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Altera_Forum
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15 years ago

Devide in VHLD

I want to implement this function : A<= B/x"A", when I compile, the Quartus put a notice: "/" used but didn't declare. When I try with "*" (multiply) or "+" (add), it is ok. I don't know this er...
Altera_Forum's avatar
Altera_Forum
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15 years ago

The Std_logic_arith library does not have a divide function. The numeric_std library has a divide function, so try that instead.

BUT - Divide is very resource intensive, and doing it in 1 clock cycle will cause the FMax to drop. Use the lpm_divide megafunction instead.