Inc. Typewriter User Manual

134 www.xilinx.com MicroBlaze Processor Reference Guide
1-800-255-7778 UG081 (v6.0) June 1, 2006
Chapter 4: MicroBlaze Instruction Set Architecture
R
sbi
Store Byte Immediate
Description
Storesthe contentsofthe least significantbyte of registerrD,into the memory locationthat
results from adding the contents of register rA and the value IMM, sign-extended to 32
bits.
Pseudocode
Addr ← (rA) + sext(IMM)
Mem(Addr)
← (rD)[24:31]
Registers Altered
• None
Latency
1 cycle
Note
By default, Type BInstructionswill take the16-bit IMM fieldvalue and sign extendit to 32
bits to use as the immediate operand. This behavior can be overridden by preceding the
Type B instruction with an imm instruction. See the imm instruction for details on using
32-bit immediate values.
sbi rD, rA, IMM
1 1 1 1 0 0 rD rA IMM
0 6 11 16 31