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lbzx
Load Byte and Zero Indexed
PPC440x5 CPU Core User’s Manual Preliminary
Page 324 of 589
instrset.fm.
September 12, 2002
lbzx
Load Byte and Zero Indexed
EA ← (RA|0) + (RB)
(RT)
←
24
0 || MS(EA,1)
An effective address (EA) is formed by adding an index to a base address. The index is the contents of
register RB. The base address is 0 if the RA field is 0 and is the contents of register RA otherwise.
The byte at the EA is extended to 32 bits by concatenating 24 0-bits to its left. The result is placed into
register RT.
If instruction bit 31 contains 1, the contents of CR[CR0] are undefined.
Registers Altered
•RT
Invalid Instruction Forms
• Reserved fields
lbzx RT,RA, RB
31 RT RA RB 87
0 6 11 16 21 31