Assembly: 

BYTEREVH rt, rs

Assembly alias, not available in NMS

Byte Reverse in Halfs

Purpose:

Byte Reverse in Halfs. Reverse bytes in each halfword of 32-bit value in register $rs, placingthe result in register $rt.

Availability:

Assembly alias, not available in NMS

Expansion: 

ROTX rt, rs, 8, 24