INT 6F - 10-NET - STATUS OF NODE
        AH = 02h
        DS:DX -> 512-byte status record (see below)
Return: CF set on error
            AX = error code (see AH=00h)
        CF clear if successful

Format of node status record:
Offset  Size    Description
 00h  8 BYTEs   user name (0 if none)
 08h    BYTE    station type
                   00h workstation
                   01h superstation
                   02h gateway station
                   03h gateway active
                   04h logged into multiple superstations
                   05h reserved
 09h 24 BYTEs   list of superstations logged into more than one superstation
 21h 12 BYTEs   node ID
 2Dh    WORD    message count for this station (send for user node, receive for
                superstations)
---for superstations only---
 2Fh    WORD    drives allocated (bit 0=A:, bit 1=B:,...)
 31h    BYTE    user service flag
                bit 7: gate
                    6: print permit on
                    4: SUBMIT is on
                    3: mail waiting for node
                    2: calendar waiting for you
                    1: news waiting for you
                    0: mail waiting for you
 32h    BYTE    printers allocated (bit 0=LPT1,...)
 33h    BYTE    number of unprinted spool files
 34h    BYTE    number of opened files
 35h    BYTE    number of logged on nodes
 36h    BYTE    primary drive (1=A:)
 37h    BYTE    reserved
 38h  N BYTEs   list of logged on node IDs (each 12 bytes, max 37 IDs)
1F4h  3 BYTEs   time: sec/min/hrs
1F7h  3 BYTEs   date: day/mon/year-1980