diff --git a/scripts/target/mame/arcade.lua b/scripts/target/mame/arcade.lua
index ad97618dced..40c0370ed1e 100644
--- a/scripts/target/mame/arcade.lua
+++ b/scripts/target/mame/arcade.lua
@@ -2985,6 +2985,8 @@ files {
 	MAME_DIR .. "src/mame/includes/namcos2.h",
 	MAME_DIR .. "src/mame/machine/namcos2.cpp",
 	MAME_DIR .. "src/mame/video/namcos2.cpp",
+	MAME_DIR .. "src/mame/video/namco_c45road.cpp",
+	MAME_DIR .. "src/mame/video/namco_c45road.h",
 	MAME_DIR .. "src/mame/video/namco_c169roz.cpp",
 	MAME_DIR .. "src/mame/video/namco_c169roz.h",
 	MAME_DIR .. "src/mame/video/namco_c355spr.cpp",
@@ -3082,8 +3084,6 @@ files {
 	MAME_DIR .. "src/mame/audio/namco54.h",
 	MAME_DIR .. "src/mame/video/namco_c116.cpp",
 	MAME_DIR .. "src/mame/video/namco_c116.h",
-	MAME_DIR .. "src/mame/video/c45.cpp",
-	MAME_DIR .. "src/mame/video/c45.h",
 }
 
 createMAMEProjects(_target, _subtarget, "nasco")
diff --git a/src/mame/drivers/namconb1.cpp b/src/mame/drivers/namconb1.cpp
index ad505fbc38f..9c068d4985a 100644
--- a/src/mame/drivers/namconb1.cpp
+++ b/src/mame/drivers/namconb1.cpp
@@ -986,7 +986,7 @@ void namconb1_state::namconb1(machine_config &config)
 	m_screen->screen_vblank().set(FUNC(namconb1_state::screen_vblank));
 	m_screen->set_palette(m_c116);
 
-	NAMCO_C355SPR(config, m_c355spr, 0);
+	NAMCO_C355SPR(config, m_c355spr);
 	m_c355spr->set_screen(m_screen);
 	m_c355spr->set_palette(m_c116);
 	m_c355spr->set_scroll_offsets(0x26, 0x19);
@@ -995,12 +995,12 @@ void namconb1_state::namconb1(machine_config &config)
 	m_c355spr->set_buffer(2); // triple buffered
 	m_c355spr->set_color_base(0);
 
-	NAMCO_C123TMAP(config, m_c123tmap, 0);
+	NAMCO_C123TMAP(config, m_c123tmap);
 	m_c123tmap->set_palette(m_c116);
 	m_c123tmap->set_tile_callback(namco_c123tmap_device::c123_tilemap_delegate(&namconb1_state::NB1TilemapCB, this));
 	m_c123tmap->set_color_base(0x1000);
 
-	NAMCO_C116(config, m_c116, 0);
+	NAMCO_C116(config, m_c116);
 	m_c116->enable_shadows();
 
 	SPEAKER(config, "lspeaker").front_left();
@@ -1021,7 +1021,7 @@ void namconb1_state::namconb2(machine_config &config)
 
 	m_screen->set_screen_update(FUNC(namconb1_state::screen_update_namconb2));
 
-	NAMCO_C169ROZ(config, m_c169roz, 0);
+	NAMCO_C169ROZ(config, m_c169roz);
 	m_c169roz->set_palette(m_c116);
 	m_c169roz->set_is_namcofl(false);
 	m_c169roz->set_ram_words(0x20000 / 2);
diff --git a/src/mame/drivers/namcos2.cpp b/src/mame/drivers/namcos2.cpp
index d528c9baf9b..7b1f209f322 100644
--- a/src/mame/drivers/namcos2.cpp
+++ b/src/mame/drivers/namcos2.cpp
@@ -1641,7 +1641,7 @@ via software as INT1
 
 void namcos2_state::configure_c116_standard(machine_config &config)
 {
-	NAMCO_C116(config, m_c116, 0);
+	NAMCO_C116(config, m_c116);
 	m_c116->enable_shadows();
 }
 
