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Altera_Forum
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15 years ago

Huge reduce in logic usage when megafunction is instantiated

Hi guys, I've been playing around with the floating point megafunctions, and I tried to implement it on hardware. I noticed that when I compiled a floating point adder on its own, it used arou...
Altera_Forum's avatar
Altera_Forum
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15 years ago

Hi rbugalho,

Thanks for your reply. That makes sense but is there any documentation about this that I can read about? Because I don't know much about the fitting and synthesis. Actually what do you mean by the "some output signals wont be used and that some input signals are constant" part? I don't understand how the input signals would be constant and why the output signals won't be used.

Yea I needed around 66 inputs and didn't bother with the IDE header expansion thing, so I just wired them in VHDL since I was just playing around with it.

Best regards,

Chris