All and more about Sharp PC
-1
500 at http:/lwww.PC-1500.info
5-3.
Expression
of
variable
and
program
.
1
16
5-3-1. Expression of decimal number
Decimal
numb
er consists
of
eight bytes which
ar
c used
to
represent
nu
mber
wi
thin a range
of
- 9.999999999 X
10
99
to
+ 9.999999999 X
10
'"
and
ar
e composed of the
expone
nt
pan,
mantissa sign
and
mantissa part.
E
xp
onent par
t:
expressed in a binary n
umbe
r.
--
-
-------
l
l
L
OOH
Nega
tive num
ber
is r
ep
re
se
n
ted
by
comp
l
eme
nt.
Manti
ss
a
MarH
is
sa
s ig
r~
Mantissa sign:
OOH
(Positive)
80H (Negative)
Ex
ponen
t
(Exa
mple
wh
en
numeric
is
stored
from
7A
OO
H
to
7A07H)
7A
OO
H
7A07
H
03
H
OOH
1 5 H
OO
H OOH OOH OOH
OO
H
OO
H 1 2 H
3
4 H 5 6 H
OO
H OOH
FD H
OO
H I 2 H 3 4 H
56H
7 8 H
90
H
08H
80
H 1
2H
3 4 H OOH OOH
O
OH
5-3-2. Expression of binary number
OO
H
OOH
OOH
OOH
1
soo
1.
23456
0.
00
1
234567890
12
-
1.
234
x
10•
Binary
numb
er
co
nsists
of
eight bytes. bul
fi
ve
bytes
ar
e
no
t used. It expresses a
bi
nar
y
numbe
r within
an
integ
er
range
of
-32
768
thru + 32767.
Negative number
•s
expessed
by a comp
le
men
1
In
va
lid da
ta
B2
H
L
L.
Inval id data
61nary
number
(Example
when
numeric
is
stored
from
7AOOH
to
7A07H)
7AOO
H
I*
-
* *
*
B2H
OSH
OCH
f *
-
*
* *
B2H
FFH
FBH
l *
*
* *
B 2 H
7F
H
FFH
' *
* *
*
B2H
SOH
OOH
NOTE:
Not
ed
wit
h an a
sterisk
(
*)
i
nd
i
ca
tes i
nva
li
d
data
.
5-3-3. Expression of character string
7A07H
*
!__
*
*
l
500
- 5
32767
-
32768
Character string i
nforma
tion is composed of ei
ght
bytes (with fo ur bytes
of
va
li
d
da
t
a)
a nd
it
res
ides in t
he
add
res
s comained in the character st
ring
informati
on.
* I * j * I * I
DO
H I AODH I ADDL l
tE
NGTH
I Size ol character string:
01
H th
ru
SO
H
. . . . l Leading address of character s1·ring:
Invalid data
DOH
Leading
add
ress
--
Ls
ize of
OOOOH
th
ru FFFFH
of
character
ch
ara
c~er
s1 ri ''9
st
ring
E
xamp
le
that
the
character
str
i
ng
in
fo
rm
ation
resides
in
the a
ri
thmetic
register
and
the
character
str
ing
"
SHARP"
resides in the str
ing
b
uffe
r.
7AOOH
7A
07H
Li
I *
..LI
-*-'
~
*
-
'
DO
H I 7BH [
JO
H I
05H
I
7B14H
I 53H I
48H
4
1H
52H I 50H I
s H A R
p
Do
not sell this PDF !! !
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