Hi,

Well, to record this for future reference.

The 8meg VSIMM in the slot closest to the CPUs (seems) to make
the MBUS run at 40mhz, so the sbus runs at 20mhz.

If I move the VSIMM to the slot furthest from the CPUs 
and closest to the front of the system then the MBUS runs
at 50mhz and the sbus runs at 25mhz.  On systems this 
slow every little bit helps.

Surely that was documented somewhere...

cheers

bruce

On Tue, Feb 21, 2006 at 06:44:37PM +0000, Bruce O'Neel wrote:
> Hi,
> 
> I've put a 8meg VSIMM in one of my SparcStation 20s, and, now when it
> boots it thinks:
> 
> mainbus0 (root): SUNW,SPARCstation-10,SX: hostid 72714ca5
> 
> Now, this this would be ok, but it also thinks that:
> 
> sbus0 at iommu0: clock = 20 MHz
> 
> instead of:
> 
> sbus0 at iommu0: clock = 25 MHz
> 
> The good news is that:
> 
> cgfourteen0 at obio0 slot 1 offset 0x0 level 8: cgeight emulated at 1152x900x24bpp
> cgfourteen0: attached to /dev/fb0
> 
> Is this just the way it is?  I don't have much on the sbus so
> a 20% drop in the clock rate shouldn't make a bit difference, it
> just seemed odd...
> 
> Now off to try X...
> 
> Thanks for any tips!
> 
> cheers
> 
> bruce
> 
> -- 
> edoneel@sdf.lonestar.org
> SDF Public Access UNIX System - http://sdf.lonestar.org

-- 
edoneel@sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org