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Altera_Forum's avatar
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

writing HDL is obviously more portable between FPGA vendors, ASICs, and doesn't require Altera specific simulation libraries

i have seen better fmax numbers using LPM functions rather than HDL - i think the LPMs are implemented at an atom level rather than being synthesized, so they are or can be pretty well optimized