The M80C287 by Intel is a 80-BIT CHMOS III NUMERIC PROCESSOR EXTENSION. Below is the official datasheet preview.
| Part number | M80C287 |
|---|---|
| Manufacturer | Intel |
| File Size | 372.04 KB |
| Description | 80-BIT CHMOS III NUMERIC PROCESSOR EXTENSION |
| Datasheet |
 M80C287_IntelCorporation.pdf
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The M80C287 Numeric Processor Extension (NPX) provides arithmetic instructions for a variety of numeric data types It also executes numerous built-in transcendental functions (e g tangent sine cosine and log functions) The M80C287 effectively extends the register and instruction set of the CPU for existing data types and adds several new data types as well Figure 2 shows the additional registers visible to programs in a system that includes the M80C287 Essentially the M80C287 can be treated as a
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