diff --git a/src/mame/drivers/macrossp.c b/src/mame/drivers/macrossp.c
index d439bd3dabf..343da5f1c35 100644
--- a/src/mame/drivers/macrossp.c
+++ b/src/mame/drivers/macrossp.c
@@ -15,8 +15,7 @@ TODO:
 - Priorities (Sprites & Backgrounds) - see quizmoon attract mode
 - sprite/tilemap priorities might not be 100% correct
 - Sound
-- palette fade on macrossp Banpresto logo screen (and black on some screen
-  transitions). quizmoon doesn't use that register.
+- optimize palette fading in macrossp.quizmoon doesn't use that register.
 - All Other Unused Reads / Writes
 - Correct unknown ports if/as needed
 - Clean Up
@@ -369,6 +368,38 @@ static READ16_HANDLER( macrossp_soundcmd_r )
 	return soundlatch_word_r(machine,offset,mem_mask);
 }
 
+static INT32 fade_effect,old_fade;
+
+static void update_colors(running_machine *machine)
+{
+	static int i,r,g,b;
+
+	for(i=0;i<0x1000;i++)
+	{
+		b = ((paletteram32[i] & 0x0000ff00) >> 8);
+		if(fade_effect > b) { b = 0; }
+		else				{ b-=fade_effect; }
+		g = ((paletteram32[i] & 0x00ff0000) >>16);
+		if(fade_effect > g) { g = 0; }
+		else			 	{ g-=fade_effect; }
+		r = ((paletteram32[i] & 0xff000000) >>24);
+		if(fade_effect > r) { r = 0; }
+		else				{ r-=fade_effect; }
+
+		palette_set_color(machine,i,MAKE_RGB(r,g,b));
+	}
+}
+
+static WRITE32_HANDLER( macrossp_palette_fade_w )
+{
+	fade_effect = ((data & 0xff00) >> 8) - 0x28;//it writes two times,first with a -0x28 then with the proper data
+//	popmessage("%02x",fade_effect);
+	if(old_fade != fade_effect)
+	{
+		old_fade = fade_effect;
+		update_colors(machine);
+	}
+}
 
 /*** MEMORY MAPS *************************************************************/
 
@@ -416,11 +447,11 @@ static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 32 )
 
 	AM_RANGE(0xa00000, 0xa03fff) AM_WRITE(paletteram32_macrossp_w) AM_BASE(&paletteram32)
 
-	AM_RANGE(0xb00004, 0xb00007) AM_WRITE(SMH_NOP)	// ????
-	AM_RANGE(0xb00008, 0xb0000b) AM_WRITE(SMH_NOP)	// ????
-//  AM_RANGE(0xb0000c, 0xb0000f) AM_WRITE(SMH_NOP)
-	AM_RANGE(0xb00010, 0xb00013) AM_WRITE(SMH_RAM)	// macrossp palette fade
-//  AM_RANGE(0xb00020, 0xb00023) AM_WRITE(SMH_NOP)
+	AM_RANGE(0xb00004, 0xb00007) AM_WRITE(SMH_NOP)	// irq related?
+	AM_RANGE(0xb00008, 0xb0000b) AM_WRITE(SMH_NOP)	// irq related?
+	AM_RANGE(0xb0000c, 0xb0000f) AM_WRITE(SMH_NOP)
+	AM_RANGE(0xb00010, 0xb00013) AM_WRITE(macrossp_palette_fade_w)	// macrossp palette fade
+  	AM_RANGE(0xb00020, 0xb00023) AM_WRITE(SMH_NOP)
 
 	AM_RANGE(0xc00000, 0xc00003) AM_WRITE(macrossp_soundcmd_w)
 
@@ -750,6 +781,14 @@ PC :00018110 018110: beq     18104
 	if (activecpu_get_pc()==0x001810A) cpu_spinuntil_int();
 }
 
+#ifdef UNUSED_FUNCTION
+static WRITE32_HANDLER( quizmoon_speedup_w )
+{
+	COMBINE_DATA(&macrossp_mainram[0x00020/4]);
+	if (activecpu_get_pc()==0x1cc) cpu_spinuntil_int();
+}
+#endif
+
 static DRIVER_INIT( macrossp )
 {
 	memory_install_write32_handler(machine, 0, ADDRESS_SPACE_PROGRAM, 0xf10158, 0xf1015b, 0, 0, macrossp_speedup_w );
@@ -757,6 +796,9 @@ static DRIVER_INIT( macrossp )
 
 static DRIVER_INIT( quizmoon )
 {
+#ifdef UNUSED_FUNCTION
+	memory_install_write32_handler(machine, 0, ADDRESS_SPACE_PROGRAM, 0xf00020, 0xf00023, 0, 0, quizmoon_speedup_w );
+#endif
 }
 
 GAME( 1996, macrossp, 0, macrossp, macrossp, macrossp, ROT270, "Banpresto", "Macross Plus", GAME_IMPERFECT_GRAPHICS )