I'll look in my 2 SparcStation 1+ and SS2, and give you the barcode
numbers and stuff. Even if the battery is dead, maybe something can be
extrapolated (?) from the barcodes, if you have a large enough sample...

---   David A Woyciesjes
---   C & IS Support Specialist
---   Yale University Press
---   mailto:david.woyciesjes@yale.edu
---   (203) 432-0953
---   ICQ # - 905818


! -----Original Message-----
! From: der Mouse [mailto:mouse@Rodents.Montreal.QC.CA]
! Sent: Monday, September 03, 2001 1:00 AM
! To: port-sparc@netbsd.org
! Subject: old NVRAMs
! 
! 
! I've got eight old 48T02 NVRAM chips whose batteries ahve run down.
! I'd like to reconstruct the MAC address and hostid values 
! corresponding
! to them; all but one of them still has its barcode sticker 
! (and I don't
! expect to get anything useful for the one that's lost its sticker :-).
! 
! Mark Henderson's NVRAM FAQ says that Sun can reconstruct this 
! given the
! barcode (or, possibly, the four-character code also prinetd on the
! sticker), but does not say how.  Is that algorithm known, or partially
! known?  If not, I'll volunteer to collect data points to try 
! to work it
! out, if people with still-good NVRAMs will send their barcode and/or
! four-character codes to me with the Ethernet address and hostid that
! correspond.  (I've got only three live samples in my own collection,
! not really enough to tell much from.)  I'll also be looking at mine to
! see if there is an obvious correspondence between barcodes and
! four-character codes.
! 
! The newer sort, the 48T08 sort, don't need this, since the last three
! octets of the MAC address are identical to the low three bytes of the
! hostid, and are printed under the barcode.  It's just the old sort I'm
! interested in here.
! 
! Any information appreciated.
! 
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