IBM AT 5170 Technical Reference page 395

FYL2XP1
=
ST(l) x Log
2
[ST(O)
+
1]
I
escape 001
I
11111001
FINIT
=
Initialize NPX
I
escape 011
I
11100011
FSETPM
=
Enter Protected Mode
I
escape 011
I
11100100
FSTSWAX
=
Store Control Word
I
escape 111
I
11100000
FLDCW
=
Load Control Word
I
escape 001
I
mod 101
rim
FSTCW
=
Store Control Word
I
escape 001
I
mod 111
rim
FSTSW
=
Store Status Word
I
escape 101
I
mod 101
rim
FCLEX
=
Clear Exceptions
I
escape 011
I
11100010
FSTENV
=
Store Environment
I
escape 001
I
mod 110
rim
FLDENV
=
Load Environment
escape 001 mod 100
rim
Instruction Set 6-27