I've used the following references: http://www.squirrel.com/squirrel/sun-nvram-hostid.faq http://ftp.rodents-montreal.org/mouse/docs/Sun/nvram/stop-the-clock While doing some clean up, I found my notes where I figured out how to stop the time of day clock on a 6X0MP system @ open boot prom: f1201000 f o map-page 80 ff8 c! 80 ff9 c! 0 ff8 c! At the time I had done this, I could not find a source on the net on how to do this. I did some research, and based the above on Sun-4c instructions modified for the boot rom and the different addresses of the location of the NVRAM in memory, and the different position in that model of NVRAM used on the 6X0MP for the clock itself. I just did some searches now, and it looks like nobody indicated the above for the 6X0MP, but I found references to the above for the SS10 and SS20. Thought I'd pass this along. On one of the links it shows a one liner on stopping the TOD clock on an ss1000: 00280000 f Anyone know if that is all that is required, or is was this just identifying where it is in memory, but no specifics within the TOD clock memory on what to do ? Anyone have the mojo on stopping the TOD clock on: Ultra 1 Ultra 2 Ultra 60 Ultra 10 SparcServer 1000E Sunblade 1500 Sunblade 2000 ??? Thanks, -- Curt