UNIX V 11/70 vs VAX differences

[Dave Brownell]

Apologies if this has been posted before.

System V on Vexen and PDP11s also have different implementations of
shared memory.  The Vax version has real segments that you can put
anywhere, with IPC protection mechanisms; the PDP11 version is has a
different interface, substituting filesystem protections for the IPC
ones.  Also, segment sizes on the PDP11 are fixed at 4k, while
they're variable in full System V implementations.


Dave Brownell
{allegra,floyd,ihnp4,seismo}!harvard!brownell