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PM0044 Datasheet(PDF) 148 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) 148 Page - STMicroelectronics

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STM8 instruction set
PM0044
148/162
Doc ID 13590 Rev 3
Syntax
SRAW dst
e.g. SRAW X
Operation
Description
The destination is an index register. It performs a signed division by 2. The
sign bit (15) is not modified.
Instruction overview
N
⇒
R15
Set if bit 7 of the result is set (negative value), cleared otherwise.
Z
⇒
R15.R14.R13.R12.R11.R10.R9.R8.R7.R6.R5.R4.R3.R2.R1.R0
Set if the result is zero (0x0000), cleared otherwise.
C
⇒
b0
Set if, before the shift, the LSB of register or memory was set, cleared
otherwise.
Detailed description
See also: SRA, SRLW, SLLW, RRCW, RLCW, SWAPW
SRAW
Shift Right Arithmetic
Word
SRAW
mnem
dst
Affected condition flags
VI1
H
I0
N
Z
C
SRAW
Reg
-
---
N
Z
bit0
dst
Asm
cy
lgth
Op-code(s)
ST7
XSRAW X
2
1
57
YSRAW Y
2
2
90
57
b15
b15
b0
C



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