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PC912XDP512F0MPVR 데이터시트(PDF) 263 Page - Freescale Semiconductor, Inc

부품명 PC912XDP512F0MPVR
상세설명  HCS12X Microcontrollers
PDF  1348 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

PC912XDP512F0MPVR 데이터시트(HTML) 263 Page - Freescale Semiconductor, Inc

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Chapter 6 XGATE (S12XGATEV2)
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
263
Operation
n = RS or IMM4
Shifts the bits in register RD n positions to the right. The higher n bits of the register RD become filled
with zeros. The carry flag will be updated to the bit contained in RD[n-1] before the shift for n > 0.
n can range from 0 to 16.
In immediate address mode, n is determined by the operand IMM4. n is considered to be 16 in IMM4 is
equal to 0.
In dyadic address mode, n is determined by the content of RS. n is considered to be 16 if the content of RS
is greater than 15.
CCR Effects
Code and CPU Cycles
LSR
Logical Shift Right
LSR
NZ
V
C
∆∆∆∆
N:
Set if bit 15 of the result is set; cleared otherwise.
Z:
Set if the result is $0000; cleared otherwise.
V:
Set if a two´s complement overflow resulted from the operation; cleared otherwise.
RD[15]old ^ RD[15]new
C:
Set if n > 0 and RD[n-1] = 1; if n = 0 unaffected.
Source Form
Address
Mode
Machine Code
Cycles
LSR RD, #IMM4
IMM4
0
0
0
0
1
RD
IMM4
1
1
0
1
P
LSR RD, RS
DYA
0
0
0
0
1
RD
RS
1
0
1
0
1
P
0
RD
0
0
0
n bits
C
n



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