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Altera_Forum
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9 years ago

Does Quartus II support use of fixed point arithmatic packages in VHDL?

The question is result of what I have read here from Sep 2011: https://www.altera.com/support/support-resources/knowledge-base/solutions/rd12082010_811.html Is this still true for Quartus in Nov...
Altera_Forum's avatar
Altera_Forum
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9 years ago

The fixed_pkg was added to VHDL 2008. David Bishop created a version that was compatible with VHDL '93 and has most of the features of the 2008 version, but is not part of the VHDL standard so users have to "use it at their own risk". Many people have used it succesfully however, including me. Quartus has only just started supporting the official 2008 version from Version 15.1 pro.

Nothing is different in the underlying hardware. There is nothing you can do with the fixed_pkg you cannot do with numeric_std. Its just a more convenient way of coding.