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HCS12 데이터시트(PDF) 268 Page - Freescale Semiconductor, Inc

부품명 HCS12
상세설명  HCS12 Microcontrollers
PDF  452 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

HCS12 데이터시트(HTML) 268 Page - Freescale Semiconductor, Inc

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Instruction Glossary
S12CPUV2 Reference Manual, Rev. 4.0
268
Freescale Semiconductor
Operation:
Description:
Shifts all bits of accumulator B one place to the right. Bit 7 is loaded from the
C status bit. The C bit is loaded from the least significant bit of B. Rotate
operations include the carry bit to allow extension of shift and rotate
operations to multiple bytes. For example, to shift a 24-bit value one bit to
the right, the sequence LSR HIGH, ROR MID, and ROR LOW could be used
where LOW, MID, and HIGH refer to the low-order, middle and high-order
bytes of the 24-bit value, respectively.
RORB
Rotate Right B
RORB
C
b7 – – – – – – b0
C
CCR Details:
S
X
HIN
Z
V
C
––––
∆∆∆∆
N: Set if MSB of result is set; cleared otherwise
Z: Set if result is $00; cleared otherwise
V: N
⊕ C = [N • C] + [N • C] (for N and C after the shift)
Set if (N is set and C is cleared) or (N is cleared and C is set);
cleared otherwise (for values of N and C after the shift)
C: B0
Set if the LSB of B was set before the shift; cleared otherwise
Source Form
Address
Mode
Object Code
Access Detail
HCS12
M68HC12
RORB
INH
56
O
O



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