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Intel Corporation
Intel Corporation


80C187

80-BIT MATH COPROCESSOR



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80C187 pdf
80C187
80-BIT MATH COPROCESSOR
Y High Performance 80-Bit Internal
Architecture
Y Implements ANSI IEEE Standard 754-
1985 for Binary Floating-Point
Arithmetic
Y Upward Object-Code Compatible from
8087
Y Fully Compatible with 387DX and 387SX
Math Coprocessors Implements all 387
Architectural Enhancements over 8087
Y Directly Interfaces with 80C186 CPU
Y 80C186 80C187 Provide a Software
Binary Compatible Upgrade from
80186 82188 8087 Systems
Y Expands 80C186’s Data Types to
Include 32- 64- 80-Bit Floating-Point
32- 64-Bit Integers and 18-Digit BCD
Operands
Y Directly Extends 80C186’s 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 Built-In Exception Handling
Y Eight 80-Bit Numeric Registers Usable
as Individually Addressable General
Registers or as a Register Stack
Y Available in 40-Pin CERDIP and 44-Pin
PLCC Package
(See Packaging Outlines and Dimensions Order 231369)
The Intel 80C187 is a high-performance math coprocessor that extends the architecture of the 80C186 with
floating-point extended integer and BCD data types A computing system that includes the 80C187 fully
conforms to the IEEE Floating-Point Standard The 80C187 adds over seventy mnemonics to the instruction
set of the 80C186 including support for arithmetic logarithmic exponential and trigonometric mathematical
operations The 80C187 is implemented with 1 5 micron high-speed CHMOS III technology and packaged in
both a 40-pin CERDIP and a 44-pin PLCC package The 80C187 is upward object-code compatible from the
8087 math coprocessor and will execute code written for the 80387DX and 80387SX math coprocessors
Other brands and names are the property of their respective owners
Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or
copyright for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products Intel retains the right to make
changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata
COPYRIGHT INTEL CORPORATION 1995
November 1992
Order Number 270640-004



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80C187 pdf
80C187
Figure 1 80C187 Block Diagram
2



Part Number 80C187
Description 80-BIT MATH COPROCESSOR
Maker Intel Corporation - Intel Corporation
Total Page 30 Pages
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