diff --git a/drivers/bios_emulator/biosemui.h b/drivers/bios_emulator/biosemui.h
index 954cd883158..739a17cae5f 100644
--- a/drivers/bios_emulator/biosemui.h
+++ b/drivers/bios_emulator/biosemui.h
@@ -128,6 +128,7 @@ typedef struct {
 	u32 finalVal;
 } BE_portInfo;
 
+#if defined(X86EMU_RAW_IO)
 #define PM_inpb(port)	inb(port)
 #define PM_inpw(port)	inw(port)
 #define PM_inpd(port)	inl(port)
@@ -135,6 +136,46 @@ typedef struct {
 #define PM_outpw(port, val)	outw(val, port)
 #define PM_outpd(port, val)	outl(val, port)
 
+#else
+
+/*
+ * Until the emulator code is fixed, at least print warnings.
+ */
+
+static inline u8 PM_inpb(u16 port)
+{
+	printf("x86 port 0x%x read attempt, returning 0\n", port);
+	return 0;
+}
+
+static inline u16 PM_inpw(u16 port)
+{
+	printf("x86 port 0x%x read attempt, returning 0\n", port);
+	return 0;
+}
+
+static inline u32 PM_inpd(u16 port)
+{
+	printf("x86 port 0x%x read attempt, returning 0\n", port);
+	return 0;
+}
+
+static inline void PM_outpb(u16 port, u8 val)
+{
+	printf("x86 port 0x%x write attempt, ignoring\n", port);
+}
+
+static inline void PM_outpw(u16 port, u16 val)
+{
+	printf("x86 port 0x%x write attempt, ignoring\n", port);
+}
+
+static inline void PM_outpd(u16 port, u32 val)
+{
+	printf("x86 port 0x%x write attempt, ignoring\n", port);
+}
+#endif
+
 #define LOG_inpb(port)	PM_inpb(port)
 #define LOG_inpw(port)	PM_inpw(port)
 #define LOG_inpd(port)	PM_inpd(port)