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Altera_Forum
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20 years ago

Nios II EDS v6.0 Released- Download Now

<div class='quotetop'>QUOTE </div> --- Quote Start --- Also included in the 6.0 release is hardware support for floating point operations, implemented as a library of custom instructions.[/b] ...
Altera_Forum's avatar
Altera_Forum
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20 years ago

Hello Pszemol,

For your first question, regarding device resource utilization, see the following document:

using nios ii floating point custom instructions tutorial (http://www.altera.com/literature/tt/tt_floating_point_custom_instructions.pdf)

To your second question: no, the custom instruction library will not replace every emulated software function. The custom instructions implement in hardware the basic floating point math functions: add, substract, multiply, and divide (optional). Any functions that use these basic math routines will indirectly use the custom instruction hardware. For instance, the cosine routine will use the multiplication math hardware that is implemented as a custom instruction.

I hope this is all clear, but feel free to post any other questions.