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Altera_Forum's avatar
Altera_Forum
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14 years ago

Prevent Inferrance of Megafunctions

Hello, I have a large shift-register that is being optimized by the synthesizer into a megafunction equivalent. The problem is, I need this register to stay a register (DFFs). Is there a ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

yes.

go assignments -> settings -> analysis and synthesis settings -> more settings

There is a setting called "auto shift register placements". Change this to "off".

be wary though - these are global settings. I think these settings can be assigned to individual entites via assignments.