Motorola MPC823e Reference Manual page 1230

Microprocessor for mobile computing
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MPC823e Instruction Set—lhax
lhax
Assembler Syntax
BIT
0
1
2
FIELD
31
BIT
16
17
18
FIELD
B
Definition
Operation
Description
B-72
lhax
rD,rA,rB
3
4
5
6
7
19
20
21
22
23
Load Half Word Algebraic Indexed
if rA = 0 then b ← 0
else b ← (rA)
EA ← b + (rB)
rD ← EXTS(MEM(EA, 2))
EA is the sum (rA|0) + (rB). The half word in memory addressed
by EA is loaded into the low-order 16 bits of rD. The remaining
bits in rD are filled with a copy of the most-significant bit of the
loaded half word.
Other registers altered:
None
POWERPC ARCHITECTURE
LEVEL
UISA
MPC823e REFERENCE MANUAL
8
9
10
11
12
D
24
25
26
27
28
343
SUPERVISOR
OPTIONAL
LEVEL
13
14
15
A
29
30
31
0
FORM
X
MOTOROLA

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