80287 Coprocessor Instruction Set; Data Transfer - IBM AT 5170 Technical Reference

80287 Coprocessor Instruction Set
The following is an instruction set summary for the 80287
coprocessor. In the following, the bit pattern for escape is 11011.
Data Transfer
FLD
=
Load
Integer/Real Memory to ST(O)
escape MF 1
I
mod 000 rim
Long Integer Memory to ST(O)
escape 111
I
mod 101 rim
Temporary Real Memory to ST(O)
escape 011
I
mod 101 rim
BCD Memory to ST(O)
escape 111
I
mod 100 rim
ST(i) to ST(O)
escape 001 11000ST(i)
FST
=
Store
ST(O) to Integer/Real Memory
escape MF 1
I
mod 010 rim
ST(O) to ST(i)
escape 101 11010 ST( i)
FSTP
=
Store and Pop
ST(O) to Integer/Real Memory
escape MF 1 modOllr/m
6-22 Instruction Set