INT 21 u - LAN Manager Enhanced DOS - LOCAL NetServerEnum
        AX = 5F4Ch
        BX = level (0000h or 0001h)
        CX = buffer length
        ES:DI -> buffer in which to store information
Return: CF clear if successful
            ES:DI -> server_info_X structures (depending on level) (see below)
            BX = entries read
            CX = total entries available
        CF set on error
            AX = error code
Notes:  this function is also supported by the Novell DOS Named Pipe Extender
        this function has been obseleted by NetServerEnum2
SeeAlso: AX=5F53h

Format of server_info_0 structure:
Offset  Size    Description
 00h 16 BYTEs   name

Format of server_info_1 structure:
Offset  Size    Description
 00h 16 BYTEs   name
 10h    BYTE    major version in lower nibble
 11h    BYTE    minor version
 12h    DWORD   server type bitmask (see below)
 16h    DWORD   -> comment string

Bitfields for server type:
 bit 0  workstation
 bit 1  server
 bit 2  SQL server
 bit 3  primary domain controller
 bit 4  backup domain controller
 bit 5  time server
 bit 6  Apple File Protocol (AFP) server
 bit 7  Novell server
 bit 8  Domain Member (v2.1+)
 bit 9  Print Queue server (v2.1+)
 bit 10 Dialin server (v2.1+)
 bit 11 Unix server (v2.1+)

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