VLM ERROR VLM_0037: "Package "ieee.numeric_std_unsigned" is not accessible in -93/-2002 mode."


The numeric_std_unsigned package was added in the VHDL 2008 standard. In order to use functions from this package, your code should comply with the VHDL 2008 syntax, and should be compiledw ith the -2008 switch.

To change the standard in the GUI

  • Right-click the design in the Design Manager

  • Select Properties... from the drop-down menu

  • Go to Compilation | VHDL | General

  • In the Standard version drop-down menu, select 1076-2008

  • Click Apply and <OK>

To change the standard in a script

Please use the -2008 switch with the acom/vcom command. For example:

acom -2008 -dbg -lib work myfile.vhd
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