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AMS simulation test failed

chofie

I am getting the error below when I try to netlist and run AMS simulation. I am not sure what the problem is. Please help if somebody know how to fix this error.

*Error* index:argument #1 should be a string (type template = "tS") - nil

In this schematic, there are three same pulse signal suppliers, two exactly same verilog blocks, and one OR-gate which is used from ahdlLib.

Logic of two verilog blocks: 

module half_adder(a, ,b, s, c);

input a;

input b;

output s;

output c;

assign s=a^b;

assign c=a&b;

endmodule

config details are showing below. Please take look if it is helpful.

I'd appreciate any suggestions for fixing this error. 

Thank you very much,

Chofield.

Parents
  • Andrew Beckett

    This is suggesting some uncaught low-level error - usually that error would just indicate that something in the code has failed to read a string from somewhere but didn't check that and then failed when it tried to process the string. Hard to diagnose...

    So, some things that may help narrow it down:

    1. Which IC version and simulator version are you using? Help->About in the CIW will tell you this (the simulator version can be found by typing "irun -version" in the terminal window)
    2. Which netlister are you using under Simulation->Netlist and Run Options in ADE? Is it Cellview-based, OSS or Unified Netlister?
    3. Can you type _stacktrace=50 (yes, with an underscore) and try to reproduce the problem? You should get a longer stack trace and if so, please post it here.

    Andrew.

  • chofie
    in reply to Andrew Beckett

    Hi, Mr. Beckett

    Thanks for help firstly, I checked those things you suggested. Please see answer blow. 

    So, some things that may help narrow it down:

    1. Which IC version and simulator version are you using? Help->About in the CIW will tell you this (the simulator version can be found by typing "irun -version" in the terminal window.
      1. The IC Version is IC6.1.7 - 64b.500.18 and the simulator version irun(64) 15.20-s030.
    2. Which netlister are you using under Simulation->Netlist and Run Options in ADE? Is it Cellview-based, OSS or Unified Netlister?
      1. The netlister I used under simulation is AMS Unified Netlister with irun which is recommended.
    3. Can you type _stacktrace=50 (yes, with an underscore) and try to reproduce the problem? You should get a longer stack trace and if so, please post it here.     

    Best Regards,

    Ciao.

Reply
  • chofie
    in reply to Andrew Beckett

    Hi, Mr. Beckett

    Thanks for help firstly, I checked those things you suggested. Please see answer blow. 

    So, some things that may help narrow it down:

    1. Which IC version and simulator version are you using? Help->About in the CIW will tell you this (the simulator version can be found by typing "irun -version" in the terminal window.
      1. The IC Version is IC6.1.7 - 64b.500.18 and the simulator version irun(64) 15.20-s030.
    2. Which netlister are you using under Simulation->Netlist and Run Options in ADE? Is it Cellview-based, OSS or Unified Netlister?
      1. The netlister I used under simulation is AMS Unified Netlister with irun which is recommended.
    3. Can you type _stacktrace=50 (yes, with an underscore) and try to reproduce the problem? You should get a longer stack trace and if so, please post it here.     

    Best Regards,

    Ciao.

Children
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