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All
and
more about
Sharp
PC-1500
at http://www.PC-1500.info
@
ORR (Digit Rotate
Right)
Righi
ro!ation
takes
between
1he accumula1or and the
external
mem<>ry
(Xreg)
or
#(Xrcg)
in unit
of digit
(4
bits).
In
mher words. 1he low
order
4
bi1s
of
1he external
memory
a
rc
moved 101hc
low order
4 bi1s
of
1he
accumulator.
the
low order
4 bils of
the
accumulator arc moved
10
the
high
order 4 bi1s of
the
external
memory.
1he high order 4
bi1s of 1he
ex1ernal
memory
arc
moved
10
1hc low order
4
bi1s of
the
ex1ernal
memory.
and
1hc
h
igh
order
4
bits
of the
external n1crnory
arc
n1ovcd
to
the
high
ordcr4
bits of
the accun1ulator
n1cn1ory
at
all
tin1cs.
No change
takes
place
in
!lags.
•
Format
()RR
(Xrcg)
DRR
#(Xreg)
(EX)
DAR
(Xreg)
Xrcg=
4700H
•
Operation
A
A=
I
t
1
0
0
0
0 0
t
I
Executt
I
I
1-
·=i
_J
Mcmoty
((X<eg)
O<
e(Xrcg)J
A
=
~I
o
__
o
_
o_o._o
_
1
_o~I
Contents
=
I
0
I
0
0
0
0
1
0
I
ct
4700H
.
Ccnte<lt$
_
I
0
0
0
t
0
t
0
0
I
of
4700H
-
®
AEX
(EXchange
Ace)
The
high order
4
bits of
the
accumulator are
swapped
with
the
low
order
4
bits.
No
change
takes
place
in
flags.
•Format
AEX
(EX)
AEX
•Operation
f
t
A
I
I
Execute
I
A=
t_
I
0
0
t
0
t
0
.
- - >
A=
.
1
0 t 0
t
Do not sale this PDF!!!
1
0
0
']
41
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