raghava216
Junior Member level 3
Hi!
I wrote a controller design in vhdl and tested it with a script based test bench in Modelsim 6.0 SE.
When I run the test case 1, it got successfully executed and generated the required report files.
When the simulation is run in modelsim 6.0 SE for the first time ( irrespective of whether the previously created 'work' directory is deleted or not) It throws an error and simulation breaks with the message and reports are not getting generated.
Now, from second time onwards i.e. if I repeat the simulation in modelsim 6.0 SE by executing the macro again (irrespective of whether the previously created 'work' directory is deleted or not), It throws the following message. Reports are generated and no errors in the simulation process.
I am not able to trace the cause for this kind of behavior.
And in Questasim 6.4c,
when I run the test case 1, wherein a 'Z' value is read from a register, it gives a HREAD error and the displayed message is as follows:
When the simulation is run from second time onwards, the behavior is same and it is unlike that in modelsim 6.0 SE, where it was successful.
With other test cases, which do not deal with 'Z' values, the message is as follows:
This is the summary of the issues I am facing.
Looking fwd for solutions from experts in this area.
I wrote a controller design in vhdl and tested it with a script based test bench in Modelsim 6.0 SE.
When I run the test case 1, it got successfully executed and generated the required report files.
When the simulation is run in modelsim 6.0 SE for the first time ( irrespective of whether the previously created 'work' directory is deleted or not) It throws an error and simulation breaks with the message and reports are not getting generated.
Now, from second time onwards i.e. if I repeat the simulation in modelsim 6.0 SE by executing the macro again (irrespective of whether the previously created 'work' directory is deleted or not), It throws the following message. Reports are generated and no errors in the simulation process.
I am not able to trace the cause for this kind of behavior.
And in Questasim 6.4c,
when I run the test case 1, wherein a 'Z' value is read from a register, it gives a HREAD error and the displayed message is as follows:
When the simulation is run from second time onwards, the behavior is same and it is unlike that in modelsim 6.0 SE, where it was successful.
With other test cases, which do not deal with 'Z' values, the message is as follows:
This is the summary of the issues I am facing.
Looking fwd for solutions from experts in this area.