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AR# 68047

Vivado HLS 2016.x - Co-simulation is terminated due to invalid command "enable_beta_device" in version init.tcl


When doing an HLS C/RTL Co-Simulation, I receive the following error when XSim is invoked by HLS stating that "enable_beta_devices" is an unknown command. The operation then dies.

****** xsim v2016.2 (64-bit)
  **** SW Build 1577090 on Thu Jun  2 16:32:35 MDT 2016
  **** IP Build 1577682 on Fri Jun  3 12:00:54 MDT 2016
    ** Copyright 1986-2016 Xilinx, Inc. All Rights Reserved.

Sourcing tcl script '/eda2/xilinx/vivado2016.2/Vivado/2016.2/scripts/init.tcl'
invalid command name "enable_beta_device"
    while executing
"enable_beta_device xczu9eg*"
    (file "/eda2/xilinx/vivado2016.2/Vivado/2016.2/scripts/init.tcl" line 1)
INFO: [Common 17-206] Exiting xsim at Sun Oct  9 17:26:08 2016...
CRITICAL WARNING: [COSIM 212-303] Aborting co-simulation: RTL simulation failed.  
CRITICAL WARNING: [COSIM 212-344] Rtl simulation failed.
CRITICAL WARNING: [COSIM 212-4] *** C/RTL co-simulation finished: FAIL ***

If I comment out the "enable_beta_device" command from init.tcl, HLS Co-Simulation finishes successfully.


This issue has been reported by some users.

It occurs because the stand-alone XSim shell command is not supposed to read Vivado's init.tcl, and stand-alone XSim does not load all of the modules that Vivado does.

In versions prior to 2016.3, a work-around is to put "load_features core" before "enable_beta_device" in theinit.tcl file.

For 2016.3, a work-around is to put "catch {enable_beta_device}" in the init.tcl file.

This will allow you to get past the error.

This issue is scheduled to be fixed in a future release of Vivado.

AR# 68047
Date Created 10/09/2016
Last Updated 11/11/2016
Status Active
Type General Article
  • Vivado Design Suite