[SunRescue] Re: [Sunhelp] URGENT: Need bootp server for Solaris 7

[Chris Kozlowski]

I am familiar with the module board, and that is actually
what I am referring to.  The CPU is not soldered -- it is torqued
down onto the module board by way of four spring-loaded allen heads --
and I wondered whether the module board is proprietary to a given
CPU speed or whether any one of the litle buggers under the heat
sinks will fit into another module board, say, one that might
have a bent pin.

Chris

On Mon, 1 Nov 1999, James Lockwood wrote:

> On Mon, 1 Nov 1999, Chris Kozlowski wrote:
> 
> > Question regarding UltraSparc CPUs (Ultra 5 & 10) -- is it possible
> > to remove the actual UltraSparc from the CPU board and replace it
> > with a different one, of a different speed, or is there something
> > inherent to the speed of the CPU on the CPU board?  Are there
> > torque specs on the screws holding down the CPU?
> 
> The UltraSparc CPU is soldered to a small "module board", much as the
> SuperSparc CPU's were to MBus modules.  This module board (collectively
> known as an Ultra IIi module) attaches to the motherboard with two long
> sockets.
> 
> There is nothing to stop you exchanging CPU modules, except that some
> older Ultra 5/10's may require firmware updates.  Fortunately since the
> boot PROM on these is flashable this isn't too hard.
> 
> The Ultra IIi module is also used by the SparcEngine AXi.
> 
> There are no actual screws that hold the module in place, rather they hold
> retainer bars against the module to prevent it from shifting.  Seat the
> module well and you will have no problems.
> 
> -James
> 
> 
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