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Honored Contributor

14 years ago

Forcing Quartus to use Cyclone IV embedded multipliers

I really need to free up some LEs so it would really help if my LPM_MULT blocks could be implemented in the embedded multiplier blocks. How do I do that?

I've looked at the documentation and in Table 25 it suggests that setting DEDICATED_MULTIPLIER_CIRCUITRY to YES is the way forward, but where do I do that?

14 Replies

Altera_Forum
Honored Contributor
14 years ago
Editing the vhdl to add the hint didn't make any difference at all :(
Altera_Forum
Honored Contributor
14 years ago
Which version of Quartus are you using?
Altera_Forum
Honored Contributor
14 years ago
11.1 Web edition
Altera_Forum
Honored Contributor
13 years ago
I've learnt that Quartus does something different when you use an lpm_mult to square a number. It works for me when multipying by a constant!

Forum Discussion

Forcing Quartus to use Cyclone IV embedded multipliers

14 Replies

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