Tadpole Bullfrog-1 Lapytop How to Reprogram the IDPROM
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
OBP Commands:
IDProm is within 1000h below that
Calculate Checksum using Windows calculator in Programmer mode:
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.
---------- 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:
Any other response after entering the passphrase means is was the wrong code.
SPARCLE:
Hope this helps all the Tadpole SPARC Laptop owners.
Jack KG6INX
Last edited by forjack842; 02-18-2016 at 02:10 AM..
Reason: Add CODE tags.
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