Problem encountered during simulating with spectreVerilog

The error message is:

******************************
Message! Stable DC solution not found within 0 iterations. Using last
calculated state to start transient analysis. See Artist Mixed-signal
Simulation Help for more info on obtaining an initial solution.
[Mixed_Sig]
"IE.verimix", 5: $vmx_initialize("spectre", dc_mode_flag);

Error! List of message(s) that are acceptable
now:

$do_dc

$done_dc

$switch_to_interactive
Invalid message introducer '$send_events',
unrecognized. [Mixed_Sig-VMXIMI]
"IE.verimix", 5: ...
Error! Invalid message introducer '150438448',
expect
DONE_DC message. [Mixed_Sig-
VMXIMI]
"IE.verimix", 5: $vmx_initialize("spectre",
dc_mode_flag);
******************************

Does anyone know what it means? How to overcome this problem?
Thanks!!

 

[Andrew Beckett]

On 24 Apr 2007 23:08:14 -0700, charles@alfaplus.com.tw wrote:

The error message is:

******************************
Message! Stable DC solution not found within 0 iterations. Using last
calculated state to start transient analysis. See Artist Mixed-signal
Simulation Help for more info on obtaining an initial solution.
[Mixed_Sig]
"IE.verimix", 5: $vmx_initialize("spectre", dc_mode_flag);

Error! List of message(s) that are acceptable
now:

$do_dc

$done_dc

$switch_to_interactive
Invalid message introducer '$send_events',
unrecognized. [Mixed_Sig-VMXIMI]
"IE.verimix", 5: ...
Error! Invalid message introducer '150438448',
expect
DONE_DC message. [Mixed_Sig-
VMXIMI]
"IE.verimix", 5: $vmx_initialize("spectre",
dc_mode_flag);
******************************

Does anyone know what it means? How to overcome this problem?
Thanks!!

I had a quick explore, and I think this is just a badly worded error message (in
an obsolete tool - use AMS Designer rather than spectreVerilog if you can).

I think the fundamental problem is that you failed to reach DC convergence - if
you solved that, I think the subsequent error wouldn't occr.

Regards,

Andrew.
--
Andrew Beckett
Principal European Technology Leader
Cadence Design Systems, UK.