diff --git a/BaS_gcc/sources/sysinit.c b/BaS_gcc/sources/sysinit.c
index fcd7af6..244f828 100644
--- a/BaS_gcc/sources/sysinit.c
+++ b/BaS_gcc/sources/sysinit.c
@@ -484,7 +484,7 @@ void test_upd720101(void)
 			MCF_PCI_PCICAR_FUNCNUM(0) +
 			MCF_PCI_PCICAR_DWORD(57);
 
-		* (uint8_t *) PCI_IO_OFFSET = 0x20;
+		//* (uint8_t *) PCI_IO_OFFSET = 0x20;
 	}
 	else
 	{