A-1-7 Data Shift Instructions - Omron CP1E CPU UNIT SOFTWARE User Manual

A-1-7 Data Shift Instructions
Instruction Mnemonic
SHIFT REGIS- SFT
TER
REVERSIBLE SFTR
SHIFT REGIS-
TER
WORD SHIFT WSFT
ARITHMETIC ASL
SHIFT LEFT
ARITHMETIC ASR
SHIFT RIGHT
ROTATE LEFT ROL
ROTATE ROR
RIGHT
CP1E CPU Unit Software User's Manual(W480)
Variations Symbol/Operand
---
Data
SFT(010)
input
Shift
St
input
E
Reset
input
St: Starting word
E: End word
@
SFTR(084)
C
St
E
C: Control word
St: Starting word
E: End word
@
WSFT(016)
S
St
E
S: Source word
St: Starting word
E: End word
@
ASL(025)
Wd
Wd: Word
@
ASR(026)
Wd
Wd: Word
@
ROL(027)
Wd
Wd: Word
@
ROR(028)
Wd
Wd: Word
Function
Operates a shift register.
E St+1, St+2
Lost
Creates a shift register that shifts data to either the right or the left.
E
E
Data
input
C: Control Word
15 14 13 12
Shift direction
1 (ON): Left
0 (OFF): Right
Data input
Shift input
Reset
Shifts data between St and E in word units.
E
Lost
Shifts the contents of Wd one bit to the left.
Wd: 100CH
15
1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1
CY
1 0 0 1 0 0 0 1 0 0 0 1 0 0 0
Shifts the contents of Wd one bit to the right.
Wd: 100CH
15
1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1
0
0 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0
Shifts all Wd bits one bit to the left including the Carry Flag (CY).
Shifts all Wd bits one bit to the right including the Carry Flag (CY).
Wd+1
Appendices
St
Status of data
input for each
shift input
St
Data input
Shift
direc-
St tion
St
0
0
1 0
0
CY
1
Wd
A-15