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| 型號(hào)： | military i387 |
| 廠商： | Intel Corp. |
| 英文描述： | Military i387 SX Math Coprocessor(軍用I387 SX數(shù)學(xué)協(xié)處理器) |
| 中文描述： | 軍事i387山西數(shù)學(xué)協(xié)處理器（軍用I387山西數(shù)學(xué)協(xié)處理器） |
| 文件頁(yè)數(shù)： | 1/41頁(yè) |
| 文件大小： | 524K |
| 代理商： | MILITARY I387 |
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January 1994
Order Number: 271166-002
MILITARY i387
TM
SX
MATH COPROCESSOR
Military
Y
Interfaces with Military i386
TM
SX
Microprocessor
Y
Expands Military i386 SX CPU Data
Types to Include 32-, 64-, 80-Bit
Floating Point, 32-, 64-Bit Integers and
18-Digit BCD Operands
Y
High Performance 80-Bit Internal
Architecture
Y
Two to Three Times M8087/M80287
Performance at Equivalent Clock Speed
Y
Implements ANSI/IEEE Standard 754-
1985 for Binary Floating-Point
Arithmetic
Y
Fully compatible with the Military i387
TM
Math Coprocessor. Implements all
Military i387 NPX architectural
enhancements over M8087 and M80287.
Y
Upward Object-Code Compatible from
M8087 and M80287
Y
Directly Extends Military i386 SX CPU
Instruction Set to Trigonometric,
Logarithmic, Exponential, and
Arithmetic Instructions for All Data
Types
Y
Full-Range Transcendental Operations
for SINE, COSINE, TANGENT,
ARCTANGENT and LOGARITHM
Y
Operates Independently of Real,
Protected, and Virtual-8086 Modes of
the Military i386 SX Microprocessor
Y
Eight 80-Bit Numeric Registers, Usable
as Individually Addressable General
Registers or as a Register Stack
Y
Available in a 68-Lead PGA Package
(see Packaging Specs: Order
Y
231369)
Y
Available in Three Product Grades:
D MIL-STD-883,
b
55
§
C to
a
125
§
C (T
C
)
D Military Temperature Only,
b
55
§
C to
a
125
§
C (T
C
)
D Extended Temperature,
b
40
§
C to
a
110
§
C (T
C
)
The Intel Military i387 SX Math Coprocessor is an extension to the Intel Military i386 microprocessor architec-
ture. The combination of the Military i387 SX with the i386 SX Microprocessor dramatically increases the
processing speed of computer application software which utilizes mathematical operations. This makes an
ideal computer workstation platform for applications such as financial modeling and spreadsheets, CAD/CAM,
or graphics.
The Military i387 SX Math Coprocessor adds over seventy mnemonics to the Military i386 SX Microprocessor
instruction set. Specific Military i387 SX math operations include logarithmic, arithmetic, exponential, and
trigonometric functions. The Military i387 SX supports integer, extended integer, floating point and BCD data
formats, and fully conforms to the ANSI/IEEE floating point standard.
The Military i387 SX Math Coprocessor is object code compatible with the Military i387 DX and upward object
code compatible from the M80287 and M8087 Math Coprocessors. The Military i387 SX is manufactured with
Intel’s CHMOS III technology and packaged in a 68-lead PGA package. A low power consumption option
allows use in portable applications.
NOTE:
References to devices within this document refer to the Military versions of those devices.
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