diff --git a/hardware/kartusho/amstrad/KARTUSHO.ROM b/hardware/kartusho/amstrad/KARTUSHO.ROM
index 83038fb..9013eca 100644
Binary files a/hardware/kartusho/amstrad/KARTUSHO.ROM and b/hardware/kartusho/amstrad/KARTUSHO.ROM differ
diff --git a/hardware/kartusho/amstrad/kartusho.asm b/hardware/kartusho/amstrad/kartusho.asm
index beb5f0d..e54fa89 100644
--- a/hardware/kartusho/amstrad/kartusho.asm
+++ b/hardware/kartusho/amstrad/kartusho.asm
@@ -44,7 +44,7 @@ crctlo  ld      b, $bc          ; inicializo registros CRCT
 
         ld      bc, $3ffc
         ld      l, h            ; HL= 0
-        ld      de, $8000
+        ld      de, $4000
         ldir
 
   ld a, $42                     ; poner borde verde