# [SOLVED]Netlist Simulation NCLaunch Error ncelab: *E,MULAXX

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#### Leonid_Nidekker

##### Newbie level 3
Hi all!

I have some problem with my project during simulation in NCLaunch.
When I perform step 'elaboration', following error is appear.

Code Verilog - [expand]1
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always_ff @(negedge work)
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ncelab: *E,MULAXX (../hdl/tb.sv,222|8): Multiple drivers to always_ff output variable SVIP_D1 detected.

This error likely associated with some construction in my testbanch.
Can anyone help me with this error.

Thanks.

Last edited by a moderator:

##### Super Moderator
Staff member
Re: [moved] Netlist Simulation NCLaunch Error ncelab: *E,MULAXX

As you've provided none of the code the best I can do to help is to tell you to look for all locations where SVIP_D1 is assigned, it must be done in more than one place.

Leonid_Nidekker

Points: 2