)
Values for EMS function status:
 00h	successful
 80h	internal error
 81h	hardware malfunction
 82h	busy -- retry later
 83h	invalid handle
 84h	undefined function requested by application
 85h	no more handles available
 86h	error in save or restore of mapping context
 87h	insufficient memory pages in system
 88h	insufficient memory pages available
 89h	zero pages requested
 8Ah	invalid logical page number encountered
 8Bh	invalid physical page number encountered
 8Ch	page-mapping hardware state save area is full
 8Dh	save of mapping context failed
 8Eh	restore of mapping context failed
 8Fh	undefined subfunction
 90h	undefined attribute type
 91h	feature not supported
 92h	successful, but a portion of the source region has been overwritten
 93h	length of source or destination region exceeds length of region
	  allocated to either source or destination handle
 94h	conventional and expanded memory regions overlap
 95h	offset within logical page exceeds size of logical page
 96h	region length exceeds 1M
 97h	source and destination EMS regions have same handle and overlap
 98h	memory source or destination type undefined
 9Ah	specified alternate map register or DMA register set not supported
 9Bh	all alternate map register or DMA register sets currently allocated
 9Ch	alternate map register or DMA register sets not supported
 9Dh	undefined or unallocated alternate map register or DMA register set
 9Eh	dedicated DMA channels not supported
 9Fh	specified dedicated DMA channel not supported
 A0h	no such handle name
 A1h	a handle found had no name, or duplicate handle name
 A2h	attempted to wrap around 1M conventional address space
 A3h	source array corrupted
 A4h	operating system denied access