocpu");
-	state->m_sn1 = machine.device("sn1");
-	state->m_sn2 = machine.device("sn2");
 	state->m_dac = machine.device<dac_device>("dac");
 	state->m_discrete = machine.device("fltdisc");
 
@@ -118,12 +115,12 @@ WRITE8_MEMBER(circusc_state::circusc_sound_w)
 
 		/* CS3 */
 		case 1:
-			sn76496_w(m_sn1, 0, m_sn_latch);
+			m_sn_1->write(space, 0, m_sn_latch);
 			break;
 
 		/* CS4 */
 		case 2:
-			sn76496_w(m_sn2, 0, m_sn_latch);
+			m_sn_2->write(space, 0, m_sn_latch);
 			break;
 
 		/* CS5 */
@@ -302,6 +299,24 @@ static GFXDECODE_START( circusc )
 	GFXDECODE_ENTRY( "gfx2", 0, spritelayout, 16*16, 16 )
 GFXDECODE_END
 
+
+/*************************************
+ *
+ *  Sound interface
+ *
+ *************************************/
+ 
+ 
+//-------------------------------------------------
+//  sn76496_config psg_intf
+//-------------------------------------------------
+
+static const sn76496_config psg_intf =
+{
+    DEVCB_NULL
+};
+
+
 static const discrete_mixer_desc circusc_mixer_desc =
 	{DISC_MIXER_IS_RESISTOR,
 		{RES_K(2.2), RES_K(2.2), RES_K(10)},
@@ -371,10 +386,12 @@ static MACHINE_CONFIG_START( circusc, circusc_state )
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")
 
-	MCFG_SOUND_ADD("sn1", SN76496, XTAL_14_31818MHz/8)
+	MCFG_SOUND_ADD("sn1", SN76496_NEW, XTAL_14_31818MHz/8)
+	MCFG_SOUND_CONFIG(psg_intf)
 	MCFG_SOUND_ROUTE_EX(0, "fltdisc", 1.0, 0)
 
-	MCFG_SOUND_ADD("sn2", SN76496, XTAL_14_31818MHz/8)
+	MCFG_SOUND_ADD("sn2", SN76496_NEW, XTAL_14_31818MHz/8)
+	MCFG_SOUND_CONFIG(psg_intf)
 	MCFG_SOUND_ROUTE_EX(0, "fltdisc", 1.0, 1)
 
 	MCFG_DAC_ADD("dac")
diff --git a/src/mame/drivers/gberet.c b/src/mame/drivers/gberet.c
index df21ed3f554..eefcf23e975 100644
--- a/src/mame/drivers/gberet.c
+++ b/src/mame/drivers/gberet.c
@@ -145,7 +145,7 @@ WRITE8_MEMBER(gberet_state::gberet_flipscreen_w)
 
 WRITE8_MEMBER(gberet_state::gberet_sound_w)
 {
-	sn76496_w(machine().device("snsnd"), 0, *m_soundlatch);
+	m_sn->write(space, 0, *m_soundlatch);
 }
 
 static ADDRESS_MAP_START( gberet_map, AS_PROGRAM, 8, gberet_state )
@@ -218,7 +218,7 @@ static ADDRESS_MAP_START( gberetb_map, AS_PROGRAM, 8, gberet_state )
 	AM_RANGE(0xe900, 0xe9ff) AM_RAM AM_SHARE("spriteram")
 	AM_RANGE(0xf000, 0xf000) AM_WRITENOP // coin counter not supported
 	AM_RANGE(0xf200, 0xf200) AM_READ_PORT("DSW2")
-	AM_RANGE(0xf400, 0xf400) AM_DEVWRITE_LEGACY("snsnd", sn76496_w)
+	AM_RANGE(0xf400, 0xf400) AM_DEVWRITE("snsnd", sn76489a_new_device, write)
 	AM_RANGE(0xf600, 0xf600) AM_READ_PORT("P2")
 	AM_RANGE(0xf601, 0xf601) AM_READ_PORT("DSW1")
 	AM_RANGE(0xf602, 0xf602) AM_READ_PORT("P1")
@@ -379,6 +379,23 @@ static GFXDECODE_START( gberetb )
 GFXDECODE_END
 
