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VHDL Wait Statement error at <location>: condition clause with UNTIL keyword cannot contain contain 'EVENT predefined attribute


CAUSE: In a Wait Statement at the specified location in a VHDL Design File (.vhd), you used the 'EVENT predefined attribute in a condition clause that has the UNTIL keyword. For example, you may have used clk'EVENT in the condition clause. However, a condition clause cannot contain the 'EVENT predefined attribute.
ACTION: Make sure the condition clause with the UNTIL keyword in the Wait Statement does not contain the 'EVENT predefined attribute.

See also:

Sections 8.1 and 14.1 of the IEEE Std 1076-1993 IEEE Standard VHDL Language Reference Manual

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