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	extern vm_offset_t memtop; /* last address of physical memory + 1 */			extern vm_offset_t memtop; /* last address of physical memory + 1 */
	extern vm_offset_t memtop_copyin; /* memtop less heap size for the cases */			extern vm_offset_t memtop_copyin; /* memtop less heap size for the cases */
	/* when heap is at the top of */			/* when heap is at the top of */
	/* extended memory; for other cases */			/* extended memory; for other cases */
	/* just the same as memtop */			/* just the same as memtop */
	extern uint32_t high_heap_size; /* extended memory region available */			extern uint32_t high_heap_size; /* extended memory region available */
	extern vm_offset_t high_heap_base; /* for use as the heap */			extern vm_offset_t high_heap_base; /* for use as the heap */

				/* 16KB buffer space for real mode data transfers. */
				#define BIO_BUFFER_SIZE 0x4000
				void *bio_alloc(size_t size);
				void bio_free(void *ptr, size_t size);

	/*			/*
	* Values for width parameter to biospci_{read,write}_config			* Values for width parameter to biospci_{read,write}_config
	*/			*/
	#define BIOSPCI_8BITS 0			#define BIOSPCI_8BITS 0
	#define BIOSPCI_16BITS 1			#define BIOSPCI_16BITS 1
	#define BIOSPCI_32BITS 2			#define BIOSPCI_32BITS 2

	void biospci_detect(void);			void biospci_detect(void);
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