Morning,
Finally located the memory locations that hold the Ethernet Addr, Serial, Date, and Checksum which make up the IDPROM. What's so damn time consuming is taking what information is available and getting it to work on your system. In the last 10 or years vendors have removed some to most of the commands used in the documentation. Both versions of the Sun OBP Ref Manual are good but a command syntax example is worth its weight in gold.
In any case there's the How to:
IDProm locations:
Bullfrog-1

Code:

FFF17A58 = 01	Format
FFF17A59 = 80	Type
FFF17A5A = 00	Ethernet Addr
FFF17A5B = 00	Ethernet Addr
FFF17A5C = 83	EthernetAddr
FFF17A5D = D1 Ethernet Addr
FFF17A5E = 00	Ethernet Addr
FFF17A5F = 8D	Ethernet Addr
FFF17A60 = 00	Date
FFF17A61 = 00	Date
FFF17A62 = 00 Date
FFF17A63 = 00	Date
FFF17A64 = D1	Serial
FFF17A65 = 00	Serial
FFF17A66 = F0	Serial
FFF17A67 = 7F	Checksum

OBP Commands:

Code:

FFF17A58 10 dump	displays 16 bytes
FFF17A58 C? Displays content of a single address (is 01)
n FFF17A58 C!	Store byte "n" in address
show-devices	Find address of eeprom

IDProm is within 1000h below that
Calculate Checksum using Windows calculator in Programmer mode:

Code:

B is for Byte.
B1 xor B2 xor B3 xor B4 xor B5 xor B6 xor B7 xor B8 xor B9 xor B10 xor B11 xor B12.....B15 = B16

Regarding "nvedit" as much as I have read, this utility can't be used to edit a specific address, rather is designed to use a specific area NVRAM space for commands.

Thanks for your help,
Jack KG6INX

---------- Post updated at 09:44 PM ---------- Previous update was at 09:43 AM ----------

To my amazement, when I entered the new 16 bytes of data, the banner was correct. Resetting and BAM! everything was invalid again. Come to find that the OBP copies the 16 bytes out of battery backed memory to a non battery backed up buffer. Further digging found the "IDPROM" string in battery backed memory. Input the 16 bytes there and whalla everything is valid even after a complete power cycle. Use the commands and checksum calculations I posted previously below.

Code:

FFF19FD8 = 01	Type
FFF19FD9 = 80	Type
FFF19FDA = 00	Ethernet Addr
FFF19FDB = 00	Ethernet Addr
FFF19FDC = 83	EthernetAddr
FFF19FDD = D1 Ethernet Addr
FFF19FDE = 00	Ethernet Addr
FFF19FDF = 8D	Ethernet Addr
FFF19FD0 = 00	Date
FFF19FE1 = 00	Date
FFF19FE2 = 00 Date
FFF19FE3 = 00	Date
FFF19FE4 = D1	Serial
FFF19FE5 = 00	Serial
FFF19FE6 = F0	Serial
FFF19FE7 = 7F	Checksum

---------- Post updated at 10:04 PM ---------- Previous update was at 09:44 PM ----------

Well after burning a bunch of hours finally getting my invalid IDPROM restored the hard way, Flextronics Support surprised me tonight with the correct "passphrase" to restore the host-id easily. This process correctly restores the entire 16 bytes of the battery backed IDPROM data.

So for all to find and use, the Tadpole Bullfrog-1 host-id restore is as follows:

Code:

After restart:
ok
set-defaults
ok your host-id
ok set-host-id
Entering an invalid code.....bla bla bla

Enter passphrase: 9301984
Please reset the board.....bla bla

Any other response after entering the passphrase means is was the wrong code.

SPARCLE:

Code:

 passphrase is 930984

Hope this helps all the Tadpole SPARC Laptop owners.

Jack KG6INX