Intel 80286 User Manual

PROGRAMMING NUMERIC APPLICATIONS
Table 2·14. Instruction Set Reference Data (Cont'd.)
FPTAN
FPTAN (no operands)
Exceptions:
I, P (operands not checked)
Partial tangent
Execution Clocks
Operands
Operand Word
Code
Coding Example
Typical
Range
Transfers Bytes
(no operands)
450
30·540 0 2 FPTAN
FRNDINT FRNDINT (no operands)
Exceptions:
I, P
Round to integer
Execution Clocks
Operands
Operand Word
Code
Coding Example
Typical
Range
Transfers Bytes
(no operands) 45
16·50 0 2 FRNDINT
FRSTOR FRSTOR source
Exceptions: None
Restore saved state
Execution Clocks
Operands
Operand Word Code
Coding Example
Typical Range
Transfers
Bytes
94-bytes
2
47 2-4 FRSTOR [BP]
FSAVE/FNSAVE
FSAVE/FNSAVE destination
Exceptions: None
Save state
Execution Clocks
Operands
Operand Word
Code
Coding Example
Typical
Range
Transfers Bytes
94-bytes
3
47 2-4 FSAVE [BP]
FSCALE FSCALE (no operands)
Exceptions:
I, 0, U
Scale
Execution Clocks
Operands
Operand Word
Code
Coding Example
Typical
Range
Transfers Bytes
(no operands)
35
32-38
0 2 FSCALE
2-33
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Intel 80286 Specifications

General

Processor Type	Microprocessor
Clock Speed	6 MHz to 25 MHz
Transistor Count	134, 000
Addressable Memory	16 MB
Instruction Set	x86
Architecture	x86
Data Bus Width	16-bit
Address Bus Width	24-bit
Operating Modes	Real mode, Protected mode
Process Technology	1.5 µm
Voltage	5V
Introduced	1982
Package	68-pin PGA