3-200
INSTRUCTION SET REFERENCE
FILDLoad Integer
Description
This instruction converts the signed-integer source operand into extended-real format and
pushes the value onto the FPU register stack. The source operand can be a word, short, or long
integer value. It is loaded without rounding errors. The sign of the source operand is preserved.
Operation
TOP
<
TOP
?
1;
ST(0)
<
ExtendedReal(SRC);
FPU Flags Affected
C1
Set to 1 if stack overflow occurred; cleared to 0 otherwise.
C0, C2, C3
Undefined.
Floating-Point Exceptions
#IS
Stack overflow occurred.
Protected Mode Exceptions
#GP(0)
If a memory operand effective address is outside the CS, DS, ES, FS, or
GS segment limit.
If the DS, ES, FS, or GS register contains a null segment selector.
#SS(0)
If a memory operand effective address is outside the SS segment limit.
#NM
EM or TS in CR0 is set.
#PF(fault-code)If a page fault occurs.
#AC(0)
If alignment checking is enabled and an unaligned memory reference is
made while the current privilege level is 3.
Opcode
Instruction
Description
DF /0
FILD m16int
Push m16int onto the FPU register stack.
DB /0
FILD m32int
Push m32int onto the FPU register stack.
DF /5
FILD m64int
Push m64int onto the FPU register stack.
