diff --git a/src/mame/drivers/nightgal.cpp b/src/mame/drivers/nightgal.cpp
index 2720f071051..d5357fd051d 100644
--- a/src/mame/drivers/nightgal.cpp
+++ b/src/mame/drivers/nightgal.cpp
@@ -18,6 +18,25 @@ TODO:
 -Minor graphic glitches in Royal Queen (cross hatch test, some little glitches during gameplay),
  presumably due of the unemulated wait states on the comms.
 
+ Notes:
+-Night Gal Summer accesses the blitter in a weird fashion, perhaps it fails the ROM check 
+ due of address line encryption?
+ Example snippet:
+		 0  1  2  3  4  5  6
+		   RH XX YY WW HH DD
+		70 00 40 80 07 06 00 x = 2 y = 3 srcl = 0 srch = 1 srcd = 6
+        DD    YY RH WW HH XX
+		00 60 80 03 07 06 48 x = 6 y = 2 srcl = 1 srch = 3 srcd = 0
+		XX DD RH    WW HH YY
+		50 00 04 28 07 06 80 x = 0 y = 6 srcl = 3 srch = 2 srcd = 1
+		YY XX    DD WW HH RH
+		80 58 10 00 07 06 03 x = 1 y = 0 srcl = 2 srch = 6 srcd = 3
+		RH YY DD XX WW HH
+		02 80 00 68 07 06 a0 x = 3 y = 1 srcl = 6 srch = 0 srcd = 2
+		      .. .. .. .. ..
+			  
+		48 03 78 80 07 06 00 (again) 
+ 
 *******************************************************************************************/
 
 #include "emu.h"