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 F. Ohland, Peter H. Wendt, David L. Beem, William R. Walsh, Tatsuo Sunagawa, Tomáš Slavotínek, Jim Shorney, Tim N. Clarke, Kevin Bowling, and many others.

Ardent Tool of Capitalism is maintained by Tomáš Slavotínek.
Last update: 20 Jan 2024 - Changelog | About | Legal & Contact