FILD            Load integer                         Exceptions: I
                                                     C3 C2 C1 C0: ? ? * ?
FILD source

        Logic   push source into ST

    FILD converts a signed word, short, or long integer to extended real
    format and pushes it onto the FPU stack.


    Note
    ST(7) must be empty; otherwise, the CPU receives an invalid
    operation exception.

    The source operand cannot be one of the 80x86 general registers.


    Opcode      Format
    DF /0       FILD m16
    DB /0       FILD m32
    DF /5       FILD m64


    Timing
    Operand       8087         287        387      486     Pentium
    m16         (46-54)+EA    46-54      61-65    13-16    3/1     NP
    m32         (52-60)+EA    52-60      45-52     9-12    3/1     NP
    m64         (60-68)+EA    60-68      56-67    10-18    3/1     NP