add supduck palette type to emupal.c and use that (nw)

src/emu/emupal.c

@@ -927,10 +927,18 @@ rgb_t raw_to_rgb_converter::RRRRGGGGBBBBRGBx_decoder(UINT32 raw)
 	return rgb_t(r, g, b);
 }
 
-rgb_t raw_to_rgb_converter::xRGBRRRRGGGGBBBB_decoder(UINT32 raw)
+rgb_t raw_to_rgb_converter::xRGBRRRRGGGGBBBB_bit0_decoder(UINT32 raw)
 {
 	UINT8 r = pal5bit(((raw >> 7) & 0x1e) | ((raw >> 14) & 0x01));
 	UINT8 g = pal5bit(((raw >> 3) & 0x1e) | ((raw >> 13) & 0x01));
 	UINT8 b = pal5bit(((raw << 1) & 0x1e) | ((raw >> 12) & 0x01));
 	return rgb_t(r, g, b);
 }
+
+rgb_t raw_to_rgb_converter::xRGBRRRRGGGGBBBB_bit4_decoder(UINT32 raw)
+{
+	UINT8 r = pal5bit(((raw >> 8) & 0x0f) | ((raw >> 10) & 0x10));
+	UINT8 g = pal5bit(((raw >> 4) & 0x0f) | ((raw >> 9)  & 0x10));
+	UINT8 b = pal5bit(((raw >> 0) & 0x0f) | ((raw >> 8)  & 0x10));
+	return rgb_t(r, g, b);
+}

src/emu/emupal.h

@@ -143,7 +143,8 @@
 #define PALETTE_FORMAT_RRRRRGGGGGBBBBBx raw_to_rgb_converter(2, &raw_to_rgb_converter::standard_rgb_decoder<5,5,5, 11,6,1>)
 #define PALETTE_FORMAT_GGGGGRRRRRBBBBBx raw_to_rgb_converter(2, &raw_to_rgb_converter::standard_rgb_decoder<5,5,5, 6,11,1>)
 #define PALETTE_FORMAT_RRRRGGGGBBBBRGBx raw_to_rgb_converter(2, &raw_to_rgb_converter::RRRRGGGGBBBBRGBx_decoder)
-#define PALETTE_FORMAT_xRGBRRRRGGGGBBBB raw_to_rgb_converter(2, &raw_to_rgb_converter::xRGBRRRRGGGGBBBB_decoder)
+#define PALETTE_FORMAT_xRGBRRRRGGGGBBBB_bit0 raw_to_rgb_converter(2, &raw_to_rgb_converter::xRGBRRRRGGGGBBBB_bit0_decoder)
+#define PALETTE_FORMAT_xRGBRRRRGGGGBBBB_bit4 raw_to_rgb_converter(2, &raw_to_rgb_converter::xRGBRRRRGGGGBBBB_bit4_decoder)
 
 // standard 5-6-5 formats
 #define PALETTE_FORMAT_RRRRRGGGGGGBBBBB raw_to_rgb_converter(2, &raw_to_rgb_converter::standard_rgb_decoder<5,6,5, 11,5,0>)
@@ -307,7 +308,8 @@ class raw_to_rgb_converter
 	static rgb_t BBGGRRII_decoder(UINT32 raw);
 	static rgb_t IRRRRRGGGGGBBBBB_decoder(UINT32 raw);
 	static rgb_t RRRRGGGGBBBBRGBx_decoder(UINT32 raw);  // bits 3/2/1 are LSb
-	static rgb_t xRGBRRRRGGGGBBBB_decoder(UINT32 raw);  // bits 14/13/12 are LSb
+	static rgb_t xRGBRRRRGGGGBBBB_bit0_decoder(UINT32 raw);  // bits 14/13/12 are LSb
+	static rgb_t xRGBRRRRGGGGBBBB_bit4_decoder(UINT32 raw);  // bits 14/13/12 are MSb
 
 private:
 	// internal data

src/mame/drivers/alpha68k.c

@@ -2098,7 +2098,7 @@ static MACHINE_CONFIG_START( alpha68k_II, alpha68k_state )
 
 	MCFG_GFXDECODE_ADD("gfxdecode", "palette", alpha68k_II)
 	MCFG_PALETTE_ADD("palette", 2048)
-	MCFG_PALETTE_FORMAT(xRGBRRRRGGGGBBBB)
+	MCFG_PALETTE_FORMAT(xRGBRRRRGGGGBBBB_bit0)
 
 	MCFG_VIDEO_START_OVERRIDE(alpha68k_state,alpha68k)
 
@@ -2151,7 +2151,7 @@ static MACHINE_CONFIG_START( alpha68k_II_gm, alpha68k_state )
 
 	MCFG_GFXDECODE_ADD("gfxdecode", "palette", alpha68k_II)
 	MCFG_PALETTE_ADD("palette", 2048)
-	MCFG_PALETTE_FORMAT(xRGBRRRRGGGGBBBB)
+	MCFG_PALETTE_FORMAT(xRGBRRRRGGGGBBBB_bit0)
 
 	MCFG_VIDEO_START_OVERRIDE(alpha68k_state,alpha68k)
 
