AMCC PPC405 - Page 308

AMCC Proprietary 308
Revision 1.02 - September 10, 2007
PPC405 Processor
stb
Store Byte
Preliminary User’s Manual
stb
Store Byte
EA ← (RA|0) + EXTS(D)
MS(EA, 1)
← (RS)
24:31
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 byte of register RS is stored into the byte at the EA.
Registers Altered
•None
Architecture Note
This instruction is part of the PowerPC User Instruction Set Architecture.
stb RS, D(RA)
38 RS RA D
0 6 11 16 31