Справочник Пользователя для Mitsubishi Electronics QCPU

6-71

DINC(P),DDEC(P)

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.2 Arithmetic Operat

ion Instr

uctions

6

.2.17 Incrementing and

 decr

ementing 32-

bit BIN 

data (DI

NC(P)

,DDEC(

P

))

Incrementing and decrementing 32-bit BIN data 
(DINC(P),DDEC(P))

DINC(P),DDEC(P)

Function

(1) Adds 1 to the device designated by 

 (32-bit data).

(2) When DINC/DINCP operation is executed for the device designated by 

, whose content is 

2147483647, the value  2147483648 is stored at the device designated by 

.

(1) Subtracts  1 from the device designated by 

 (32-bit data).

(2) When DDEC/DDECP operation is executed for the device designated by 

, whose content 

is 0, the value  1 is stored at the device designated by 

.

Operation Error

(1) There are no operation errors associated with the DINC(P) or DDEC(P).

:

 

Head number of devices for DINC(+1) or DDEC(-1) operation (BIN 32 bits)

Setting 

Data

Internal Devices 

R, ZR

J

\

U

\G

Zn

Constants

Other

Bit

Word

Bit

Word

––

Command

Command

P

D

D

DINC, DDEC

DINCP, DDECP

indicates an instruction symbol of 

DINC/DDEC.

D

D

D

b0

b16 b15

+1

73500 (BIN)

b31

73501 (BIN)

D

D

+1

D

D

b0

b16 b15

b31

D

D

D

b0

b16 b15

+1

73500 (BIN)

b31

73499 (BIN)

  1

D

D

+1

D

D

b0

b16 b15

b31

D

D