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Everything You Want To Know About Math Coprocessor

A detailed document about x86 coprocessors

(by norbert juffa)

A detailed guide on math coprocessors for Intel x86 chipsets. It contains programming examples and clock-cycle timings for each coprocessor instruction, test programs for partial compatibility and accuracy checks, Benchmark programs TRNSFORM and PEAKFLOP
This article is online from 3332 days and has been seen 12646 times




(*** download for full text ***)

The document contains detailed information about mathematical coprocessors for
the Intel 80x86 CPU family.

Contents of this document
-------------------------

1)  What are math coprocessors?
2)  How PC programs use a math coprocessor
3)  Which applications benefit from a math coprocessor
4)  Potential performance gains with a math coprocessor
5)  How various math coprocessors work
6)  Coprocessor emulator software
7)  Installing a math coprocessor
8)  Detailed description and specifications for all available math
    coprocessor chips
9)  Finding out which coprocessor you have (the COMPTEST program)
10) Current coprocessor prices and purchasing advice
11) The coprocessor benchmark programs (performance comparisons of
    available math coprocessors using various CPUs)
12) Clock-cycle timings for each coprocessor instruction
13) Accuracy tests and IEEE-754 conformance for various coprocessors
14) Accuracy of transcendental function calculations for various coprocessors
15) Compatibility tests with Intel's 387DX / the SMDIAG program
16) References (literature)
17) Addresses of manufacturers of math coprocessors
18) Appendix A: Test programs for partial compatibility and accuracy checks
19) Appendix B: Benchmark programs TRNSFORM and PEAKFLOP

There's also some example assembly code which show how mathematical functions 
are implemented.

(*** download for full text ***)



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