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VITAL compliance warnings
The following LRM errors are printed as warnings (if they were considered errors they would prevent VITAL level 1 acceleration); they do not affect how the architecture behaves.
- Starting index constraint to DataIn and PreviousDataIn parameters to VITALStateTable do not match (1076.4 section 6.4.3.2.2)
- Size of PreviousDataIn parameter is larger than the size of the DataIn parameter to VITALStateTable (1076.4 section 6.4.3.2.2)
- Signal q_w is read by the VITAL process but is NOT in the sensitivity list (1076.4 section 6.4.3)
The first two warnings are minor cases where the body of the VITAL 3.0 LRM is slightly stricter than the package portion of the LRM. Since either interpretation will provide the same simulation results, we chose to make these two cases just warnings.
The last warning is a relaxation of the restriction on reading an internal signal that is not in the sensitivity list. This is relaxed only for the CheckEnabled parameters of the timing checks, and only if it is not read elsewhere.
You can control the visibility of VITAL compliance-check warnings in your vcom transcript. They can be suppressed by using the vcom -nowarn switch as in
vcom nowarn 6. The 6 comes from the warning level printed as part of the warning, i.e., WARNING[6]. You can also add the following line to your modelsim.ini file in the [vcom] VHDL compiler control variables section.[vcom] Show_VitalChecksWarnings = 0
 Model Technology Incorporated Voice: (503) 641-1340 Fax: (503)526-5410 www.model.com sales@model.com |
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