Papers on Layered UNIX systems like Apollo VRM, Apollo SR10, etc.

[Mike Khaw]

I was sure someone else would mention it, but since I haven't seen it:

	SRI published some papers on Eunice (Unix workalike running
	on top of VMS) many years ago.  You can probably get reprints
	from the Wollongong Group, Palo Alto.

I believe the early incarnations of HP-UX were Unix on top of some proprietary
HP kernel OS.  I don't know if HP ever published anything about it.

Mike Khaw
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