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28
All
and more about Sharp PC-1500 at http://www.PC-1500.info
©
SBI
(SuBtract
Immediate)
The contcms
of
the
;iccumulator
:ire
subtrJCl<'d
by
the immediate data
including
C.
C.
H.
Z.
and
V
may change.
•
l:c>rn1at
SB
I
i\.i
(EX)
SBI
A. 07H
A=
0
0
'--
i-~
0
C=
I
~
A=
I
0
0
1
•=
I
1
1
I
C=O
0
0
0
0
0
0 0
0
1
0
0
•
Op<'rnliun
1
\
i
-
C-A
(C.
11.
Z.
and
V
may
ch;ingc.)
or.
/\
+l~
C
-· 1\
(C.
H.
Z.
and
V
11x1y change.)
()
'
I
I
()
0
Eiecult
-
-·A=
0
0
'--
c-
1
.
0 1 1 1 0 0
H=
O.
Z
0
•
V-
O
0
DCS (Decimal
Subtract)
·rhe contents
of the
accunl
ulalor
~•re
dc<:in1al
subtratt<:<J
by
the
ex
1
crnal
n11.:1nory
including
C.
and
its
r(.>sUlt
is
st
ored
in
the
accumulator.
C. H.
Z.
and
V
may change.
•
Format
DCS
( Rreg)
DCS ;i(Rrcg)
(EX)
•
Opcrnlion
I
) A
+
[~o-pc_r_
a-
nd
~]
+
C
-
A
(C.
H. Z. and
V
ma~
ch::rngc.)
2)
1
\
+
DA
-
/\
Where.
0/\
is
used for cornpcn.ation
of
decimal
number
which i, dependent on the \aluc
ofn:og.'
C
and
II
in rcg;ml to item I).
c
0
0
H
Xreg
47()()H
Contents
After
t .cteution
of OCS
A
c
Decimal
slbtratl
1
M
ol
4100H
c
Ii
A
•
42H
31H
I
I
llH
42-
31
0
11
42>1
31H
0
tOH
42-
31-
1
10
23H
5'!H
0
0
69H
23-
54
0=69
-
1
00
23H
I
54H
0
0
0
68H
23
-
54
-
1
68
100
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