> Ebay. As the original Risc IX 
> is not installed anymore (anyone knows a source?) I

Yes.

I've been meaning to get my R260 down from the loft
for a while - it's got Risc IX 1.21 on it, and I've
sucecssfully duplicated the OS onto a spare disk. If
it still boots, I can dd the disk off to an image, if
you want.