Internal Error: Sub-system: TDC, File: /quartus/tsm/tdc/tdc_accessories_analysis.cpp,

Hi All:

We are getting the following error when targeting a Cyclone III device:

Internal Error: Sub-system: TDC, File: /quartus/tsm/tdc/tdc_accessories_analysis.cpp, Line: 1571

m_edge_domain_data[iedge].m_relaxed_domain_slack_ratio < JUST_BELOW_HUGE_FLOAT

Stack Trace:

0x59E2 : _Dinkum_std::hash_compare<TDC_PATH_TIMING *,_Dinkum_std::less<TDC_PATH_TIMING *> >::operator() + 0x3B62 (TSM_TDC)

End-trace

Quartus II Version 7.2 Build 203 02/05/2008 SJ Full Version

Service Pack Installed: 2

Or

Internal Error: Sub-system: FITCC, File: /quartus/fitter/fitcc/fitcc_tdc_utility.cpp, Line: 1286

edge_slack_ratio >= 0.0

Stack Trace:

0x76027 : FITCC_TDC_UTILITY::get_slack_ratio_of_connection + 0x177 (FITTER_FITCC)

0x1324C8 : FSYN_EXPERT::tune_stability_threshold + 0x44F78 (fitter_fsyn)

End-trace

Quartus II Version 7.2 Build 175 11/20/2007 SJ Full Version

Service Pack Installed: 1

However the same code works under Stratix II and worked under Cyclone III until resently (minor code changes).

We have a service request in, but has anyone else seen these issues.. (As you can see we are on 7.2 either SP1 or SP2.

Pete