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808fi
Object
Module
Formats
Version
4.8
'r
is
a
one
bit
subfield
that
specifies
whether
the
target
specified
for
this
fixup
is
defined
by
reference
to
a
thread
CT=l).
or
is
aiven
explicitly
in
the
FIXUP
field
(T=0).
P
is
specified
specified
Since
a
the
P
bit
attribute
a
one
bit
subfield
that
indicates
whether
the
tarqet
~
in
a
primary
way
(requires
a
TARGET
DISPLACEMENT,
P-0)
or
in
a
secondary
way
(requires
no
TARGET
DISPLACEMENT,
P=l).
tarqet
thread
does
not
have
a
primary/secondary
attribute,
is
the
only
field
that
specifies
the
primary/secondary
of
the
target
specification.
TARGT
is
interpreted
as
a
two
bit
subfie1d.
When
T=I,
it
provides
a
number
between
0
and
3,
corresponding
to
methods
T0,
•••
,
T3
or
T4,
•••
,
T7,
depending
on
the
value
of
P
(P
can
be
interpreted
as
the
high
order
bit
of
TO,
•••
,
T7).
When
the
tarqet
ia
specified
by
a
thread
(T=l)
then
TARGT
specifies
a
thread
number
(0-3).
FRAME
DATU~
is
the
"referent"
portion
of
a
frame
specification,
and
is
a
Segment
Index,
a
Grou·p
Index,
an
External
Index,
or
a
Frame
Number.
The
FRAME
DATUM
subfield
is
present
only
when
the
frame
is
specified
neither
by
a
thread
(F=O)
nor
explicitly
by
methods
F4
or
F5
or
Ffi.
'fARGET
DATUM
is
the
II
referent"
portion
of
a
tarqet
specification.
and
is
a
Segment
Index,
a
Group
Index,
an
External
Index
or
a
Frame
Number.
The
TARGET
DATU~
subfield
is
present
only
when
the
target
is
not
specified
by
a
thread
(T=0).
TARGET
DISPLACEMENT
is
the
2-
or
3-byte
displacement
required
by
"primary"
ways
of
specifyinq
TARGETs.
This
2-
or
3-byte
subfie1d
is
present
iff
P=0.