Hello Dave,

> Didn't POSIX on MPE grow out of an earlier direction to merge the MPE
> and HP-UX environments onto a %100 compatible hardware platform
> (without so much as different firmware, even)?

The main motivation for POSIX from CSY's perspective was to make
it easier to get more apps and tools to MPE, especially apps.

> I seem to remember early speculation that eventually MPE would run
> "under" HP-UX, or vice versa, one being a virtual machine.  At that
> time I thought POSIX on MPE was in preparation for making the code
> runnable on either HP-UX or MPE, on the same hardware.

No.  As of late we in CSY R&D have been interested in "borrowing"
from HP-UX, esp. in the area of IO drivers, etc. But, even that has
been less than optimal, as we usually have to modify their code to
fit into MPE. One example would be adding more/better diagnostic
support.

> Or, was I drinking way to much beer back then to remember it
> accurately?

No comment!  Jeff