Table Data Processing Instructions; Swap - Omron SYSMAC CP Series Instruction & Reference Manual

Table Data Processing Instructions

SWAP

Instruction
SWAP BYTES
Symbol
Applicable Program Areas
Area Step program areas
Usage OK
Operands
Operand
N Number of words
R1 First word in range
N: Number of words
N specifies the number of words in the range and must be 0001 to FFFF hexadecimal (or &1 to
&65,535).
R1: First word in range
Leftmost byte Rightmost byte
15
R1
to
to
R1+(N–1)
Note R1 and R1+(N-1) must be in the same data area.
Operand Specifications
Word addresses
Area
CIO WR HR
N
OK OK OK
R1
Flags
Name
Error Flag
CP1E CPU Unit Instructions Reference Manual(W483)
Mnemonic Variations
SWAP @SWAP
Description
8 7 0
to
AR T C DM
OK OK OK OK
Label
P_ER • ON if the N is 0.
• OFF in all other cases.
Function
code
Switches the leftmost and rightmost bytes in all of
637
the words in the range.
SWAP
SWAP(637)
N N: Number of words
R1
R1: First word in range
Subroutines
OK
Data type
UINT
UINT
Indirect DM addresses
Constants
@DM *DM
OK
OK OK
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Operation
2 Instructions
Function
Interrupt tasks
OK
Size
1
Variable
CF Pulse bits TR bits
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2-253
2