Network Management ROM Format

Type Field Bytes Comments
db blank 1 00 address cannot be used
ascii NMR 3 (IBM has VPD)
dw length of NMR 2 (in words)
dw check code (crc) 2
ascii *NA 3 pointer to Network Address (IBM)
db 5 1 network address length (IBM)
db 02608Cxxxxxx 6 network address (IBM)
ascii *RL 3 same as IBM, ROS level
db 4 1 ROS length field
ascii current ROS level 4 (ex. 0012)
ascii *DS 3 Data String
db 13 1 character string length -1
ascii "EtherLink/MC 32 3C527" 22 Product Information
ascii *PN 3 Part Number
db 7 1 part number length field
ascii 008209000 10 assembly number
ascii *EC 3 EC Level
db 5 1 EC length field
ascii 000000 6 3Com is all zeroes
ascii *DD 3 device driver
db 3 1 DD length field
ascii 0 / 2 3Com is all zeroes
ascii *DG 3 Diagnostic Level
db 3 1 DG length field
ascii 0 / 2 3Com is all zeroes
ascii *FN 3 FRU Number
db 6 1 FRU length field
ascii 000000 8 3Com is all zeroes
ascii *SN 3 Serial Number
db 6 1 SN length field
ascii ******** 8 8 characters for 3Com SN
ascii *MF 3 Manufacturer's number
db 5 1 MF length field
ascii 000001 6 00=PCAO, 01=Solectron
ascii *DT 3 Date Code
db 5 1 Date Code length
ascii xxxxxx 6 yr-mo-day (ie 910131)
ascii *CR 3 Copyright
db 12 1 Copyright length
ascii "Copyright 3Com Corp." 20

Content created and/or collected by:
Louis Ohland, Peter Wendt, William Walsh, David Beem, Tatsuo Sunagawa, Jim Shorney, Tim Clarke, Kevin Bowling, Tomáš Slavotínek, and many others.

Ardent Tool of Capitalism - MAD Edition! is maintained by Tomáš Slavotínek.
Last update: 06 Oct 2021 - Changes & Credits | Legal Info & Contact