 
+/*************************************
+ *
+ *  Sound interface
+ *
+ *************************************/
+ 
+ 
+//-------------------------------------------------
+//  sn76496_config psg_intf
+//-------------------------------------------------
+
+static const sn76496_config psg_intf =
+{
+    DEVCB_NULL
+};
+
+
 /*************************************
  *
  *  Machine drivers
@@ -430,8 +447,9 @@ static MACHINE_CONFIG_START( gberet, gberet_state )
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")
 
-	MCFG_SOUND_ADD("snsnd", SN76489A, XTAL_18_432MHz/12) /* type verified on real and bootleg pcb */
+	MCFG_SOUND_ADD("snsnd", SN76489A_NEW, XTAL_18_432MHz/12) /* type verified on real and bootleg pcb */
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+	MCFG_SOUND_CONFIG(psg_intf)
 MACHINE_CONFIG_END
 
 static MACHINE_CONFIG_DERIVED( mrgoemon, gberet )
@@ -469,8 +487,9 @@ static MACHINE_CONFIG_START( gberetb, gberet_state )
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")
 
-	MCFG_SOUND_ADD("snsnd", SN76489A, XTAL_20MHz/12) // divider guessed
+	MCFG_SOUND_ADD("snsnd", SN76489A_NEW, XTAL_20MHz/12) // divider guessed
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+	MCFG_SOUND_CONFIG(psg_intf)
 MACHINE_CONFIG_END
 
 
diff --git a/src/mame/drivers/guab.c b/src/mame/drivers/guab.c
index 668fa9e3166..777b1d1becf 100644
--- a/src/mame/drivers/guab.c
+++ b/src/mame/drivers/guab.c
@@ -76,8 +76,12 @@ class guab_state : public driver_device
 {
 public:
 	guab_state(const machine_config &mconfig, device_type type, const char *tag)
-		: driver_device(mconfig, type, tag) { }
-
+		: driver_device(mconfig, type, tag) ,
+		m_sn(*this, "snsnd") { }
+		
+	/* devices */
+	required_device<sn76489_new_device> m_sn;
+	
 	struct ef9369 m_pal;
 	emu_timer *m_fdc_timer;
 	struct wd1770 m_fdc;
@@ -651,7 +655,7 @@ WRITE16_MEMBER(guab_state::io_w)
 		}
 		case 0x30:
 		{
-			sn76496_w(machine().device("snsnd"), 0, data & 0xff);
+			m_sn->write(space, 0, data & 0xff);
 			break;
 		}
 		case 0x31:
@@ -772,6 +776,23 @@ static INPUT_PORTS_START( tenup )
 INPUT_PORTS_END
 
 
+/*************************************
+ *
+ *  Sound interface
+ *
+ *************************************/
+ 
+ 
+//-------------------------------------------------
+//  sn76496_config psg_intf
+//-------------------------------------------------
+
+static const sn76496_config psg_intf =
+{
+    DEVCB_NULL
+};
+
+
 /*************************************
  *
  *  Machine driver
@@ -813,8 +834,9 @@ static MACHINE_CONFIG_START( guab, guab_state )
 	MCFG_SPEAKER_STANDARD_MONO("mono")
 
 	/* TODO: Verify clock */
-	MCFG_SOUND_ADD("snsnd", SN76489, 2000000)
+	MCFG_SOUND_ADD("snsnd", SN76489_NEW, 2000000)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+	MCFG_SOUND_CONFIG(psg_intf)
 
