ZEXT.H

Zero Extend Halfword

ZEXT.H rd, rs1

Zero-extends the lowest halfword (16 bits) to XLEN bits.

Encoding

Binary Layout

000010000000

31:20

rs1

19:15

100

14:12

rd

11:7

0111011

6:0

 

Format I-Type

Opcode 0x0800403B

Extension Zbb

Operands

• rd
  Destination register (integer)
• rs1
  Source

Example

ZEXT.H x10, x11

// Zero extend 16-bit value.

Related

More in Zbb

Reference

View in RISC-V Unprivileged ISA Specification ↗ RISC-V ISA Manual

Description

ZEXT.H zero-extends the least-significant halfword of rs1 to XLEN bits, writing to rd.

Operation

R[rd] = zext(R[rs1][15:0]);