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9-160 PPC405 Core User’s Manual
sth
Store Halfword
9.Instruction Setsth
Store Halfword
EA (RA|0) + EXTS(D)
MS(EA, 2)
(RS)
16:31
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 when the RA field is 0
and is the contents of register RA otherwise.
The least significant halfword of register RS is stored into the halfword at the EA in main storage.
Registers Altered
None
Architecture Note
This instruction is part of the PowerPC User Instruction Set Architecture.
sth RS, D(RA)
44 RS RA D
0 6 11 16 31