mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 1269

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

MPC823 Instruction Set—rlwimi
rlwimi
Assembler Syntax
Definition
Operation
Description
FIELD
FIELD
BIT
BIT
16
0
17
1
SH
18
2
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20
For More Information On This Product,
19
3
rlwimi.
r
m
rA
by operand SH. A mask is generated having 1 bits from bit MB
through bit ME and 0 bits elsewhere. The rotated data is inserted
into rA under control of the generated mask.
Note that rlwimi can be used to insert a bit field into the contents
of rA using the methods shown below:
Other registers altered:
rlwimi
Rotate Left Word Immediate then Mask Insert
n
The contents of rS are rotated left the number of bits specified
20
ROTL(rS,
MPC823 REFERENCE MANUAL
4
SH
MASK(MB, ME)
(r & m) | (rA & ¬ m)
To insert an n-bit field, that is left-justified rS, into rA
starting at bit position b, set SH = 32 – b, MB = b, and
ME = (b + n) – 1.
To insert an n-bit field, that is right-justified in rS, into rA
starting at bit position b, set SH = 32 – (b + n), MB = b,
and ME = (b + n) – 1.
Condition Register (CR0 field):
Affected: LT, GT, EQ, SO(if Rc = 1)
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21
5
22
rA,rS,SH,MB,ME (Rc = 0)
rA,rS,SH,MB,ME (Rc = 1)
6
n
)
MB
23
7
24
S
8
25
9
10
26
11
27
ME
12
28
13
29
A
MOTOROLA
14
30
RC
15
31