IIRC Spur VMs do not support image segments. There should be code written
in Smalltalk to do what the V3 VMs used to do (loading and saving).
Yes, Bert wrote code to load old segments. I was under the impression, however, that producing new segments should be possible. The primitive does work with simple objects at least (I've tested it with a 10 MB array).
Wrong list btw. CC'd vm-dev.
Thanks!