Sharp CE-150 - Page 356

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5-3. Expression of variable and program
116
5-3-1. Expression of decimal number
Dcc in lal n un lbcr consists () f eight bytes \vhic h arc u::;cd to repres en t nun 1bcr 'vi thi n a ra nge
of - 9.999999999 X I0
9
'
to + 9.999999999 X 10 '" and ar e composed ofth cc xponenl pan.
inant iss a si gn and n1ant iss a pare
: _J
Exp o nent pa.rt: cxpfCSSCd n~ o bi na ry nu n1b ¢r .
- -=====-....'._, -
l
l
L Mantisso OO H
Ne g at ive rlumbc r is repr es e nted by
co mp 1 cmc 1 ~ t.
Mant issa si gn
Ex ponen t
M
(ln 1issa si gn : OOH ( Po sit i ·. •c)
SO H ( Ne g\'ltivc)
(Example when numeric is stored from 7 AOOH to 7 A07H)
7A O~ 7A0 7H
[ 0 3 H
.
1 5 H
OOH OOH j OOH OO H 1 500
OOH
OOH
r 0 0 H
OOH i 1 2 H
3
4H ! Ss H l oo H ' ooH QOM 1. 234 56
1
F OH OOH I 2H
3 4 M 56 H 7 8H j 90 H OOH
0.
00 1 23 4 5$7890 12
L 0 8 H
80 H
12 H j 3 4 H
OO H
00 H j 00 H OOH - 1.2 34 X10"
5-3-2. Expression of binary number
llin ar y nuntbcr consis ts of t igh t hyt cs:. but fi ve byt es arc not used . le ex pre ss es a binary
nu 1n bt r \Vilh in an int eger ran g..: of - 32 768 thru +32767.
Ne9 a1i ve nt 1 n) bC f is cxpessad by a comp l eo ~ en t.
l nv a liCS <!'1ta
(Example when numeric is stored fr'om 7A00H to 7A07H)
71\ 00H 7 A0 7H
* .,- * T * * j B2 H 0 5 H j DCH j *
I ** ; ,- * I * B2H FF H I F BH I *-
f- ] * * -B 2 ~1 7 F H . f F H * -I
* * 1 * * B2H l 6 0 l i! O OM I *
NO TE: No ted \•1 ith an asterisk (* ) i nd i ca1 es invali(i d ata .
1500
- 5
327 67
- 32768
5-3-3. Expression of character string
(:haractcr st rin g. in f or rna tio n is co nlp o sc: d of eight byt c..· s ( 'vit h four hyt es of valid da ta ) and
it r cs id t-s in th e address <.:o ntai ne.:d in t he character s tri ng i nJo rn1 ation.
*
* *
*
Invalid data
DO H ADD H A DDL L<NG TH
S • ~e ol c.: ha rac 1er strinrr 01 H thr'l l 5011
L ead ing address of character stri ng :
[)oH L e ~1(f i ng "-cldress- t:$ ize or OOOO M tl)fu FFFFlt
c f ch.;1r .;1ct er c.: h ~1ra c!et
siri ng si ri ng
Examp le lhat lhc character string lnfor'mation resides in the ari thmetic r eg ist er a nd l he
ch ara cte r s iring ·' SHARP'' resides in the string buffer.
7A 00H
l * I * ""!- *_'_ *_
7 A0 71i
DO H 7 Bfi j I OH 05 H
7B1 CH
70 14 H
53H 48H 41H 52H S~H
$ H A i1 i'
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