 	/* 6840 PTM */
 	MCFG_PTM6840_ADD("6840ptm", ptm_intf)
diff --git a/src/mame/drivers/homedata.c b/src/mame/drivers/homedata.c
index 18841b56d43..c2ef47f023b 100644
--- a/src/mame/drivers/homedata.c
+++ b/src/mame/drivers/homedata.c
@@ -222,7 +222,6 @@ Custom: GX61A01
 #include "includes/homedata.h"
 #include "sound/dac.h"
 #include "sound/2203intf.h"
-#include "sound/sn76496.h"
 
 static INTERRUPT_GEN( homedata_irq )
 {
@@ -499,7 +498,7 @@ WRITE8_MEMBER(homedata_state::pteacher_upd7807_portc_w)
 	coin_counter_w(machine(), 0, ~data & 0x80);
 
 	if (BIT(m_upd7807_portc, 5) && !BIT(data, 5))	/* clock 1->0 */
-		sn76496_w(m_sn, 0, m_upd7807_porta);
+		m_sn->write(space, 0, m_upd7807_porta);
 
 	m_upd7807_portc = data;
 }
@@ -537,7 +536,7 @@ static ADDRESS_MAP_START( mrokumei_map, AS_PROGRAM, 8, homedata_state )
 	AM_RANGE(0x8000, 0x8000) AM_WRITE(mrokumei_blitter_start_w)	// in some games also ROM bank switch to access service ROM
 	AM_RANGE(0x8001, 0x8001) AM_WRITE(mrokumei_keyboard_select_w)
 	AM_RANGE(0x8002, 0x8002) AM_WRITE(mrokumei_sound_cmd_w)
-	AM_RANGE(0x8003, 0x8003) AM_DEVWRITE_LEGACY("snsnd", sn76496_w)
+	AM_RANGE(0x8003, 0x8003) AM_DEVWRITE("snsnd", sn76489a_new_device, write)
 	AM_RANGE(0x8006, 0x8006) AM_WRITE(homedata_blitter_param_w)
 	AM_RANGE(0x8007, 0x8007) AM_WRITE(mrokumei_blitter_bank_w)
 	AM_RANGE(0x8000, 0xffff) AM_ROM
@@ -1124,6 +1123,22 @@ static GFXDECODE_START( lemnangl )
 GFXDECODE_END
 
 
+/*************************************
+ *
+ *  Sound interface
+ *
+ *************************************/
+ 
+ 
+//-------------------------------------------------
+//  sn76496_config psg_intf
+//-------------------------------------------------
+
+static const sn76496_config psg_intf =
+{
+    DEVCB_NULL
+};
+
 
 static MACHINE_START( homedata )
 {
@@ -1132,7 +1147,7 @@ static MACHINE_START( homedata )
 	state->m_maincpu = machine.device("maincpu");
 	state->m_audiocpu = machine.device("audiocpu");
 	state->m_ym = machine.device("ymsnd");
-	state->m_sn = machine.device("snsnd");
+	state->m_sn = machine.device<sn76489a_new_device>("snsnd");
 	state->m_dac = machine.device<dac_device>("dac");
 
 	state->save_item(NAME(state->m_visible_page));
@@ -1265,8 +1280,9 @@ static MACHINE_CONFIG_START( mrokumei, homedata_state )
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")
 
-	MCFG_SOUND_ADD("snsnd", SN76489A, 16000000/4)     // SN76489AN actually
+	MCFG_SOUND_ADD("snsnd", SN76489A_NEW, 16000000/4)     // SN76489AN actually
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+	MCFG_SOUND_CONFIG(psg_intf)
 
 	MCFG_DAC_ADD("dac")
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
@@ -1384,8 +1400,9 @@ static MACHINE_CONFIG_START( pteacher, homedata_state )
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")
 
-	MCFG_SOUND_ADD("snsnd", SN76489A, 16000000/4)     // SN76489AN actually
+	MCFG_SOUND_ADD("snsnd", SN76489A_NEW, 16000000/4)     // SN76489AN actually
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+	MCFG_SOUND_CONFIG(psg_intf)
 
 	MCFG_DAC_ADD("dac")
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
diff --git a/src/mame/drivers/lasso.c b/src/mame/drivers/lasso.c
index b4f2ad77690..7f8126bb4b2 100644
--- a/src/mame/drivers/lasso.c
+++ b/src/mame/drivers/lasso.c
@@ -32,7 +32,6 @@ DIP locations verified for:
 #include "cpu/m6502/m6502.h"
 #include "cpu/z80/z80.h"
 #include "sound/dac.h"
-#include "sound/sn76496.h"
 #include "sound/ay8910.h"
 #include "includes/lasso.h"
 
