Page 42 - slides.dvi
P. 42
4.
5.
3.
1.
2.
Operating
OS
e.g.
NB:
has
Systems
memory.
of
DOS
—
vs
Relocation
Relocation
process
on
Unit
logical
privilege
Relocation
never
to
register
register
to
80x86
Physical
—
sees
CPU
4
(MMU),
holds
update
physical
contents
the
e.g.
logical
physical
are
address
value
relocation
Addresses
relocation
of
addresses
added
yes
is
address
address fault
to
the
—
registers,
done
+ physical no limit Relocation Register Management Mapping Logical
register.
base
each
at
base
simply
logical
address
memory
address
run-time
Memory by
address
owned
is
manipulates
address
a
by
the
Memory
logical
tuple
before
it
(s,
is
o).
process.
sent
addresses.
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