@@ -1761,7 +1761,7 @@ TIMER_DEVICE_CALLBACK_MEMBER(namcos2_state::screen_scanline)
 
 void namcos2_state::configure_c123tmap_standard(machine_config &config)
 {
-	NAMCO_C123TMAP(config, m_c123tmap, 0);
+	NAMCO_C123TMAP(config, m_c123tmap);
 	m_c123tmap->set_palette(m_c116);
 	m_c123tmap->set_tile_callback(namco_c123tmap_device::c123_tilemap_delegate(&namcos2_state::TilemapCB, this));
 	m_c123tmap->set_color_base(16*256);
@@ -1769,7 +1769,7 @@ void namcos2_state::configure_c123tmap_standard(machine_config &config)
 
 void namcos2_state::configure_c169roz_standard(machine_config &config)
 {
-	NAMCO_C169ROZ(config, m_c169roz, 0);
+	NAMCO_C169ROZ(config, m_c169roz);
 	m_c169roz->set_palette(m_c116);
 	m_c169roz->set_is_namcofl(false);
 	m_c169roz->set_ram_words(0x10000/2);
@@ -1778,7 +1778,7 @@ void namcos2_state::configure_c169roz_standard(machine_config &config)
 
 void namcos2_state::configure_c355spr_standard(machine_config &config)
 {
-	NAMCO_C355SPR(config, m_c355spr, 0);
+	NAMCO_C355SPR(config, m_c355spr);
 	m_c355spr->set_screen(m_screen);
 	m_c355spr->set_palette(m_c116);
 	m_c355spr->set_scroll_offsets(0x26, 0x19);
@@ -1789,7 +1789,7 @@ void namcos2_state::configure_c355spr_standard(machine_config &config)
 
 void namcos2_state::configure_c45road_standard(machine_config &config)
 {
-	NAMCO_C45_ROAD(config, m_c45_road, 0);
+	NAMCO_C45_ROAD(config, m_c45_road);
 	m_c45_road->set_palette(m_c116);
 }
 
diff --git a/src/mame/drivers/tceptor.cpp b/src/mame/drivers/tceptor.cpp
index 5a99944a50b..9d403a3a8b7 100644
--- a/src/mame/drivers/tceptor.cpp
+++ b/src/mame/drivers/tceptor.cpp
@@ -343,7 +343,7 @@ void tceptor_state::tceptor(machine_config &config)
 	GFXDECODE(config, m_gfxdecode, m_palette, gfx_tceptor);
 	PALETTE(config, m_palette, FUNC(tceptor_state::tceptor_palette), 4096, 1024);
 
-	NAMCO_C45_ROAD(config, m_c45_road, 0);
+	NAMCO_C45_ROAD(config, m_c45_road);
 	m_c45_road->set_palette(m_palette);
 
 	SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
diff --git a/src/mame/includes/namcos2.h b/src/mame/includes/namcos2.h
index 383eab59c38..14cad5bc2cc 100644
--- a/src/mame/includes/namcos2.h
+++ b/src/mame/includes/namcos2.h
@@ -16,7 +16,7 @@
 #include "machine/namco_c148.h"
 #include "machine/timer.h"
 #include "sound/c140.h"
-#include "video/c45.h"
+#include "video/namco_c45road.h"
 #include "video/namco_c116.h"
 #include "machine/namco65.h"
 #include "machine/namco68.h"
diff --git a/src/mame/includes/tceptor.h b/src/mame/includes/tceptor.h
index c018da7d105..782ca290bef 100644
--- a/src/mame/includes/tceptor.h
+++ b/src/mame/includes/tceptor.h
@@ -7,7 +7,7 @@
 
