Format of BW-TCP driver info:
Offset	Size	Description	)
 00h	WORD	I/O base address
 02h	BYTE	shared memory page (01h = segment 0100h, etc.)
 03h	BYTE	interrupt vector for private API
 04h	BYTE	IRQ used by board
 05h	WORD	size of data buffer
 07h	WORD	maximum transfer window
 09h	WORD	time zone
 0Bh	BYTE	address type (01h user, 04h RARP, 05h BOOTP)
 0Ch	DWORD	internet address
 10h	WORD	"value" ???
 12h	BYTE	subnet mask
 13h	WORD	"ether_pointer" ???
 15h	WORD	offset in device driver of log server records (see #01413)
 17h	WORD	offset in device driver of name server records (see #01413)
 19h	WORD	offset in device driver of print server records (see #01413)
 1Bh	WORD	offset in device driver of time server records (see #01413)
 1Dh	WORD	offset in device driver of gateway records (see #01413)
 1Fh	WORD	segment address of device driver
 21h	BYTE	transfer size
 22h  9 BYTEs	network adapter board name
---11/21/91+ ---
 23h	BYTE	ETHDEV version (major in high nybble, minor in low nybble)
 24h	BYTE	ETHDEV revision
 25h	BYTE	TCPIP version (major in high nybble, minor in low nybble)
 26h	BYTE	TCPIP revision
 27h	BYTE	BWRPC version (major in high nybble, minor in low nybble)
 28h	BYTE	BWRPC revision
 29h	BYTE	BWNFS version (major in high nybble, minor in low nybble)
 2Ah	BYTE	BWNFS revision
 2Bh	BYTE	Telnet version (major in high nybble, minor in low nybble)
 2Ch	BYTE	Telnet revision
 2Dh	BYTE	NETBIOS version (major in high nybble, minor in low nybble)
 2Eh	BYTE	NETBIOS revision
Note:	for each driver, if version=0, the driver is not installed or does
	  not support the version check