Intel® Core™ Ultra 200S, Intel® Core™ Ultra 200S Plus ,Intel® Core™ Ultra 200HX and 200HX Plus Series Processors

Datasheet, Volume 1 of 2

ID Date Version Classification
832586 03/17/2026 Public
Document Table of Contents
LAM

User Mode Wait Instructions

The UMONITOR and UMWAIT are user mode (Ring 3) instructions similar to the supervisor mode (Ring 0) MONITOR/MWAIT instructions without the C-state management capability.

TPAUSE is an enhanced PAUSE instruction.

The mnemonics for the three new instructions are:

  • UMONITOR: operates just like MONITOR but allowed in all rings.
  • UMWAIT: allowed in all rings, and no specification of target C-state.
  • TPAUSE: similar to PAUSE but with a software-specified delay. Commonly used in spin loops.