INT 21 - DOS 3.1+ network - SET MACHINE NAME                                    
	AX = 5E01h
	CH = 00h undefine name (make it invalid)
	   <> 0	 define name
	CL = name number
	DS:DX -> 15-character blank-padded ASCIZA NUL-terminated ASCII string.	The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h.  Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. name
SeeAlso: AX=5E00h