diff --git a/src/bios/exp/FUNC_4x.ASM b/src/bios/exp/FUNC_4x.ASM
index 9e592c0..7e3d8ea 100644
--- a/src/bios/exp/FUNC_4x.ASM
+++ b/src/bios/exp/FUNC_4x.ASM
@@ -7,7 +7,7 @@
  ENDM
 ;______________________________________________________________________:
 ;
-
+;--
 HD_BPB_PREP:
 	LD	D,A
 	IN	A,(SLOT3)