INT 21 - DOS 3.1+ network - GET MACHINE NAME
AX = 5E00h
DS:DX -> 16-byte buffer for ASCIZ machine name
Return: CF clear if successful
CH = validity
00h name invalid
nonzero valid
CL = NetBIOS number for machine name
DS:DX buffer filled with blank-paded name
CF set on error
AX = error code (01h) (see AH=59h)
Note:   supported by OS/2 v1.3+ compatibility box, PC-NFS

See also: 215E01

215E00 - DOS 3.1+ network - GET MACHINE NAME