The Intel C80287XL is a floating-point math coprocessor designed to work with Intel's 80286 microprocessor. It enhances the 80286's ability to perform complex mathematical calculations, significantly improving the performance of applications that rely heavily on floating-point operations. The 'XL' designation likely refers to a specific speed grade or feature enhancement of the coprocessor.

Applications:

• CAD/CAM software
• Scientific and engineering applications
• Spreadsheet programs
• Statistical analysis software
• Graphics processing

Features:

• Compliant with IEEE 754 floating-point standard
• Supports 80-bit extended precision
• Handles trigonometric, logarithmic, and exponential functions
• Reduces CPU load for floating-point calculations
• Improved performance for math-intensive applications

Benefits:

• Faster execution of floating-point operations
• Increased accuracy in calculations
• Enhanced system responsiveness
• Reduced development time for scientific and engineering software
• Improved user experience for math-intensive applications

Additional Details:

The C80287XL operates in conjunction with the 80286 processor, handling floating-point instructions that the 80286 is not designed to execute efficiently. It supports a wide range of floating-point data types, including single-precision, double-precision, and extended-precision formats. The coprocessor communicates with the 80286 via a dedicated interface, allowing the two processors to work in parallel and improving overall system performance. The C80287XL is packaged in a 40-pin DIP (Dual In-line Package). Its clock speed is synchronized with the 80286, typically operating at the same frequency. The use of the C80287XL significantly improves the performance of applications that rely heavily on floating-point calculations, making it an essential component for many scientific, engineering, and financial applications during the 1980s and early 1990s.