diff --git a/src/mame/drivers/konamigx.cpp b/src/mame/drivers/konamigx.cpp
index a7f30ac65d6..8e53ae13c7f 100644
--- a/src/mame/drivers/konamigx.cpp
+++ b/src/mame/drivers/konamigx.cpp
@@ -174,7 +174,7 @@
    00000006
    000e0002
    002e0080
- - Sexy Parodius: sets up p1 as 2 at start of stage 1. Related to missing snow?
+ - Sexy Parodius: sets up p1 as 2 at start of stage 1, 4 during stage 3A (attract mode), p4 is autoincremented at each gameplay frame. Related to missing effects?
  */
 
 static struct sprite_entry {
@@ -336,6 +336,19 @@ void konamigx_state::sal2_esc(address_space &space, UINT32 p1, UINT32 p2, UINT32
 void konamigx_state::sexyparo_esc(address_space &space, UINT32 p1, UINT32 p2, UINT32 p3, UINT32 p4)
 {
 	// The d20000 should probably be p3
+	// TODO: debugging bootcamp, remove once finished
+	if(p1 != 0)
+	{
+		static bool shorter_debug_msg;
+
+		if(machine().input().code_pressed_once(KEYCODE_L))
+			shorter_debug_msg = true;
+
+		if(shorter_debug_msg == true)
+			popmessage("%02x",p1);
+		else
+			popmessage("%02x P1 param detected, please drop a note at MAMETesters #06035, press L if you understood and make this message shorter",p1);
+	}
 	generate_sprites(space, 0xc00604, 0xd20000, 0xfc);
 }
 
@@ -973,7 +986,8 @@ static ADDRESS_MAP_START( gx_base_memmap, AS_PROGRAM, 32, konamigx_state )
 	AM_RANGE(0xc00000, 0xc1ffff) AM_RAM AM_SHARE("workram")
 	AM_RANGE(0xd00000, 0xd01fff) AM_DEVREAD("k056832", k056832_device, k_5bpp_rom_long_r)
 	AM_RANGE(0xd20000, 0xd20fff) AM_DEVREADWRITE16("k055673", k055673_device, k053247_word_r, k053247_word_w, 0xffffffff)
-	AM_RANGE(0xd21000, 0xd21fff) AM_RAM // second bank of sprite RAM
+	AM_RANGE(0xd21000, 0xd21fff) AM_RAM // second bank of sprite RAM, accessed thru ESC
+	AM_RANGE(0xd22000, 0xd23fff) AM_RAM // extra bank checked at least by sexyparo, pending further investigation.
 	AM_RANGE(0xd40000, 0xd4003f) AM_DEVWRITE("k056832", k056832_device, long_w)
 	AM_RANGE(0xd44000, 0xd4400f) AM_WRITE(konamigx_tilebank_w)
 	AM_RANGE(0xd48000, 0xd48007) AM_DEVWRITE16("k055673", k055673_device, k053246_word_w, 0xffffffff)