pcmpeqb

Packed Compare Equal Byte (MMX)

PCMPEQB mm, mm/m64

Compares bytes for equality (MMX).

Details

The Packed Compare Equal Byte (MMX) instruction compares bytes for equality (MMX).

Pseudocode Operation

// Compares bytes for equality (MMX)

Example

PCMPEQB mm, mm/m64

Encoding

Binary Layout
0F
+0
74
+1
 
Format MMX
Opcode 0F 74
Extension MMX

Operands

  • dest
    64-bit MMX register
  • src
    64-bit MMX register or Memory operand