[rescue] Ultra 2 NVRAM - failed fix

[Peter Stokes]

Hi Ian

Programming for the OBP 4.x NVRAMs is easy if you have a OBP3.x system. Simply use the 3.x system to program BUT make sure you setup the correct machine ID for the 4.x system and recalculate the checksum. In general it is mainly just the Blade 100/150 which needs this, most later systems only use the NVRAM as a time of day clock if they have a NVRAM at all from memory.

Peter

Sent from my iPad

> On 30 Oct 2024, at 08:04, silcreval via rescue <rescue at sunhelp.org> wrote:
> 
> Hi all,
> 
> Thanks for the info on the 59 / 58 chip. I've now ordered both, so at least I'll have a spare if needed.
> 
> I do remember the adapter board Peter - I think I have one of those somewhere in the 'workshop'. 
> 
> Just out of interest - as I do have a few later Sun's - are there any FAQs for reprogramming NVRAMs with OBP 4? I'm guessing that's more of a project.
> 
> - Ian
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