Xilinx MicroBlaze Reference Manual page 283

sext8 Sign Extend Byte
rD, rA
sext8
1 0 0 1 0 0
0
6
Description
This instruction sign-extends a byte (8 bits) into a word (32 bits). Bit 24 in rA will be copied into bits
0-23 of rD. Bits 24-31 in rA will be copied into bits 24-31 of rD.
Pseudocode
←
(rD)[0:23]
(rD)[24:31]
Registers Altered
• rD
Latency
• 1 cycle
MicroBlaze Processor Reference Guide
UG984 (v2018.2) June 21, 2018
rD rA
11
(rA)[24]
←
(rA)[24:31]
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Chapter 5: MicroBlaze Instruction Set Architecture
0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0
16 31
284
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