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Altera_Forum's avatar
Altera_Forum
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13 years ago

LPM_Divide Megafunction Timing Issues

Hey, I'm working with an Arria II GX. I've been having timing issues with the lpm_divide megafunction. I have created a divider using the MegaWizard Plug-In Manager that has a Numerator of 64...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Avoid division, it is always slow :-)

If you are dividing by constants, do a 'multiply by reciprocal' instead.

I also think it is possible to use an approximate reciprocal, a multiply, and then a few Newton-Raphson type iterations.