@@ -2197,7 +2197,7 @@ static MACHINE_CONFIG_START( alpha68k_V, alpha68k_state )
 
 	MCFG_GFXDECODE_ADD("gfxdecode", "palette", alpha68k_V)
 	MCFG_PALETTE_ADD("palette", 4096)
-	MCFG_PALETTE_FORMAT(xRGBRRRRGGGGBBBB)
+	MCFG_PALETTE_FORMAT(xRGBRRRRGGGGBBBB_bit0)
 
 	MCFG_VIDEO_START_OVERRIDE(alpha68k_state,alpha68k)
 
@@ -2243,7 +2243,7 @@ static MACHINE_CONFIG_START( alpha68k_V_sb, alpha68k_state )
 
 	MCFG_GFXDECODE_ADD("gfxdecode", "palette", alpha68k_V)
 	MCFG_PALETTE_ADD("palette", 4096)
-	MCFG_PALETTE_FORMAT(xRGBRRRRGGGGBBBB)
+	MCFG_PALETTE_FORMAT(xRGBRRRRGGGGBBBB_bit0)
 
 	MCFG_VIDEO_START_OVERRIDE(alpha68k_state,alpha68k)
 

src/mame/drivers/supduck.c

@@ -36,7 +36,6 @@ class supduck_state : public driver_device
 			m_text_videoram(*this, "textvideoram"),
 			m_fore_videoram(*this, "forevideoram"),
 			m_back_videoram(*this, "backvideoram"),
-			m_paletteram(*this, "paletteram"),
 			m_gfxdecode(*this, "gfxdecode"),
 			m_palette(*this, "palette")
 	{ }
@@ -50,7 +49,6 @@ class supduck_state : public driver_device
 	required_shared_ptr<UINT16> m_text_videoram;
 	required_shared_ptr<UINT16> m_fore_videoram;
 	required_shared_ptr<UINT16> m_back_videoram;
-	required_shared_ptr<UINT16> m_paletteram;
 
 	required_device<gfxdecode_device> m_gfxdecode;
 	required_device<palette_device> m_palette;
@@ -68,7 +66,6 @@ class supduck_state : public driver_device
 
 	DECLARE_WRITE16_MEMBER(supduck_4000_w);
 	DECLARE_WRITE16_MEMBER(supduck_4002_w);
-	DECLARE_WRITE16_MEMBER(supduck_paletteram_w);
 
 	TILEMAP_MAPPER_MEMBER(supduk_tilemap_scan);
 
@@ -245,22 +242,6 @@ WRITE16_MEMBER(supduck_state::supduck_4000_w)
 {
 }
 
-WRITE16_MEMBER(supduck_state::supduck_paletteram_w)
-{
-	int r, g, b;
-	data = COMBINE_DATA(&m_paletteram[offset]);
-
-	r = ((data >> 8) & 0x0f);
-	if (data & 0x4000) r |= 0x10;
-
-	g = ((data >> 4 ) & 0x0f);
-	if (data & 0x2000) g |= 0x10;
-
-	b = ((data >> 0 ) & 0x0f);
-	if (data & 0x1000) b |= 0x10;
-
-	m_palette->set_pen_color (offset, rgb_t(r<<3, g<<3, b<<3));
-}
 
 WRITE16_MEMBER(supduck_state::supduck_4002_w)
 {
@@ -308,7 +289,7 @@ static ADDRESS_MAP_START( main_map, AS_PROGRAM, 16, supduck_state )
 	AM_RANGE(0xfec000, 0xfecfff) AM_RAM_WRITE(text_videoram_w) AM_SHARE("textvideoram")
 	AM_RANGE(0xff0000, 0xff3fff) AM_RAM_WRITE(back_videoram_w) AM_SHARE("backvideoram")
 	AM_RANGE(0xff4000, 0xff7fff) AM_RAM_WRITE(fore_videoram_w) AM_SHARE("forevideoram")
-	AM_RANGE(0xff8000, 0xff87ff) AM_RAM_WRITE(supduck_paletteram_w) AM_SHARE("paletteram") // AM_RAM_DEVWRITE("palette", palette_device, write) AM_SHARE("palette")
+	AM_RANGE(0xff8000, 0xff87ff) AM_RAM_DEVWRITE("palette", palette_device, write) AM_SHARE("palette")
 	AM_RANGE(0xffc000, 0xffffff) AM_RAM /* working RAM */
 ADDRESS_MAP_END
 
@@ -510,7 +491,7 @@ static MACHINE_CONFIG_START( supduck, supduck_state )
 	MCFG_GFXDECODE_ADD("gfxdecode", "palette", supduck)
 
 	MCFG_PALETTE_ADD("palette", 0x800/2)
-//  MCFG_PALETTE_FORMAT(xRGBRRRRGGGGBBBB) // can't use this, the RGB bits are the lowest bits with this format, for this game they're the highest bits
+	MCFG_PALETTE_FORMAT(xRGBRRRRGGGGBBBB_bit4)
 
 	/* sound hardware */
 	MCFG_SPEAKER_STANDARD_MONO("mono")