Load word left (3/3) – NEC Network Controller uPD98502 User Manual
Page 517
APPENDIX A MIPS III INSTRUCTION SET DETAILS
Preliminary User’s Manual S15543EJ1V0UM
517
LWL
Load Word Left (3/3)
LWL
Given a doubleword in a register and a doubleword in memory, the operation of LWL is as follows:
B
C
D
E
F
G
A
H
J
K
L
M
N
O
I
P
Register
Memory
LWL
vAddr2..0
Destination
Type
Offset
(LEM)
0
1
2
3
4
5
6
7
S S S S P F G H
S S S S O P G H
S S S S N O P H
S S S S MN O P
S S S S L F G H
S S S S K L G H
S S S S J K L H
S S S S I J K L
0
1
2
3
0
1
2
3
0
0
0
0
4
4
4
4
Remark
LEM
Little-endian memory (BigEndianMem = 0)
Type
AccessType (see Table 2-3. Byte Specification Related to Load and Store Instructions)
sent to memory
Offset
pAddr2..0 sent to memory
S
sign-extend of destination bit 31
Exceptions:
TLB refill exception
TLB invalid exception
Bus error exception
Address error exception