AMCC PPC405 - Page 321

AMCC Proprietary 321
Revision 1.02 - September 10, 2007
PPC405 Processor
stw
Store Word
Preliminary User’s Manual
stw
Store Wor d
EA ← (RA|0) + EXTS(D)
MS(EA, 4)
← (RS)
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 contents of register RS are stored at the EA.
Registers Altered
•None
Architecture Note
This instruction is part of the PowerPC User Instruction Set Architecture.
stw RS, D(RA)
36 RS RA D
0 6 11 16 31