 #include "cpu/m6502/m65c02.h"
 #include "sound/namco.h"
-#include "video/c45.h"
+#include "video/namco_c45road.h"
 #include "emupal.h"
 #include "screen.h"
 #include "tilemap.h"
diff --git a/src/mame/video/namco_c116.h b/src/mame/video/namco_c116.h
index 96a0b774697..c9688479d2f 100644
--- a/src/mame/video/namco_c116.h
+++ b/src/mame/video/namco_c116.h
@@ -6,7 +6,6 @@
 #pragma once
 
 
-
 //***************************************************************************
 //  TYPE DEFINITIONS
 //***************************************************************************
@@ -18,7 +17,7 @@ class namco_c116_device :
 {
 public:
 	//construction/destruction
-	namco_c116_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+	namco_c116_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
 
 	// configuration
 	void enable_shadows() { m_enable_shadows = true; }
@@ -44,7 +43,7 @@ private:
 	std::vector<uint8_t> m_ram_g;
 	std::vector<uint8_t> m_ram_b;
 	uint16_t m_regs[8];
-	bool                m_enable_shadows;       // are shadows enabled?
+	bool m_enable_shadows; // are shadows enabled?
 };
 
 DECLARE_DEVICE_TYPE(NAMCO_C116, namco_c116_device)
diff --git a/src/mame/video/namco_c123tmap.h b/src/mame/video/namco_c123tmap.h
index d02296cfcc8..3ae46b869b0 100644
--- a/src/mame/video/namco_c123tmap.h
+++ b/src/mame/video/namco_c123tmap.h
@@ -13,7 +13,7 @@ class namco_c123tmap_device : public device_t, public device_gfx_interface
 {
 public:
 	// construction/destruction
-	namco_c123tmap_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+	namco_c123tmap_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
 
 	void set_color_base(int color) { m_color_base = color; }
 	void set_offset(int xoffs, int yoffs)
diff --git a/src/mame/video/namco_c169roz.h b/src/mame/video/namco_c169roz.h
index d6329a6a8d0..626dba73d79 100644
--- a/src/mame/video/namco_c169roz.h
+++ b/src/mame/video/namco_c169roz.h
@@ -13,7 +13,7 @@ class namco_c169roz_device : public device_t, public device_gfx_interface
 {
 public:
 	// construction/destruction
-	namco_c169roz_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+	namco_c169roz_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
 
 	void set_is_namcofl(bool state) { m_is_namcofl = state; }
 	void set_ram_words(uint32_t size) { m_ramsize = size; }
diff --git a/src/mame/video/namco_c355spr.cpp b/src/mame/video/namco_c355spr.cpp
index 570c6a92e7d..8ea17dc18d1 100644
--- a/src/mame/video/namco_c355spr.cpp
+++ b/src/mame/video/namco_c355spr.cpp
@@ -133,9 +133,6 @@ void namco_c355spr_device::zdrawgfxzoom(
 
