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AR# 21341

9.1i XST - "ERROR:Xst:1866 - Expression has no value"

描述

Although the VHDL code is legal, XST does not support the construct below:

library ieee;

use ieee.std_logic_1164.all;

package P is

constant C : integer ;

end P;

package body P is

constant C : integer := 20;

end P;

解决方案

To work around this issue:

library ieee;

use ieee.std_logic_1164.all;

package P is

constant C : integer := 20;

end P;

Xilinx is currently investigating a fix for this issue in XST. There is no fix scheduled at this time.

AR# 21341
日期 12/15/2012
状态 Active
Type 综合文章
的页面