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Altera_Forum
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14 years ago

What is the difference between direct arithmetic computation and using MegaWizard blo

When I try to do addition, reduction, multiplication, previously I will use plug ins in Quartus II like LPM_ADD_SUB. Then I will program use this addtion block to do addtion.The program will be: ...
Altera_Forum's avatar
Altera_Forum
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14 years ago

Pipelinening (with more than an input and output register) can be easier specified with MegaFunctions. Unregistered arithmetic, as shown in this post should give identical results, because arithmetic inferred from HDL uses the same lpm_add and lpm_mul blocks, as you can see from the RTL netlist. Of course there may be cases, where the implementation looks slightly different.