[rescue] Ultra 5/10 with OpenPROM Password

Patrick Finnegan pat at computer-refuge.org
Fri Apr 23 20:12:00 CDT 2004

On Friday 23 April 2004 19:53, Jonathan C. Patschke wrote:
> On Fri, 23 Apr 2004, Bill Bradford wrote:
> > They do?  Why do U5s/U10s have flashable OBP/POST, and earlier
> > machines dont?
> I suspect he meant "nvram" instead of "prom", and I'm fairly certain
> that the nvram modules are very similar, possibly identical. 
> However, don't the Darwin (U5/U10) machines have a nvram-clean
> jumper, or am I misremembering?

Uhh, yeah.  NVRAM.  It's damn difficult to shove the Sparc 5 EPROM into 
an Ultra 5...  A friend calling the NVRAM a "PROM" has tainted me into 
calling it that, I guess.

No idea on the jumper.  When I've tried it (putting the NVRAM into an 
Ultra 1 / Ultra 5), it Just Works.

Anyways, you shouldn't ever need to replace the Flash chip on a U5/U10, 
unless you need to replace more motherboard bits as well.  It's 
"resistent" to being flashed incorrectly (high/low halves).  Still I 
guess you could erase both halves at once if you tried.  I personally 
try to keep my foot out of my orifaces. :)

Purdue University ITAP/RCS        ---  http://www.itap.purdue.edu/rcs/
The Computer Refuge               ---  http://computer-refuge.org

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