diff --git a/src/mame/drivers/namcos1.c b/src/mame/drivers/namcos1.c
index 97e28586122..d5ba6c3bfe7 100644
--- a/src/mame/drivers/namcos1.c
+++ b/src/mame/drivers/namcos1.c
@@ -345,6 +345,9 @@ C - uses sub board with support for player 3 and 4 controls
 #include "sound/namco.h"
 #include "sound/dac.h"
 
+static int dac0_value, dac1_value, dac0_gain, dac1_gain;
+
+
 /* from video */
 VIDEO_START( namcos1 );
 VIDEO_UPDATE( namcos1 );
@@ -420,13 +423,19 @@ static WRITE8_HANDLER( namcos1_coin_w )
 	coin_counter_w(1,data & 4);
 }
 
-static int dac0_value ,dac1_value, dac0_gain=0x80, dac1_gain=0x80;
-
 static void namcos1_update_DACs(void)
 {
 	DAC_signed_data_16_w(0,0x8000 + (dac0_value * dac0_gain) + (dac1_value * dac1_gain));
 }
 
+void namcos1_init_DACs(void)
+{
+	dac0_value = 0;
+	dac1_value = 0;
+	dac0_gain=0x80;
+	dac1_gain=0x80;
+}
+
 static WRITE8_HANDLER( namcos1_dac_gain_w )
 {
 	int value;
diff --git a/src/mame/machine/namcos1.c b/src/mame/machine/namcos1.c
index 7186e51e32e..26b6b921fc3 100644
--- a/src/mame/machine/namcos1.c
+++ b/src/mame/machine/namcos1.c
@@ -4,6 +4,9 @@
 
 #define NAMCOS1_MAX_BANK 0x400
 
+/* from drivers */
+void namcos1_init_DACs(void);
+
 /* from video */
 READ8_HANDLER( namcos1_videoram_r );
 WRITE8_HANDLER( namcos1_videoram_w );
@@ -570,6 +573,8 @@ WRITE8_HANDLER( namcos1_sound_bankswitch_w )
 
 static int mcu_patch_data;
 static int namcos1_reset = 0;
+static int wdog;
+static int chip[16];
 
 WRITE8_HANDLER( namcos1_cpu_control_w )
 {
@@ -589,8 +594,6 @@ WRITE8_HANDLER( namcos1_cpu_control_w )
 
 WRITE8_HANDLER( namcos1_watchdog_w )
 {
-	static int wdog;
-
 	wdog |= 1 << (cpu_getactivecpu());
 	if (wdog == 7 || !namcos1_reset)
 	{
@@ -702,7 +705,6 @@ static void set_bank(int banknum, const bankhandler *handler)
 
 static void namcos1_bankswitch(int cpu, offs_t offset, UINT8 data)
 {
-	static int chip[16];
 	int bank = (cpu*8) + (( offset >> 9) & 0x07);
 
 	if (offset & 1)
@@ -865,6 +867,11 @@ MACHINE_RESET( namcos1 )
 	/* mcu patch data clear */
 	mcu_patch_data = 0;
 	namcos1_reset = 0;
+
+	namcos1_init_DACs();
+	memset(key, 0, sizeof(key));
+	memset(chip, 0, sizeof(chip));
+	wdog = 0;
 }
 
