Hitachi HIDIC MICRO-EH Applications Manual page 126

Item number Application instructions-7
Ladder format
ROL (d, n)
Instruction format
ROL (d, n)
Usable I/O
d I/O to be rotated
Number of bits to be
n
rotated
Function
•
Rotates the contents of d to the left (toward the upper digits) by n bits.
•
The content of C (R7F0) is set in the nth bit from the least significant bit.
•
The content of the nth bit from the least significant bit is set in C (R7F0).
Before execution
C (R7F0)
After execution
Bn
If d is a word: Designates the shift amount, depending on the contents (0 to 15) of the lower 4 bits (b3 to b0) of n
(WX, WY, WR, WM, TC). (Upper bits are ignored and considered as "0.")
The n (constant) can be set to 0 to 15 (decimal).
If d is a double word: Designates the shift amount, depending on the contents (0 to 31) of the lower 5 bits (b4 to b0) of n
(WX, WY, WR, WM, TC). (Upper bits are ignored and considered as "0.")
The n (constant) can be set to 0 to 31 (decimal).
Notes
•
If n is equal to "0," the rotation is not performed. The previous state is retained in C.
Name
Condition code
R7F4 R7F3 R7F2
DER ERR SD
Number of steps
Condition
Bit
R, TD, SS,
X Y M CU, CT WX WY
n bits
B1 B2 B3 Bn
Most significant bit (MSB)
5-76
Chapter 5 Instruction Specifications
Rotate left
Processing time (µs)
R7F1 R7F0
Average Maximum
V C
46
↕
Steps
3 54
Word Double word
WR,
WM TC DX DY
d
C B1 B2 B3
n bits
Least significant bit (LSB)
Remark
Upper case: W

Lower case: DW

DR,
Other
DM
The constant is set in
decimal.
Bn-1