Intel 80287, 80286 manual FST ST3, FST Correlation, FST Meanreading, Fstcw Savecontrol, Fstenv SP

FSETPM

PROGRAMMING NUMERIC APPLICATIONS

Table 2-14. Instruction Set Reference Data (Cont'd.)

FSETPM (no operands)

Set protected mode

Exceptions: None

Operands

(no operands)

FSQRT

Operands

(no operands)

FST

Operands

ST(i) short-real long-real

FSTCW/

FNSTCW

Operands

2-bytes

FSTENV/

FNSTENV

Operands

14-bytes

Execution Clocks		Operand Word	Code
				Coding Example
Typical	Range	Transfers	Bytes
	2-8	0	2	FSETPM
FSQRT (no operands)			Exceptions: I, 0, P
Square root
Execution Clocks		Operand Word	Code
				Coding Example
Typical	Range	Transfers	Bytes
183	180-186	0	2	FSQRT
FST destination			Exceptions: 1,0, U, P
Store real
Execution Clocks		Operand Word	Code
				Coding Example
Typical	Range	Transfers	Bytes
18	15·22	0	2	FST ST(3)
87	84-90	2	2-4	FST CORRELATION [01]
100	96-104	4	2-4	FST MEAN_READING
FSTCW destination			Exceptions: None
Store control word
Execution Clocks		Operand Word	Code
				Coding Example
Typical	Range	Transfers	Bytes
15	12-18	1	2-4	FSTCW SAVE_CONTROL
FSTENV destination			Exceptions: None
Store environment
Execution Clocks		Operand Word	Code
				Coding Example
Typical	Range	Transfers	Bytes
45	40-50	7	2-4	FSTENV [SP]

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