diff --git a/src/emu/sndintrf.c b/src/emu/sndintrf.c
index f841e3dec3d..33215436560 100644
--- a/src/emu/sndintrf.c
+++ b/src/emu/sndintrf.c
@@ -108,6 +108,8 @@ void namcona_get_info(void *token, UINT32 state, sndinfo *info);
 void tms36xx_get_info(void *token, UINT32 state, sndinfo *info);
 void tms3615_get_info(void *token, UINT32 state, sndinfo *info);
 void tms5110_get_info(void *token, UINT32 state, sndinfo *info);
+void tms0285_get_info(void *token, UINT32 state, sndinfo *info);
+void tms5200_get_info(void *token, UINT32 state, sndinfo *info);
 void tms5220_get_info(void *token, UINT32 state, sndinfo *info);
 void vlm5030_get_info(void *token, UINT32 state, sndinfo *info);
 void adpcm_get_info(void *token, UINT32 state, sndinfo *info);
@@ -287,6 +289,12 @@ static const struct
 #if (HAS_TMS5110)
 	{ SOUND_TMS5110, tms5110_get_info },
 #endif
+#if (HAS_TMS0285)
+	{ SOUND_TMS0285, tms0285_get_info },
+#endif
+#if (HAS_TMS5200)
+	{ SOUND_TMS5200, tms5200_get_info },
+#endif
 #if (HAS_TMS5220)
 	{ SOUND_TMS5220, tms5220_get_info },
 #endif
diff --git a/src/emu/sndintrf.h b/src/emu/sndintrf.h
index d82728ebe02..3279075f954 100644
--- a/src/emu/sndintrf.h
+++ b/src/emu/sndintrf.h
@@ -73,6 +73,8 @@ enum _sound_type
 	SOUND_TMS36XX,
 	SOUND_TMS3615,
 	SOUND_TMS5110,
+	SOUND_TMS0285,
+	SOUND_TMS5200,
 	SOUND_TMS5220,
 	SOUND_VLM5030,
 	SOUND_OKIM6295,
diff --git a/src/emu/sound/5220intf.c b/src/emu/sound/5220intf.c
index 2f0c581f6f1..826febd6c6b 100644
--- a/src/emu/sound/5220intf.c
+++ b/src/emu/sound/5220intf.c
@@ -73,6 +73,14 @@ static void *tms5220_start(int sndindex, int clock, const void *config)
 }
 
 
+static void *tms5200_start(int sndindex, int clock, const void *config)
+{
+	struct tms5220_info *info = tms5220_start(sndindex, clock, config);
+	tms5220_set_variant(info->chip, variant_tms0285);
+	return info;
+}
+
+
 
 /**********************************************************************************************
 
@@ -244,6 +252,7 @@ void tms5220_get_info(void *token, UINT32 state, sndinfo *info)
 	switch (state)
 	{
 		/* --- the following bits of info are returned as 64-bit signed integers --- */
+		case SNDINFO_INT_ALIAS:							info->i = SOUND_TMS5220;				break;
 
 		/* --- the following bits of info are returned as pointers to data or functions --- */
 		case SNDINFO_PTR_SET_INFO:						info->set_info = tms5220_set_info;		break;
@@ -260,3 +269,23 @@ void tms5220_get_info(void *token, UINT32 state, sndinfo *info)
 	}
 }
 
+void tms0285_get_info(void *token, UINT32 state, sndinfo *info)
+{
+	switch (state)
+	{
+		case SNDINFO_PTR_START:							info->start = tms5200_start;			break;
+		case SNDINFO_STR_NAME:							info->s = "TMS0285";					break;
+		default: 										tms5220_get_info(token, state, info);	break;
+	}
+}
+
+void tms5200_get_info(void *token, UINT32 state, sndinfo *info)
+{
+	switch (state)
+	{
+		case SNDINFO_PTR_START:							info->start = tms5200_start;			break;
+		case SNDINFO_STR_NAME:							info->s = "TMS5200";					break;
+		default: 										tms5220_get_info(token, state, info);	break;
+	}
+}
+
diff --git a/src/emu/sound/sound.mak b/src/emu/sound/sound.mak
index 0e64486038b..ad2211be567 100644
--- a/src/emu/sound/sound.mak
+++ b/src/emu/sound/sound.mak
@@ -581,13 +581,15 @@ endif
 #-------------------------------------------------
 
