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ROTXL (ROTate with eXtend carry Left)
ROTXL
<Description>
This instruction rotates an 8-bit general register one bit to the left through the carry flag. The
carry flag is rotated into the least significant bit of the register. The most significant bit rotates
into the carry flag.
The operation is shown schematically below.
<Instruction Formats>
<Operation>
Rd (rotated with carry left)
→
Rd
<Assembly-Language Format>
ROTXL
Rd
<Examples>
ROTXL R1H
<Operand Size>
Byte
<Condition Code>
I: Previous value remains unchanged.
H: Previous value remains unchanged.
N: Set to "1" if the result is negative;
otherwise cleared to "0."
Z: Set to "1" if the result is zero; otherwise
cleared to "0."
V: Cleared to "0."
C: Receives the previous value in bit 7.
I
H
N
Z
V
C
—
—
—
—
↕
↕
0
↕
Register direct
ROTXL
Rd
1
2
0
rd
2
Addressing
mode
Mnem.
Operands
1st byte
Instruction code
No. of
states
2nd byte
3rd byte
4th byte
C
Bit 7
Bit 0
MSB
LSB
100
Содержание H8/300 Series
Страница 2: ...H8 300 Programming Manual...