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Re: replace a legacy proprietary RTOS (Real-Time executive) with NetBSD!

Hi All,

We are evaluating to replace a legacy proprietary RTOS (Real-Time
executive) with NetBSD as one of the potential and leading candidates.

We would like to emulate legacy RTOS API on NetBSD. Part of the RTOS
application/client be ported to user-side and part of it may be ported
to kernel-side.
In this case we need to have two emulation layers one for kernel side
and another for user-side as the kernel side programming API is
different from user-side programming API.

I have few questions in this regard:
- Were there any such kind of migrations from a legacy RTOS to NetBSD
previously? If so what are the migration experiences, lessons learnt

- Although man pages are good, it is difficult to figure out the what
kind of APIs it provides for a particular OS service for ex:
synchronization and communication services, threading services on both
the kernel and user side. Is there an architecture handbook that be
quickly browsed to find out such info and later refer to the man pages
for more info?

- any other hints/suggestions about such a migration to NetBSD would be helpful

Thanks in advance

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