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Altera_Forum
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12 years ago

How to manually place a component with Quartus II

How do you manually place a component on a FPGA with Quartus ? i.e. I have the coordinates where I want to put the component on the FPGA, how do I use them with my VHDL code to say to Quartus 'put th...
Altera_Forum's avatar
Altera_Forum
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12 years ago

Instead of assigning it to a single LAB, create a region that contains enough LABs to fil the component, and then add the component to the region.

There are other settings that allow the fitter to "overspill" the region if there isnt enough logic available (but this wont happen if there are not enough RAMs or Multipliers - you just get an error) or just force it to use only the logic in the region. Its much easier to modify regions from the GUI than from the .QSF (however, the QSF gets a bit messy as it keeps moving your assignments arround, and changes are appended at the bottom).