Bswap (High /Low Byte In N Block Exchange) - Panasonic FP7 Series Command Reference Manual

5.15 BSWAP (High /Low Byte in n Block Exchange)

5.15 BSWAP (High /Low Byte in n Block Exchange)

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Ladder diagram
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List of operands
Operand Description
S The starting address of the device to exchange the high and low bytes
n The number of words to exchange the high and low bytes
D Device address of destination of the exchanged data
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Available devices (●: Available)
Operan
d
W W
X Y
S ● ●
n ● ●
D ● ●
(Note 1) Only 16-bit devices can be modified. (Integer constants cannot be specified.)
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Outline of operation
● This instruction exchanges the high byte and low byte for [n] words from the device address
specified by [S], and transfers it to the area starting from [D].
● The maximum number of exchanged words is 65535.
● When [n] is 0, no operation is performed.
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Processing
Example) Operation unit: 16 bits (US, SS)
5-34
16-Bit device:
W W W S D L
R L S D T D
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● ● ● ●
● ● ● ●
32-Bit
device:
TS TE
U W
WI IX
C C
M O
S E
Real St
Integer numbe rin
r g
D
K H SF " "
Ｕ
F
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WUME-FP7CPUPGR-12
Index
modifie
r
(Note 1)
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