Thank you all for your suggestions.  The SUN ULTRA1 booted!

The screen said, " Welcome to Gentoo Linux LiveCD".

The trick was from the "ok" prompt to get the address of the CD reader.
This was done using devalias.

Then ok> boot  /sbus/SUNW, fas@e,8800000/sd@6, 0:f
worked!

I do not know gentoo at all having cut my teeth on aurora and fedora.  
This will be an adventure.

Thanks again everyone.

Ken Jones
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