 
@@ -949,7 +956,7 @@ struct namcos1_specific
 
 static void namcos1_driver_init(const struct namcos1_specific *specific )
 {
-	const struct namcos1_specific no_key =
+	static const struct namcos1_specific no_key =
 	{
 		no_key_r,no_key_w
 	};
@@ -998,7 +1005,7 @@ DRIVER_INIT( shadowld )
 *******************************************************************************/
 DRIVER_INIT( dspirit )
 {
-	const struct namcos1_specific dspirit_specific=
+	static const struct namcos1_specific dspirit_specific=
 	{
 		key_type1_r,key_type1_w, 0x36
 	};
@@ -1010,7 +1017,7 @@ DRIVER_INIT( dspirit )
 *******************************************************************************/
 DRIVER_INIT( wldcourt )
 {
-	const struct namcos1_specific worldcourt_specific=
+	static const struct namcos1_specific worldcourt_specific=
 	{
 		key_type1_r,key_type1_w, 0x35
 	};
@@ -1022,7 +1029,7 @@ DRIVER_INIT( wldcourt )
 *******************************************************************************/
 DRIVER_INIT( blazer )
 {
-	const struct namcos1_specific blazer_specific=
+	static const struct namcos1_specific blazer_specific=
 	{
 		key_type1_r,key_type1_w, 0x13
 	};
@@ -1034,7 +1041,7 @@ DRIVER_INIT( blazer )
 *******************************************************************************/
 DRIVER_INIT( puzlclub )
 {
-	const struct namcos1_specific puzlclub_specific=
+	static const struct namcos1_specific puzlclub_specific=
 	{
 		key_type1_r,key_type1_w, 0x35
 	};
@@ -1046,7 +1053,7 @@ DRIVER_INIT( puzlclub )
 *******************************************************************************/
 DRIVER_INIT( pacmania )
 {
-	const struct namcos1_specific pacmania_specific=
+	static const struct namcos1_specific pacmania_specific=
 	{
 		key_type2_r,key_type2_w, 0x12
 	};
@@ -1058,7 +1065,7 @@ DRIVER_INIT( pacmania )
 *******************************************************************************/
 DRIVER_INIT( alice )
 {
-	const struct namcos1_specific alice_specific=
+	static const struct namcos1_specific alice_specific=
 	{
 		key_type2_r,key_type2_w, 0x25
 	};
@@ -1070,7 +1077,7 @@ DRIVER_INIT( alice )
 *******************************************************************************/
 DRIVER_INIT( galaga88 )
 {
-	const struct namcos1_specific galaga88_specific=
+	static const struct namcos1_specific galaga88_specific=
 	{
 		key_type2_r,key_type2_w, 0x31
 	};
@@ -1082,7 +1089,7 @@ DRIVER_INIT( galaga88 )
 *******************************************************************************/
 DRIVER_INIT( ws )
 {
-	const struct namcos1_specific ws_specific=
+	static const struct namcos1_specific ws_specific=
 	{
 		key_type2_r,key_type2_w, 0x07
 	};
@@ -1094,7 +1101,7 @@ DRIVER_INIT( ws )
 *******************************************************************************/
 DRIVER_INIT( bakutotu )
 {
-	const struct namcos1_specific bakutotu_specific=
+	static const struct namcos1_specific bakutotu_specific=
 	{
 		key_type2_r,key_type2_w, 0x22
 	};
@@ -1131,7 +1138,7 @@ DRIVER_INIT( bakutotu )
 *******************************************************************************/
 DRIVER_INIT( splatter )
 {
-	const struct namcos1_specific splatter_specific=
+	static const struct namcos1_specific splatter_specific=
 	{
 		key_type3_r,key_type3_w, 181, 3, 4,-1,-1,-1,-1
 	};
@@ -1144,7 +1151,7 @@ DRIVER_INIT( splatter )
 *******************************************************************************/
 DRIVER_INIT( rompers )
 {
-	const struct namcos1_specific rompers_specific=
+	static const struct namcos1_specific rompers_specific=
 	{
 		key_type3_r,key_type3_w, 182, 7,-1,-1,-1,-1,-1
 	};
@@ -1156,7 +1163,7 @@ DRIVER_INIT( rompers )
 *******************************************************************************/
 DRIVER_INIT( blastoff )
 {
-	const struct namcos1_specific blastoff_specific=
+	static const struct namcos1_specific blastoff_specific=
 	{
 		key_type3_r,key_type3_w, 183, 0, 7, 3, 5,-1,-1
 	};
@@ -1168,7 +1175,7 @@ DRIVER_INIT( blastoff )
 *******************************************************************************/
 DRIVER_INIT( ws89 )
 {
-	const struct namcos1_specific ws89_specific=
+	static const struct namcos1_specific ws89_specific=
 	{
 		key_type3_r,key_type3_w, 184, 2,-1,-1,-1,-1,-1
 	};
@@ -1180,7 +1187,7 @@ DRIVER_INIT( ws89 )
 *******************************************************************************/
 DRIVER_INIT( tankfrce )
 {
-	const struct namcos1_specific tankfrce_specific=
+	static const struct namcos1_specific tankfrce_specific=
 	{
 		key_type3_r,key_type3_w, 185, 5,-1, 1,-1, 2,-1
 	};
@@ -1192,7 +1199,7 @@ DRIVER_INIT( tankfrce )
 *******************************************************************************/
 DRIVER_INIT( dangseed )
 {
-	const struct namcos1_specific dangseed_specific=
+	static const struct namcos1_specific dangseed_specific=
 	{
 		key_type3_r,key_type3_w, 308, 6,-1, 5,-1, 0, 4
 	};
@@ -1204,7 +1211,7 @@ DRIVER_INIT( dangseed )
 *******************************************************************************/
 DRIVER_INIT( pistoldm )
 {
-	const struct namcos1_specific pistoldm_specific=
+	static const struct namcos1_specific pistoldm_specific=
 	{
 		key_type3_r,key_type3_w, 309, 1, 2, 0,-1, 4,-1
 	};
@@ -1216,7 +1223,7 @@ DRIVER_INIT( pistoldm )
 *******************************************************************************/
 DRIVER_INIT( ws90 )
 {
-	const struct namcos1_specific ws90_specific=
+	static const struct namcos1_specific ws90_specific=
 	{
 		key_type3_r,key_type3_w, 310, 4,-1, 7,-1, 3,-1
 	};
@@ -1228,7 +1235,7 @@ DRIVER_INIT( ws90 )
 *******************************************************************************/
 DRIVER_INIT( soukobdx )
 {
-	const struct namcos1_specific soukobdx_specific=
+	static const struct namcos1_specific soukobdx_specific=
 	{
 		key_type3_r,key_type3_w, 311, 2, 3/*?*/, 0,-1, 4,-1
 	};
diff --git a/src/mame/video/namcos1.c b/src/mame/video/namcos1.c
index 9d2eb40a1a9..350e2c4984b 100644
--- a/src/mame/video/namcos1.c
+++ b/src/mame/video/namcos1.c
@@ -50,6 +50,7 @@ static UINT8 namcos1_playfield_control[0x20];
 
 static tilemap *bg_tilemap[6];
 static UINT8 *tilemap_maskdata;
+static int copy_sprites;
 
 
 
@@ -142,6 +143,9 @@ VIDEO_START( namcos1 )
 		machine->shadow_table[machine->pens[i]] = machine->pens[i + 0x0800];
 
 	spriteram = &namcos1_spriteram[0x800];
+
+	memset(namcos1_playfield_control, 0, sizeof(namcos1_playfield_control));
+	copy_sprites = 0;
 }
 
 
@@ -212,7 +216,6 @@ WRITE8_HANDLER( namcos1_paletteram_w )
 
 
 
-static int copy_sprites;
 
 READ8_HANDLER( namcos1_spriteram_r )
 {