MC9S12XDP512CFU
Model | MC9S12XDP512CFU |
Description | 16-BIT, FLASH, 40MHz, MICROCONTROLLER, PQFP80 |
PDF file | Total 1348 pages (File size: 8M) |
Chip Manufacturer | PHILIPS |
Chapter 6 XGATE (S12XGATEV2)
ROR
Operation
Rotate Right
ROR
RD
n
bits
n
= RS or IMM4
Rotates the bits in register RD
n
positions to the right. The upper
n
bits of the register RD are filled with
the lower
n
bits. Two source forms are available. In the first form, the parameter
n
is contained in the
instruction code as an immediate operand. In the second form, the parameter is contained in the lower bits
of the source register RS[3:0]. All other bits in RS are ignored. If
n
is zero no shift will take place and the
register RD will be unaffected; however, the condition code flags will be updated.
CCR Effects
N
∆
N:
Z:
V:
C:
Z
∆
V
0
C
—
Set if bit 15 of the result is set; cleared otherwise.
Set if the result is $0000; cleared otherwise.
0; cleared.
Not affected.
Code and CPU Cycles
Source Form
ROR RD, #IMM4
ROR RD, RS
Address
Mode
IMM4
DYA
0
0
0
0
0
0
0
0
1
1
Machine Code
RD
RD
IMM4
RS
1
1
0
1
1
1
1
1
1
Cycles
P
P
MC9S12XDP512 Data Sheet, Rev. 2.21
272
Freescale Semiconductor