IBM PPC440X5 Bedienungsanleitung PDF herunterladen (Seite 321)

Load Byte and Zero

Preliminary PPC440x5 CPU Core User’s Manual

instrset.fm.

September 12, 2002 Page 321 of 589

Load Byte and Zero

EA ← (RA|0) + EXTS(D)

0 || MS(EA,1)

An effective address (EA) is formed by adding a displacement to a base address. The displacement is

obtained by sign-extending the 16-bit D field to 32 bits. 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

Registers Altered

lbz RT, D(RA)

0 6 11 16 31

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IBM PPC440X5 Bedienungsanleitung Seite 321