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8086
Object
Module
Formats
Version
4.0
P
(Paqe-Resident)
is
a
l-bit
subfield
which,
if
1,
demands
that
the
seqment
be
located
in
~AS
without
crossinq
a
page
boundary.
·(This
corresponds
to
the
Min-paqe-
relocation
type
of
8080
R&L.)
The
FRAME
NUMBER
and
OFFSET
fields
(present
only
for
absolute
seqments,
A-9
or
A-5)
specify
the
placement
in
MAS
of
the
absolute
segment.
The
range
of
OFFSET
i$
constrained
to
be
between
0
and
15
inclusive.
If
a
value
larQer
than
15
is
desired
for
OFFSET
then
an
adjustment
of
the
FRAME
NUMBER
should
be
done.
The
LTL
OAT
subfield
specifies
the
attributes
format:
(present
only
for
of
an
LTL
seqment.
LTL
seqments,
A=n)
It
has
the
followinq
*********************************
* I I I I I I I *
* G I Z 1 z 1 z I Z I Z I Z 18SM*
* I I I I I I I *
*********************************
-
zls
indicate
that
these
I-bit
fields
have-
not
currently
been
assigned
a
function.
These
bits
are
required
to
be
zero.
G
(Group)
is
a
I-bit
field
that,
if
1,
specifies
that
the
seqment
is
a
member
of
a
group,
and
should
be
loaded
as
a
part
of
the
group.
BSM
(Big
Segment
~aximum
Length)
is
a
I-bit
field
that,
if
1,
specifies
that
the
maximum
segment
lenqth
is
exactly
~4K.
In
this
case
the
MAXIMUM
SEGMENT
LENGTH
must
contain
zero.
The
MAXIMUM
SEGMENT
LENGTH
subfield
(present·
only
for
LTL
seqments,
A=6)
specifies
the
maximum
length
in
bytes
of
the
LTL
segment.
(The
purpose
of
this
field
is
to
provide
information
to·
a
loader
as
to
reserve
memory
space
as
much
as
possible
up
to
the
value
in
this
field.)
This
va~.ue
must
be
qreater
than
or
equal
to
the
value
in
the
SEGMENT
LENGTH
field.
The
MAXIMUM
SEGMENT
LENGTH
field
is
only
big
enouqh
to
hold
numbers
from
0
to
n4K-l
inclusive.
The
8SM
attribute
bit
in
the
LTL
OAT
field
(see
above)
must
be
used
to
give
the
seqment
a
MAXIMU~
length
of
h4K.
The
GROUP
OFFSET
subfield
(present
only
for
LTL
seoments,
A=6)
qives
the
offset
of
the
first
byte
of
the
seqment
relative
to
the
base
of
the
parent
qroup.
It
must
be
zero
if
the
G
bit
is
0.
This
value
will
be
used
by
the
loader
to
determine
the
location
relative
to
the
qroup
base
of
the
data
records
belonainq
to
the
seornent.
SEGMENT
LENGTH
The
SEGMENT
LENGTH
field
qives
the
lenqth
of
the
seq~ent
in
bytes.
The
lenqth
may
be
zero:
if
so,
LINK-3~
(unlike
LINK-SO)
will
not
delete
the
segment
from
the
module.
The
SEG~ENT
LENGTH
field
is
only
bi~
enouqh
to
hold
numbers
from
a
to
~4K-l
inclusive.
The
8
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