 void namco_c355spr_device::copybitmap(bitmap_ind16 &dest_bmp, const rectangle &clip, u8 pri)
 {
-	device_palette_interface &palette = gfx(0)->palette();
-	const int shadow_offset = (palette.shadows_enabled()) ? palette.entries() : 0;
-	const pen_t black = palette.black_pen();
 	if (m_palxor)
 	{
 		for (int y = clip.min_y; y <= clip.max_y; y++)
@@ -186,10 +183,9 @@ void namco_c355spr_device::copybitmap(bitmap_ind16 &dest_bmp, const rectangle &c
 					{
 						if ((c & 0xff) != 0xff)
 						{
-							if (c == 0xffe && shadow_offset)
+							if (c == 0xffe)
 							{
-								if (dest[x] != black)
-									dest[x] |= shadow_offset;
+								dest[x] |= 0x800;
 							}
 							else
 							{
@@ -206,8 +202,6 @@ void namco_c355spr_device::copybitmap(bitmap_ind16 &dest_bmp, const rectangle &c
 void namco_c355spr_device::copybitmap(bitmap_rgb32 &dest_bmp, const rectangle &clip, u8 pri)
 {
 	device_palette_interface &palette = gfx(0)->palette();
-	const int shadow_offset = (palette.shadows_enabled()) ? palette.entries() : 0;
-	const pen_t black = palette.black_pen();
 	const pen_t *pal = &palette.pen(gfx(0)->colorbase());
 	if (m_palxor)
 	{
@@ -264,10 +258,9 @@ void namco_c355spr_device::copybitmap(bitmap_rgb32 &dest_bmp, const rectangle &c
 					{
 						if ((c & 0xff) != 0xff)
 						{
-							if (c == 0xffe && shadow_offset)
+							if (c == 0xffe)
 							{
-								if (srcrender[x] != black)
-									srcrender[x] |= shadow_offset;
+								srcrender[x] |= 0x800;
 							}
 							else
 							{
diff --git a/src/mame/video/namco_c355spr.h b/src/mame/video/namco_c355spr.h
index 70d53ec0fc5..3e55eacd3b7 100644
--- a/src/mame/video/namco_c355spr.h
+++ b/src/mame/video/namco_c355spr.h
@@ -12,7 +12,7 @@ class namco_c355spr_device : public device_t, public device_gfx_interface, publi
 {
 public:
 	// construction/destruction
-	namco_c355spr_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+	namco_c355spr_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
 
 	void set_color_base(u16 base) { m_colbase = base; }
 	void set_scroll_offsets(int x, int y) { m_scrolloffs[0] = x; m_scrolloffs[1] = y; }
diff --git a/src/mame/video/c45.cpp b/src/mame/video/namco_c45road.cpp
similarity index 99%
rename from src/mame/video/c45.cpp
rename to src/mame/video/namco_c45road.cpp
index 35f6659f10e..403ad010276 100644
--- a/src/mame/video/c45.cpp
+++ b/src/mame/video/namco_c45road.cpp
@@ -37,7 +37,7 @@
  */
 
 #include "emu.h"
-#include "video/c45.h"
+#include "video/namco_c45road.h"
 
 
 //****************************************************************************
diff --git a/src/mame/video/c45.h b/src/mame/video/namco_c45road.h
similarity index 97%
rename from src/mame/video/c45.h
rename to src/mame/video/namco_c45road.h
index 68efbfe22c7..ba0814ccb51 100644
--- a/src/mame/video/c45.h
+++ b/src/mame/video/namco_c45road.h
@@ -19,7 +19,7 @@ class namco_c45_road_device : public device_t, public device_gfx_interface, publ
 {
 public:
 	// construction/destruction
-	namco_c45_road_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+	namco_c45_road_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
 
 	void map(address_map &map);
 
diff --git a/src/mame/video/namcos2_sprite.cpp b/src/mame/video/namcos2_sprite.cpp
index 2e6f48abf91..a6047f05add 100644
--- a/src/mame/video/namcos2_sprite.cpp
+++ b/src/mame/video/namcos2_sprite.cpp
@@ -50,7 +50,6 @@ void namcos2_sprite_device::zdrawgfxzoom(
 		if (gfx)
 		{
 			device_palette_interface &palette = gfx->palette();
-			const int shadow_offset = (palette.shadows_enabled()) ? palette.entries() : 0;
 			const pen_t *pal = &palette.pen(gfx->colorbase() + gfx->granularity() * (color % gfx->colors()));
 			const u8 *source_base = gfx->get_data(code % gfx->elements());
 			const int sprite_screen_height = (scaley * gfx->height() + 0x8000) >> 16;
@@ -160,9 +159,9 @@ void namcos2_sprite_device::zdrawgfxzoom(
 									{
 										if (pri[x] <= zpos)
 										{
-											if (color == 0xf && c==0xfe && shadow_offset)
+											if (color == 0xf && c == 0xfe)
 											{
-												dest[x] |= shadow_offset;
+												dest[x] |= 0x800;
 											}
 											else
 											{