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Altera_Forum
Honored Contributor I
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Migrating Xilinx Project to Arria 10

I am currently moving a large virtex 6 based project over to an Arria 10 board, which includes Xilinx specific IO module instances such as IBUFG, OBUFDS, IOBUF, and ODDR, and am new to Quartus environment. Is there an Altera / Quartus Equivalent of these IO cells and how do I instantiate them ??

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Altera_Forum
Honored Contributor I
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Most Altera(Intel) users don't use these primitives. There is an IO standard assignment in the assignment editor for IO types, and for globals they let the fitter auto-promote them, and then use Global assignment if anything needs to be modified. 

If you really do want replacements, they are not "primitives" per se, but IP generated in the IP Catalog(Alt+7). Altclkctrl is for globals and I believe altiobuf for IO buffers.
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