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Registered: ‎11-24-2020

Undefined C timing system task and reg

Hi, I hope you are well.

I am trying to deploy a custom processor and execute simple hello world programs/blink a led on it. The processor can be found here: bluespec/Piccolo (

First, I am trying to run a behavioral simulation (Top module: mkTop_HW_Side.v). However, there are two problems:

1. XSIM 43-4287: Line 261. Undefined system task '$imported_c_end_timing'. 

2. Some defined variables considered as undefined (v__h941, TASK_testplusargs___d11, TASK_testplusargs___d12, TASK_testplusargs___d15, tohost_addr__h571).

I could not find any documentation/tutorial that discusses that. Does anyone know the reason for that or could point to documentation that can help?

I really appreciate any help you can provide.

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