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7-41
DROR(P),DRCR(P)
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7.2 Rotation instruction
7.2.3 Right rotation of 32-bit data (DROR(P),DRCR(P))
7.2.3 Right rotation of 32-bit data (DROR(P),DRCR(P))
DROR(P),DRCR(P)
Function
DROR
(1) The 32-bit data of the device designated at , not including the carry flag, is rotated n-bits
to the right.
The carry flag turns ON or OFF depending on its status prior to the execution of the DROR
instruction.
(2) When a bit device is designated for , a rotation is performed within the device range
specified by digit specification.
The number of bits by which a rotation is executed is the remainder of n/(specified number of
bits).
For example, when n 31 and (specified number of bits) 24 bits, the remainder of 31/24
1 is "7", and the data is rotated 7 bits.
(3) Specify any of 0 to 31 as n.
If the value specified as n is 32 or greater, the remainder of n / 32 is used for rotation.
For example, when n 34, the contents are rotated two bits to the right since the remainder
of 34 / 32 1 is "2".
: Head number of the devices to rotate (BIN 32 bits)
n : Number of rotations (0 to 31) (BIN 16 bits)
Setting
Data
Internal Devices
R, ZR
J\
U\G
Zn
Constants
K, H
Other
Bit Word Bit Word
–– ––
n ––
Basic
Process
High
performance
Redundant
Universal
Command
Command
P
D n
D
n
DROR, DRCR
DRORP, DRCRP
indicates an instruction symbol of DROR/DRCR.
D
D
D
b2b16b31 b17b30b29b28b27 b18 b15b14
b5
b4 b3
Carry flag
(SM700)
b1 b0
+1
n-bit rotation
D D
D