@@ -69,10 +68,10 @@ WRITE8_MEMBER(lasso_state::sound_select_w)
 	UINT8 to_write = BITSWAP8(*m_chip_data, 0, 1, 2, 3, 4, 5, 6, 7);
 
 	if (~data & 0x01)	/* chip #0 */
-		sn76496_w(m_sn_1, 0, to_write);
+		m_sn_1->write(space, 0, to_write);
 
 	if (~data & 0x02)	/* chip #1 */
-		sn76496_w(m_sn_2, 0, to_write);
+		m_sn_2->write(space, 0, to_write);
 }
 
 
@@ -459,6 +458,22 @@ static GFXDECODE_START( pinbo )
 GFXDECODE_END
 
 
+/*************************************
+ *
+ *  Sound interface
+ *
+ *************************************/
+ 
+ 
+//-------------------------------------------------
+//  sn76496_config psg_intf
+//-------------------------------------------------
+
+static const sn76496_config psg_intf =
+{
+    DEVCB_NULL
+};
+
 
 static MACHINE_START( lasso )
 {
@@ -466,9 +481,7 @@ static MACHINE_START( lasso )
 
 	state->m_maincpu = machine.device("maincpu");
 	state->m_audiocpu = machine.device("audiocpu");
-	state->m_sn_1 = machine.device("sn76489.1");
-	state->m_sn_2 = machine.device("sn76489.2");
-
+	
 	state->save_item(NAME(state->m_gfxbank));
 }
 
@@ -529,11 +542,13 @@ static MACHINE_CONFIG_START( base, lasso_state )
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")
 
-	MCFG_SOUND_ADD("sn76489.1", SN76489, 2000000)
+	MCFG_SOUND_ADD("sn76489.1", SN76489_NEW, 2000000)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+	MCFG_SOUND_CONFIG(psg_intf)
 
-	MCFG_SOUND_ADD("sn76489.2", SN76489, 2000000)
+	MCFG_SOUND_ADD("sn76489.2", SN76489_NEW, 2000000)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+	MCFG_SOUND_CONFIG(psg_intf)
 MACHINE_CONFIG_END
 
 static MACHINE_CONFIG_DERIVED( lasso, base )
diff --git a/src/mame/drivers/segag80r.c b/src/mame/drivers/segag80r.c
index bf7ea0a245b..da6e2213fe4 100644
--- a/src/mame/drivers/segag80r.c
+++ b/src/mame/drivers/segag80r.c
@@ -301,13 +301,11 @@ WRITE8_MEMBER(segag80r_state::sindbadm_misc_w)
 /* the data lines are flipped */
 WRITE8_MEMBER(segag80r_state::sindbadm_sn1_SN76496_w)
 {
-	device_t *device = machine().device("sn1");
-	sn76496_w(device, offset, BITSWAP8(data, 0,1,2,3,4,5,6,7));
+		m_sn1->write(space, offset, BITSWAP8(data, 0,1,2,3,4,5,6,7));
 }
 WRITE8_MEMBER(segag80r_state::sindbadm_sn2_SN76496_w)
 {
-	device_t *device = machine().device("sn2");
-	sn76496_w(device, offset, BITSWAP8(data, 0,1,2,3,4,5,6,7));
+		m_sn2->write(space, offset, BITSWAP8(data, 0,1,2,3,4,5,6,7));
 }
 
 
@@ -816,6 +814,22 @@ static GFXDECODE_START( monsterb )
 GFXDECODE_END
 
 
+/*************************************
+ *
+ *  Sound interface
+ *
+ *************************************/
+ 
+ 
+//-------------------------------------------------
+//  sn76496_config psg_intf
+//-------------------------------------------------
+
+static const sn76496_config psg_intf =
+{
+    DEVCB_NULL
+};
+
 
