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8086
Object
Module
Formats
Version
4.0
Diaqrams
land
2
show
two
commom
cases.
R&L
attempts
to
inform
the
user
of
any
erroneous
self-relative
references
(TARGET
not
within
32K
from
LaC).
The
'symbol
beinq
referenced
must
be
within
the
defined
LSEG
independent
of
the
value
at
LOCATION
to
be
applied:
EXAMPLES:
J~P
SYM
+
10
or
JMP
SYM
- 2
The
symbol
SYM
will
have
an
offset
within
its
containinq
LSEG.
The
values
10
and
-2
are
siqned
numbers.
The
fixup
output
by
an
8989
translator
may
be
LOCATION: OFFSET
FRAME:
F~
TARGET:
EXTERNAL
(SYM)
,
DISPLACE~ENT
=
number
The
output
of
LINK
will
be:
LOCATION: OFFSET
FRAME:
F~
TARGET: SEGMENT(B), DISPLACEMENT =
number
+
offset
Where
'number
+
offset'
is
the
sum
of
the
siqned
'number'
and
the
non-
neoative
'offset'
of
the
symbol
from
the
base
of
the
segment
B.
Warninq
will
be
issued
if
overflow
or
underflow
occurs
durinq
the
co~putation
of
this
displacement.
LOCATE
will
compute
the
20-bit
address
of
TARGET
and
the
20-hit
address
of
LOCATION,
then
the
siqned
displacement
from
the
LOCATIO~
to
TARGET. A
warning
will
be
issued
if
the
displacement
is
not
within
32K.
Otherwise,
the
signed
displacement
is
added
to
the
value
in
LOCATION
and
no
checkinq
will
be
performed
for
this
last
addition.
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