smsw

Store Machine Status Word

SMSW r/m16

Stores Machine Status Word.

Details

The Store Machine Status Word instruction stores Machine Status Word.

Pseudocode Operation

// Stores Machine Status Word

Example

SMSW bx

Encoding

Binary Layout
0F
+0
01
+1
ModRM
+2
 
Format System
Opcode 0F 01 /4
Extension System

Operands

  • dest
    16-bit register or memory