[rescue] SGI Onyx KONA backplane upgrade?... help!

[Corda Albert J DLVA]

Hey guys, I know this is a rather detailed SGI question, but
I'm hoping someone here might have already tried this....


I just came across a KONA backplane that I'd like
to put in my Onyx VTX.  As I don't have a IR graphics
cardset yet, I want to keep the machine at VTX graphics...

I did a deja search, but I still have a few questions...

What I've found via google and Simon Pigot's website, etc.
seems to indicate that systems were shipped with KONA
backplanes and VTX/RE2 Graphics. This implies to me that
I can (and should?) still use the original 505 and 512
power boards (for VTX/RE2) from the non-KONA backplane
in the KONA backplane. Whats bothering me is that while
installing the KONA backplane I noticed that it provides
some extra power connector "studs" between the power board
slots.  Will these interfere with the installation 505 and
512 power boards in the KONA backplane? Do I have to find/use
a set of 303/305 and 512T power boards to make this work?

Also, if I do have to install the 303/305 and 512T, will it fry my
VTX (soon to be RE2 :-) cardset?

The other question concerns a shorting bar(jumper) between
two of the threaded studs that connect the main power supply
to the backplane.  These two studs are labeled RE92 and RE97.

On the original (non-KONA, from VTX/RE2 machine) backplane,
the shorting bar is in place. It is, however, missing on
the KONA backplane (the KONA backplane came from a machine
having IR graphics)  Do I need to install a shorting bar on
the KONA backplane to get my VTX/RE2 graphics to work?

My gut instinct is that these two options are in major conflict
with each other, that is if I install both the RE92-RE97 jumper
and the 303/305 and 512T (IR graphics) power boards, I will let
all the magic smoke out... in a _big_ way.  

Can anyone shed any light on these issues? Please? 


-al-
-acorda at 1bigred.com