Sharp PC-1500 Technical Reference Manual page 32

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©
ADR (ADd Rreg)
Contents of the accumulato r arc added to the R register.
C.
H. Z. and V may change.
• 1 ;·orn1ar
ADR Rreg
•Operation
I) RI. + A - RL
(C. H. Z. a
nd
V
may change.)
2) RH
+
C - · RH
(EX) ADR Xreg
Contents of the accumulator are a<1ded to X register.
A =
I
1
0 0 0 0
l
iJ
XL =
jo
0
0
I
0
I
t
I
XL =
I
1
0 0
0
I 0
~ Execute
0 0 - Xft=
0
0
0
0
t
0
I
l
I
XH=
10
0
0
0 I 0
ol
Ca l
1
H= O ,
Z=O .
V= t
©
SBC (SuBtract with Carry)
The contents of' the accurnulator are subtrJ.cted by the internal register or e. x ternul
rncnlory
including
C.
and
its result is
stored
in
the accumulato r.
T his operat ion
mai•
also be expressed in the following manner.
Con1plcrnent of the internal J' c gistcr or external
n1cn1 ory
is obt;:tincd fir..st. additi<>n is
carried o ut including carry, then its result is stored in the
acc1in1ulator.
C. H, Z. and V ma)'
change.
• Forn1at
SBC
RI.
SBC
RH
SBC
( Rrcg)
SBC #(Rreg)
SBC (ab)
SBC il(ab)
(EX) SBC XL
•Operation
A - (operand] - C - A
(C. H. Z. and V may change.)
or.
A + (01i<:rand )
+
C - A
(C.
H. Z. a nd V ma y change.)
Contents of XL register are subtracted from the ace umulator.
A=
loo
0 0
ol
XL =
I
0 0
l
0 0 0
0
l
I
c=O
.!}
A=
Io
0
0 0
O
I
Execute
A=
I
0
0
0 l 0 l l
l
l
XL=
I
1
0 l
I I
o
I
C= I • H= I • Z = O , V= 0
C= I
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