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Altera_Forum
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14 years ago

Error (10430): VHDL Primary Unit Declaration:already exists in library "work"

Hi all, in QuartusII web edition, I tried to compile a simple VHDL project and the result is this error message: error (10430): vhdl primary unit declaration error at clk_div.vhd(56): primar...
Altera_Forum's avatar
Altera_Forum
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14 years ago

You dont have to create one. Without it, it will just tell you the max speed that each clock could theoretically run at. If you specify clock constraints, it can make the fitter work harder to actually acheive timing.