#if !defined(__PRE_RAM__)
#include "chip.h"
-extern void i82801ax_enable(device_t dev);
+void i82801ax_enable(device_t dev);
+#endif
+
+#if defined(__PRE_RAM__) && !defined(__ROMCC__)
+void enable_smbus(void);
+int smbus_read_byte(u8 device, u8 address);
#endif
#define SMBUS_IO_BASE 0x0f00