 /*************************************
  *
@@ -934,11 +948,13 @@ static MACHINE_CONFIG_DERIVED( sindbadm, g80r_base )
 	MCFG_CPU_PERIODIC_INT(irq0_line_hold,4*60)
 
 	/* sound hardware */
-	MCFG_SOUND_ADD("sn1", SN76496, SINDBADM_SOUND_CLOCK/4)
+	MCFG_SOUND_ADD("sn1", SN76496_NEW, SINDBADM_SOUND_CLOCK/4)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+	MCFG_SOUND_CONFIG(psg_intf)
 
-	MCFG_SOUND_ADD("sn2", SN76496, SINDBADM_SOUND_CLOCK/2)
+	MCFG_SOUND_ADD("sn2", SN76496_NEW, SINDBADM_SOUND_CLOCK/2)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+	MCFG_SOUND_CONFIG(psg_intf)
 MACHINE_CONFIG_END
 
 
diff --git a/src/mame/drivers/spcforce.c b/src/mame/drivers/spcforce.c
index f6a18a6c3c3..a4ee6768313 100644
--- a/src/mame/drivers/spcforce.c
+++ b/src/mame/drivers/spcforce.c
@@ -36,7 +36,6 @@ TODO:
 #include "emu.h"
 #include "cpu/i8085/i8085.h"
 #include "cpu/mcs48/mcs48.h"
-#include "sound/sn76496.h"
 #include "includes/spcforce.h"
 
 
@@ -49,9 +48,10 @@ WRITE8_MEMBER(spcforce_state::spcforce_SN76496_latch_w)
 READ8_MEMBER(spcforce_state::spcforce_SN76496_select_r)
 {
 
-	if (~m_sn76496_select & 0x40) return sn76496_ready_r(machine().device("sn1"));
-	if (~m_sn76496_select & 0x20) return sn76496_ready_r(machine().device("sn2"));
-	if (~m_sn76496_select & 0x10) return sn76496_ready_r(machine().device("sn3"));
+	   if (~m_sn76496_select & 0x40) return m_sn1->ready_r();
+       if (~m_sn76496_select & 0x20) return m_sn2->ready_r();
+       if (~m_sn76496_select & 0x10) return m_sn3->ready_r();
+
 
 	return 0;
 }
@@ -61,9 +61,10 @@ WRITE8_MEMBER(spcforce_state::spcforce_SN76496_select_w)
 
 	m_sn76496_select = data;
 
-	if (~data & 0x40) sn76496_w(machine().device("sn1"), 0, m_sn76496_latch);
-	if (~data & 0x20) sn76496_w(machine().device("sn2"), 0, m_sn76496_latch);
-	if (~data & 0x10) sn76496_w(machine().device("sn3"), 0, m_sn76496_latch);
+	if (~data & 0x40) m_sn1->write(space, 0, m_sn76496_latch);
+    if (~data & 0x20) m_sn2->write(space, 0, m_sn76496_latch);
+    if (~data & 0x10) m_sn3->write(space, 0, m_sn76496_latch);
+
 }
 
 READ8_MEMBER(spcforce_state::spcforce_t0_r)
@@ -241,6 +242,17 @@ static PALETTE_INIT( spcforce )
 	}
 }
 
+
+//-------------------------------------------------
+//  sn76496_config psg_intf
+//-------------------------------------------------
+
+static const sn76496_config psg_intf =
+{
+    DEVCB_NULL
+};
+
+
 static INTERRUPT_GEN( vblank_irq )
 {
 	spcforce_state *state = device->machine().driver_data<spcforce_state>();
@@ -277,14 +289,17 @@ static MACHINE_CONFIG_START( spcforce, spcforce_state )
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")
 
-	MCFG_SOUND_ADD("sn1", SN76496, 2000000)
+	MCFG_SOUND_ADD("sn1", SN76496_NEW, 2000000)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+	MCFG_SOUND_CONFIG(psg_intf)
 
-	MCFG_SOUND_ADD("sn2", SN76496, 2000000)
+	MCFG_SOUND_ADD("sn2", SN76496_NEW, 2000000)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+	MCFG_SOUND_CONFIG(psg_intf)
 
