Gate timing simulation with ModelSim Altera

Dear all,

I would like to give you more detail about my problem :

1- EDA setting :

A- Design Entry/Synthesis : None

B- Simulation : ModelSim-Altera - Verilog HDL

C- Timing Analysis : None

D- Formal Verification : None

E- Board-Level : all None

2- I create a project, and compile it successfully.

3- After finishing compiling, I start gate-level simulation :

Tools -> Run Simulation Tool -> Gate Level Simulation

-> ModelSim is started and compile the design.

4- ModelSim is started with the following messages :

# Reading D:/altera/11.1/modelsim_ase/tcl/vsim/pref.tcl # do addersubstractor_run_msim_gate_verilog.do # if {[file exists gate_work]} {# vdel -lib gate_work -all# }# vlib gate_work# vmap work gate_work# Copying d:\altera\11.1\modelsim_ase\win32aloem/../modelsim.ini to modelsim.ini# Modifying modelsim.ini# ** Warning: Copied d:\altera\11.1\modelsim_ase\win32aloem/../modelsim.ini to modelsim.ini.# Updated modelsim.ini.# # vlog -vlog01compat -work work +incdir+. {addersubstractor.vo}# Model Technology ModelSim ALTERA vlog 10.0c Compiler 2011.09 Sep 21 2011# -- Compiling module addersubtractor# # Top level modules:# addersubtractor

5- Then I start simulation : Simulate -> Start Simulation

The following errors appear

# ** Error: (vsim-3033) addersubstractor.vo(3478): Instantiation of 'cycloneii_io' failed. The design unit was not found.# Region: /addersubtractor# Searched libraries:# E:\QuartusII_tutorial\simulation\modelsim\gate_work# ** Error: (vsim-3033) addersubstractor.vo(3514): Instantiation of 'cycloneii_io' failed. The design unit was not found.# Region: /addersubtractor# Searched libraries:# E:\QuartusII_tutorial\simulation\modelsim\gate_work# ** Error: (vsim-3033) addersubstractor.vo(3550): Instantiation of 'cycloneii_io' failed. The design unit was not found.# Region: /addersubtractor# Searched libraries:# E:\QuartusII_tutorial\simulation\modelsim\gate_work# ** Error: (vsim-3033) addersubstractor.vo(3586): Instantiation of 'cycloneii_io' failed. The design unit was not found.# Region: /addersubtractor# Searched libraries:# E:\QuartusII_tutorial\simulation\modelsim\gate_work# ** Error: (vsim-3033) addersubstractor.vo(3622): Instantiation of 'cycloneii_io' failed. The design unit was not found.# Region: /addersubtractor# Searched libraries:# E:\QuartusII_tutorial\simulation\modelsim\gate_work# ** Error: (vsim-3033) addersubstractor.vo(3658): Instantiation of 'cycloneii_io' failed. The design unit was not found.# Region: /addersubtractor# Searched libraries:# E:\QuartusII_tutorial\simulation\modelsim\gate_work# Error loading design

I think that ModelSim dose not understand the library.

Could you please give me some advices ?

Thank you,

Best regards,

Thanh Tran.