Quartus

Verilog HDL error at <location>: illegal operation on real number


CAUSE: In a Verilog Design File (.v) at the specified location, you used a bit-wise operation in a real number expression; however, real number expressions do not support bit-wise operations.
ACTION: Edit the design to use an integer or reg variable type if you require bit-wise operations.

See also:

Section 4.1 of the IEEE Std. 1364-2001 IEEE Standard Verilog Hardware Description Language manual

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