diff --git a/gfss/z80/gfssb97c.sz b/gfss/z80/gfssb97c.sz
index fa75021..79ee306 100644
--- a/gfss/z80/gfssb97c.sz
+++ b/gfss/z80/gfssb97c.sz
@@ -13,12 +13,16 @@ SOUND_DRIVER_INTERRUPT_ENTRY:
 ; 1B00 SPRITE ATTIBUTE TABLE 1
 ; 1B80 SPRITE ATTIBUTE TABLE 2
 
-; MSX2 DOUBLE BUFFER
+; MSX2 MODE 2 DOUBLE BUFFER
 ; 4C00 SPRITE COLOR TABLE 1
 ; 4E00 SPRITE ATTIBUTE TABLE 1
 ; 5C00 SPRITE COLOR TABLE 2
 ; 5E00 SPRITE ATTIBUTE TABLE 2
 
+; MSX2 MODE 1 DOUBLE BUFFER
+; 1B80 SPRITE ATTIBUTE TABLE 2
+; 1F80 SPRITE ATTIBUTE TABLE 1
+
 ; CALLED FROM 8182/8240
 ; ???? <- BCEB
 .patched_sprite_update:
@@ -29,7 +33,7 @@ SOUND_DRIVER_INTERRUPT_ENTRY:
 	AND	A
 	JR	NZ, .bufferc1
 .bufferc2:
-	LD	DE, 5C00H
+	LD	DE, 1C00H + 4000H
 
 	EXX
 	LD	HL, 0D15AH+3
@@ -37,7 +41,7 @@ SOUND_DRIVER_INTERRUPT_ENTRY:
 	JP	.updatec
 
 .bufferc1:
-	LD	DE, 4C00H
+	LD	DE, 0C00H + 4000H
 
 	EXX
 	LD	HL, 0D0DAH+3
@@ -63,11 +67,11 @@ SOUND_DRIVER_INTERRUPT_ENTRY:
 	LD	HL, 0D15AH
 
   IFDEF GRAPHIC3
-	LD	DE, 5E00H
+	LD	DE, 1E00H + 4000H
 	CALL	.updaten
 	LD	BC, 0BF05H
   ELSE
-	LD	DE, 5B80H
+	LD	DE, 1B80H + 4000H
 	CALL	.updaten
 	LD	BC, 3705H
   ENDIF
@@ -77,11 +81,11 @@ SOUND_DRIVER_INTERRUPT_ENTRY:
 	LD	HL, 0D0DAH
 
   IFDEF GRAPHIC3
-	LD	DE, 4E00H
+	LD	DE, 0E00H + 4000H
 	CALL	.updaten
-	LD	BC,09F05H
+	LD	BC, 9F05H
   ELSE
-	LD	DE, 5F80H
+	LD	DE, 1F80H + 4000H
 	CALL	.updaten
 	LD	BC, 3F05H
   ENDIF