-	MCFG_SOUND_ADD("sn3", SN76496, 2000000)
+	MCFG_SOUND_ADD("sn3", SN76496_NEW, 2000000)
 	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
+	MCFG_SOUND_CONFIG(psg_intf)
 MACHINE_CONFIG_END
 
 
diff --git a/src/mame/includes/circusc.h b/src/mame/includes/circusc.h
index d1a3a443751..88ac954b7c9 100644
--- a/src/mame/includes/circusc.h
+++ b/src/mame/includes/circusc.h
@@ -5,6 +5,7 @@
 *************************************************************************/
 
 #include "sound/dac.h"
+#include "sound/sn76496.h"
 
 class circusc_state : public driver_device
 {
@@ -16,7 +17,9 @@ public:
 		m_colorram(*this, "colorram"),
 		m_videoram(*this, "videoram"),
 		m_spriteram_2(*this, "spriteram_2"),
-		m_spriteram(*this, "spriteram"){ }
+		m_spriteram(*this, "spriteram"),
+		m_sn_1(*this, "sn1"),
+		m_sn_2(*this, "sn2"){ }
 
 	/* memory pointers */
 	required_shared_ptr<UINT8> m_spritebank;
@@ -34,8 +37,8 @@ public:
 
 	/* devices */
 	cpu_device *m_audiocpu;
-	device_t *m_sn1;
-	device_t *m_sn2;
+	required_device<sn76496_new_device> m_sn_1;
+	required_device<sn76496_new_device> m_sn_2;
 	dac_device *m_dac;
 	device_t *m_discrete;
 
diff --git a/src/mame/includes/gberet.h b/src/mame/includes/gberet.h
index e5821be6e8c..389389c9ecd 100644
--- a/src/mame/includes/gberet.h
+++ b/src/mame/includes/gberet.h
@@ -4,6 +4,8 @@
 
 ***************************************************************************/
 
+#include "sound/sn76496.h"
+
 class gberet_state : public driver_device
 {
 public:
@@ -14,7 +16,8 @@ public:
 		m_spriteram2(*this, "spriteram2"),
 		m_spriteram(*this, "spriteram"),
 		m_scrollram(*this, "scrollram"),
-		m_soundlatch(*this, "soundlatch"){ }
+		m_soundlatch(*this, "soundlatch"),
+		m_sn(*this, "snsnd") { }
 
 	/* memory pointers */
 	required_shared_ptr<UINT8> m_colorram;
@@ -23,6 +26,9 @@ public:
 	required_shared_ptr<UINT8> m_spriteram;
 	optional_shared_ptr<UINT8> m_scrollram;
 	optional_shared_ptr<UINT8> m_soundlatch;
+	
+	/* devices */
+	required_device<sn76489a_new_device> m_sn;
 
 	/* video-related */
 	tilemap_t * m_bg_tilemap;
diff --git a/src/mame/includes/homedata.h b/src/mame/includes/homedata.h
index 08fb176fcbf..9371740906e 100644
--- a/src/mame/includes/homedata.h
+++ b/src/mame/includes/homedata.h
@@ -1,4 +1,5 @@
 #include "sound/dac.h"
+#include "sound/sn76496.h"
 
 class homedata_state : public driver_device
 {
@@ -6,7 +7,7 @@ public:
 	homedata_state(const machine_config &mconfig, device_type type, const char *tag)
 		: driver_device(mconfig, type, tag) ,
 		m_vreg(*this, "vreg"),
-		m_videoram(*this, "videoram"){ }
+		m_videoram(*this, "videoram") {}
 
 	/* memory pointers */
 	optional_shared_ptr<UINT8> m_vreg;
@@ -39,7 +40,7 @@ public:
 	device_t *m_audiocpu;
 	dac_device *m_dac;
 	device_t *m_ym;
-	device_t *m_sn;
+	sn76489a_new_device *m_sn;
 	UINT8 m_prot_data;
 	DECLARE_READ8_MEMBER(mrokumei_keyboard_r);
 	DECLARE_WRITE8_MEMBER(mrokumei_keyboard_select_w);
diff --git a/src/mame/includes/lasso.h b/src/mame/includes/lasso.h
index e2ae9c242aa..069880fb2f0 100644
--- a/src/mame/includes/lasso.h
+++ b/src/mame/includes/lasso.h
@@ -4,6 +4,8 @@
 