 SOUNDDEFS += -DHAS_TMS5110=$(if $(filter TMS5110,$(SOUNDS)),1,0)
+SOUNDDEFS += -DHAS_TMS0285=$(if $(filter TMS0285,$(SOUNDS)),1,0)
+SOUNDDEFS += -DHAS_TMS5200=$(if $(filter TMS5200,$(SOUNDS)),1,0)
 SOUNDDEFS += -DHAS_TMS5220=$(if $(filter TMS5220,$(SOUNDS)),1,0)
 
 ifneq ($(filter TMS5110,$(SOUNDS)),)
 SOUNDOBJS += $(SOUNDOBJ)/tms5110.o $(SOUNDOBJ)/5110intf.o
 endif
 
-ifneq ($(filter TMS5220,$(SOUNDS)),)
+ifneq ($(filter TMS0285 TMS5200 TMS5220,$(SOUNDS)),)
 SOUNDOBJS += $(SOUNDOBJ)/tms5220.o $(SOUNDOBJ)/5220intf.o
 endif
 
diff --git a/src/mame/audio/mcr.c b/src/mame/audio/mcr.c
index 60834cd280e..24785dc38e7 100644
--- a/src/mame/audio/mcr.c
+++ b/src/mame/audio/mcr.c
@@ -25,11 +25,11 @@
  *
  *************************************/
 
-#define SSIO_CLOCK			16000000
-#define CSDELUXE_CLOCK		15000000
-#define SOUNDSGOOD_CLOCK	16000000
-#define TURBOCS_CLOCK		8000000
-#define SQUAWKTALK_CLOCK	3580000
+#define SSIO_CLOCK			XTAL_16MHz
+#define CSDELUXE_CLOCK		XTAL_16MHz
+#define SOUNDSGOOD_CLOCK	XTAL_16MHz
+#define TURBOCS_CLOCK		XTAL_8MHz
+#define SQUAWKTALK_CLOCK	XTAL_3_579545MHz
 
 
 
@@ -791,7 +791,7 @@ static const pia6821_interface turbocs_pia_intf =
 
 /********* machine driver ***********/
 MACHINE_DRIVER_START(turbo_chip_squeak)
-	MDRV_CPU_ADD_TAG("tcs", M6809, TURBOCS_CLOCK/4)
+	MDRV_CPU_ADD_TAG("tcs", M6809E, TURBOCS_CLOCK)
 	MDRV_CPU_PROGRAM_MAP(turbocs_map,0)
 
 	MDRV_SPEAKER_STANDARD_MONO("mono")
@@ -818,7 +818,7 @@ MACHINE_DRIVER_END
  *
  *  MCR Squawk n Talk communications
  *
- *  MC6802, 2 PIAs, TMS5220, AY8912 (not used), 8-bit DAC (not used)
+ *  MC6802, 2 PIAs, TMS5200, AY8912 (not used), 8-bit DAC (not used)
  *
  *************************************/
 
@@ -840,10 +840,10 @@ static WRITE8_HANDLER( squawkntalk_porta2_w )
 
 static WRITE8_HANDLER( squawkntalk_portb2_w )
 {
-	/* bits 0-1 select read/write strobes on the TMS5220 */
+	/* bits 0-1 select read/write strobes on the TMS5200 */
 	data &= 0x03;
 
-	/* write strobe -- pass the current command to the TMS5220 */
+	/* write strobe -- pass the current command to the TMS5200 */
 	if (((data ^ squawkntalk_tms_strobes) & 0x02) && !(data & 0x02))
 	{
 		tms5220_data_w(offset, squawkntalk_tms_command);
@@ -853,7 +853,7 @@ static WRITE8_HANDLER( squawkntalk_portb2_w )
 		pia_1_ca2_w(0, 0);
 	}
 
