Xilinx MicroBlaze - Page 283

MicroBlaze Processor Reference Guide 284
UG984 (v2018.2) June 21, 2018 www.xilinx.com
Chapter 5: MicroBlaze Instruction Set Architecture
sext8
Sign Extend Byte
sext8
rD, rA
1 0 0 1 0 0 rD rA 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0
0 6 11 16
31
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] ← (rA)[24]
(rD)[24:31]
← (rA)[24:31]
Registers Altered
•rD
Latency
• 1 cycle
Send Feedback