 ***************************************************************************/
 
+#include "sound/sn76496.h"
+
 class lasso_state : public driver_device
 {
 public:
@@ -16,7 +18,9 @@ public:
 		m_chip_data(*this, "chip_data"),
 		m_bitmap_ram(*this, "bitmap_ram"),
 		m_last_colors(*this, "last_colors"),
-		m_track_scroll(*this, "track_scroll"){ }
+		m_track_scroll(*this, "track_scroll"),
+		m_sn_1(*this, "sn76489.1"),
+		m_sn_2(*this, "sn76489.2"){ }
 
 	/* memory pointers */
 	required_shared_ptr<UINT8> m_videoram;
@@ -37,8 +41,8 @@ public:
 	/* devices */
 	device_t *m_maincpu;
 	device_t *m_audiocpu;
-	device_t *m_sn_1;
-	device_t *m_sn_2;
+	optional_device<sn76489_new_device> m_sn_1;
+	optional_device<sn76489_new_device> m_sn_2;
 	DECLARE_WRITE8_MEMBER(sound_command_w);
 	DECLARE_WRITE8_MEMBER(pinbo_sound_command_w);
 	DECLARE_READ8_MEMBER(sound_status_r);
diff --git a/src/mame/includes/segag80r.h b/src/mame/includes/segag80r.h
index 1a6ed0d4b24..b7d614275dc 100644
--- a/src/mame/includes/segag80r.h
+++ b/src/mame/includes/segag80r.h
@@ -5,6 +5,7 @@
 *************************************************************************/
 
 #include "machine/segag80.h"
+#include "sound/sn76496.h"
 
 class segag80r_state : public driver_device
 {
@@ -12,10 +13,15 @@ public:
 	segag80r_state(const machine_config &mconfig, device_type type, const char *tag)
 		: driver_device(mconfig, type, tag) ,
 		m_mainram(*this, "mainram"),
-		m_videoram(*this, "videoram"){ }
-
+		m_videoram(*this, "videoram"),
+		m_sn1(*this, "sn1"),
+		m_sn2(*this, "sn2"){ }
+		
 	required_shared_ptr<UINT8> m_mainram;
 	required_shared_ptr<UINT8> m_videoram;
+	
+	optional_device<sn76496_new_device> m_sn1;
+	optional_device<sn76496_new_device> m_sn2;
 
 	UINT8 m_sound_state[2];
 	UINT8 m_sound_rate;
diff --git a/src/mame/includes/spcforce.h b/src/mame/includes/spcforce.h
index 78b9251dca3..60272ef52af 100644
--- a/src/mame/includes/spcforce.h
+++ b/src/mame/includes/spcforce.h
@@ -1,3 +1,5 @@
+#include "sound/sn76496.h"
+
 class spcforce_state : public driver_device
 {
 public:
@@ -5,12 +7,20 @@ public:
 		: driver_device(mconfig, type, tag) ,
 		m_scrollram(*this, "scrollram"),
 		m_videoram(*this, "videoram"),
-		m_colorram(*this, "colorram"){ }
+		m_colorram(*this, "colorram"),
+        m_sn1(*this, "sn1"),
+        m_sn2(*this, "sn2"),
+        m_sn3(*this, "sn3"){ }
+
 
 	required_shared_ptr<UINT8> m_scrollram;
 	required_shared_ptr<UINT8> m_videoram;
 	required_shared_ptr<UINT8> m_colorram;
 
+	required_device<sn76496_new_device> m_sn1; 
+    required_device<sn76496_new_device> m_sn2;
+    required_device<sn76496_new_device> m_sn3;
+
 	int m_sn76496_latch;
 	int m_sn76496_select;