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7-44

DROL(P),DRCL(P)

7.2.4

Left rotation of 32-bit data (DROL(P),DRCL(P))

DROL(P),DRCL(P)

Function

DROL

(1) The 32-bit data of the device designated at

, not including the carry flag, is rotated n-bits

to the left. The carry flag turns ON or OFF depending on its status prior to the execution of
the DROL 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 data is rotated 2 bits to the left since the
remainder of 34/32 1 is "2".

DRCL

(1) Rotates 32-bit data of the device designated by

, including the carry flag, n-bits to the left.

The carry flag turns ON or OFF depending on its status prior to the execution of the DRCL
instruction.

: Head number of the devices to rotate (BIN 32 bits)

: Number of rotations (0 to 31) (BIN 16 bits)

Setting

Data

Internal Devices

R, ZR

Constants

K, H

Other

Bit

Word

Bit

Word

––

Basic

Process

High

performance

Redundant Universal

Command

DROL, DRCL

DROLP, DRCLP

indicates an instruction symbol of DROL/DRCL.

b16

b31

b17

b30 b29 b28 b27

b18

b15 b14

b5 b4 b3

Carry flag

(SM700)

b1 b0

n-bit rotation

b16

b31

b17