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4.
The
File
System
Moving
interrupt
will
be
invoked.
The
application
should
adjust
any
pointers
necessary.
The
Translate
Address
interrupt
can be used
to
aid
in
making
these
adjustments.
When
the
hook
routine
has completed
any
adjustments
it
needs
to
make,
it
should perform
an
IRET
to return
to
HH
O/S.
5.
HH
O/S
will
complete whatever
function
call
caused
the
file
system
to
move, and
then
return
to
the
program as
usual.
Because
HH
O/S
adjusts the
program's
segment
registers automatically,
it
will
not
be
necessary
for
a program
to
use
this
hook
unless
it
refers
to
files
using absolute
file
addresses
rather
than the
read/write function
calls.
Use
of
this
hook
requires careful
programming, and
should
generally
be
avoided.
NOTE:
HH
O/S
is
not
reentrant.
Hook
routines
should
not
perform
any O/S
or
DBMS
function
calls.
The
only
O/S
operations allowed
within
the
hook
routine
are
INT
46h,
Get
File
Address,
and
INT
47h,
Translate
Address.
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