Test bench

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Which version of Modelsim are you using?

Modelsim Altera Start Edition should know about the lpm library already, type

vmap

to see the library mappings.

For example Modelsim 6.6c has the mapping:

# "lpm" maps to directory C:\software\altera\11.0sp1\modelsim_ase\win32aloem/../altera/vhdl/220model.

Perhaps you have managed to mess up your environment setting?

If you are using a full-edition version of Modelsim, then you need to compile the library. I can help with that, if that is the case.

Cheers,

Dave

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sir i have installed

Modelsim Altera Start Edition 10.0c

and tried typing vmap

it gives following error

# Reading C:/altera/11.1/modelsim_ase/tcl/vsim/pref.tcl # Loading project voq_switch_2# ** Error: (vish-19) Failed to access library '220model' at "220model".# No such file or directory. (errno = ENOENT)# ** Error: (vish-19) Failed to access library '220model_ver' at "220model_ver".# No such file or directory. (errno = ENOENT)# ** Error: (vish-19) Failed to access library 'altera_lnsim_ver' at "altera_lnsim_ver".# No such file or directory. (errno = ENOENT)

also tell me how to compile the library

thank you sir

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sir i have installed

Modelsim Altera Start Edition 10.0c

and tried typing vmap

it gives following error

# Reading C:/altera/11.1/modelsim_ase/tcl/vsim/pref.tcl # Loading project voq_switch_2# ** Error: (vish-19) Failed to access library '220model' at "220model".# No such file or directory. (errno = ENOENT)# ** Error: (vish-19) Failed to access library '220model_ver' at "220model_ver".# No such file or directory. (errno = ENOENT)# ** Error: (vish-19) Failed to access library 'altera_lnsim_ver' at "altera_lnsim_ver".# No such file or directory. (errno = ENOENT)

also tell me how to compile the library

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The libraries are *already* compiled. You have somehow managed to mess up your Modelsim environment.

Why is Modelsim trying to open the project voq_switch_2?

If you just start Modelsim and do not open any project, then the mapping to the Altera libraries should work just fine.

If you are opening a project file, you might be over-riding the defaults and that is the problem. Try creating a new project from scratch. Personally I use Tcl scripts and never see this type of issue.

Cheers,

Dave