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PM0044 Datasheet(PDF) 137 Page - STMicroelectronics

No. de pieza PM0044
Descripción Electrónicos  STM8 CPU programming manual
PDF  162 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM0044 Datasheet(HTML) 137 Page - STMicroelectronics

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PM0044
STM8 instruction set
Doc ID 13590 Rev 3
137/162
Syntax
RRC dst
e.g. RRC (X)
Operation
Description
The destination is either a memory byte location or a register. This
instruction is compact, and does not affect any register when used with
RAM variables.This instruction shifts all bits of the register or memory, one
place to the right. Bit 7 of the result is a copy of the CC.C bit value before
the operation.
Instruction overview
N
⇒
R7
Set if bit 7 of the result is set (negative value), cleared otherwise.
Z
⇒
R7.R6.R5.R4.R3.R2.R1.R0
Set if the result is zero (0x00), cleared otherwise.
C
⇒
b0
Set if, before the shift, the LSB of register or memory was set, cleared
otherwise.
Detailed description
See also: RLC, SRL, SLL, SRA, SWAP, ADC, SLA
RRC
Rotate Right Logical through Carry
RRC
mnem
dst
Affected condition flags
VI1
H
I0
N
Z
C
RRC
Reg
-
-
-
-
N
Z
bit0
RRC
Mem
-
-
-
-
N
Z
bit0
dst
Asm
cy
lgth
Op-code(s)
ST7
A
RRC A
1
1
46
✗
shortmem
RRC $10
1
2
36
XX
✗
longmem
RRC $1000
1
4
72
56
MS
LS
(X)
RRC (X)
1
1
76
✗
(shortoff,X)
RRC ($10,X)
1
2
66
XX
✗
(longoff,X)
RRC ($1000,X)
1
4
72
46
MS
LS
(Y)
RRC (Y)
1
2
90
76
✗
(shortoff,Y)
RRC ($10,Y)
1
3
90
66
XX
✗
(longoff,Y)
RRC ($1000,Y)
1
4
90
46
MS
LS
(shortoff,SP)
RRC ($10,SP)
1
2
06
XX
✗
[shortptr.w]
RRC [$10]
4
3
92
36
XX
✗
[longptr.w]
RRC [$1000].w
4
4
72
36
MS
LS
([shortptr.w],X)
RRC ([$10],X)
4
3
92
66
XX
✗
([longptr.w],X)
RRC ([$1000.w],X)
4
4
72
66
MS
LS
([shortptr.w],Y)
RRC ([$10],Y)
4
3
91
66
XX
✗
Cb7
b0



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