ffree

Free Floating-Point Register

FFREE ST(i)

Sets the tag for ST(i) to empty.

Details

The Free Floating-Point Register instruction sets the tag for ST(i) to empty.

Pseudocode Operation

// Sets the tag for ST(i) to empty

Example

FFREE st(1)

Encoding

Binary Layout
DD
+0
 
Format Legacy
Opcode DD C0+i
Extension x87 FPU

Operands

  • dest
    Register