Intel 80287 User Manual

PROGRAMMING NUMERIC APPLICATIONS
Table 2-14. Instruction Set Reference Data (Cont'd.)
FSETPM FSETPM (no operands)
Exceptions: None
Set protected mode
Execution Clocks
Operands
Operand Word Code
Coding Example
Typical Range
Transfers
Bytes
(no operands) 2-8
0 2
FSETPM
FSQRT FSQRT (no operands)
Exceptions:
I, 0, P
Square root
Execution Clocks
Operands
Operand Word
Code
Coding Example
Typical Range
Transfers Bytes
(no operands) 183
180-186
0
2 FSQRT
FST
FST destination
Exceptions:
1,0, U, P
Store real
Execution Clocks
Operands
Operand Word
Code
Transfers
Bytes
Coding Example
Typical Range
ST(i)
18
15·22 0
2 FST ST(3)
short-real
87
84-90 2 2-4 FST CORRELATION [01]
long-real 100 96-104 4 2-4
FST MEAN_READING
FSTCW/ FSTCW destination
Exceptions: None
FNSTCW Store control word
Execution Clocks
Operands
Operand Word Code
Coding Example
Typical Range
Transfers
Bytes
2-bytes
15 12-18 1 2-4
FSTCW SAVE_CONTROL
FSTENV/ FSTENV destination
Exceptions: None
FNSTENV Store environment
Execution Clocks
Operands
Operand Word
Code
Coding Example
Typical Range
Transfers
Bytes
14-bytes 45 40-50 7
2-4 FSTENV [SP]
2-34
pcjs.org

Intel 80287 Specifications

General

Brand	Intel
Model	80287
Category	Computer Hardware
Language	English