-	/* read strobe -- read the current status from the TMS5220 */
+	/* read strobe -- read the current status from the TMS5200 */
 	else if (((data ^ squawkntalk_tms_strobes) & 0x01) && !(data & 0x01))
 	{
 		pia_1_porta_w(0, tms5220_status_r(offset));
@@ -941,7 +941,7 @@ MACHINE_DRIVER_START(squawk_n_talk)
 	MDRV_CPU_PROGRAM_MAP(squawkntalk_map,0)
 
 	/* only used on Discs of Tron, which is stereo */
-	MDRV_SOUND_ADD_TAG("snt", TMS5220, 640000)
+	MDRV_SOUND_ADD_TAG("snt", TMS5200, 640000)
 	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "left", 0.60)
 	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "right", 0.60)
 
diff --git a/src/mame/drivers/mcr3.c b/src/mame/drivers/mcr3.c
index e04eabb825c..a0834bad057 100644
--- a/src/mame/drivers/mcr3.c
+++ b/src/mame/drivers/mcr3.c
@@ -88,6 +88,9 @@
 #include "mcr.h"
 
 
+#define MASTER_CLOCK		XTAL_20MHz
+
+
 
 /*************************************
  *
@@ -1049,7 +1052,7 @@ GFXDECODE_END
 static MACHINE_DRIVER_START( mcr3_base )
 
 	/* basic machine hardware */
-	MDRV_CPU_ADD_TAG("main", Z80, 5000000)
+	MDRV_CPU_ADD_TAG("main", Z80, MASTER_CLOCK/4)
 	MDRV_CPU_CONFIG(mcr_daisy_chain)
 	MDRV_CPU_VBLANK_INT(mcr_interrupt,2)
 
diff --git a/src/mame/drivers/mcr68.c b/src/mame/drivers/mcr68.c
index 805c6e22c64..a528c4fc019 100644
--- a/src/mame/drivers/mcr68.c
+++ b/src/mame/drivers/mcr68.c
@@ -878,7 +878,7 @@ GFXDECODE_END
 static MACHINE_DRIVER_START( zwackery )
 
 	/* basic machine hardware */
-	MDRV_CPU_ADD(M68000, 7652400)
+	MDRV_CPU_ADD(M68000, 7652400)	/* should be XTAL_16MHz/2 */
 	MDRV_CPU_PROGRAM_MAP(zwackery_map,0)
 	MDRV_CPU_VBLANK_INT(mcr68_interrupt,1)
 
diff --git a/src/mame/includes/mcr.h b/src/mame/includes/mcr.h
index 7bcf74a12dc..ad2171fd7f9 100644
--- a/src/mame/includes/mcr.h
+++ b/src/mame/includes/mcr.h
@@ -7,7 +7,7 @@
 #include "cpu/z80/z80daisy.h"
 
 /* constants */
-#define MAIN_OSC_MCR_I		19968000
+#define MAIN_OSC_MCR_I		XTAL_19_968MHz
 
 
 /*----------- defined in drivers/mcr.c -----------*/
diff --git a/src/mame/machine/mcr.c b/src/mame/machine/mcr.c
index 45e639f379f..e27b2c2bcb6 100644
--- a/src/mame/machine/mcr.c
+++ b/src/mame/machine/mcr.c
@@ -15,7 +15,7 @@
 #include "cpu/z80/z80daisy.h"
 #include "mcr.h"
 
-#define VERBOSE 1
+#define VERBOSE 0
 #define LOG(x) do { if (VERBOSE) logerror x; } while (0)
 
 
diff --git a/src/mame/mame.mak b/src/mame/mame.mak
index cf2f7c2fb4a..35f30cca58e 100644
--- a/src/mame/mame.mak
+++ b/src/mame/mame.mak
@@ -244,6 +244,8 @@ SOUNDS += NAMCONA
 SOUNDS += TMS36XX
 SOUNDS += TMS3615
 SOUNDS += TMS5110
+SOUNDS += TMS0285
+SOUNDS += TMS5200
 SOUNDS += TMS5220
 SOUNDS += VLM5030
 SOUNDS += ADPCM