夏老师：
您好。有一个问题想请教一下您。我在用MODELSIM进行时序仿真的时候，总是出现以下的错误提示，
# Loading C:/modeltech_6.5g/sim.stratix_and1
# Loading C:/modeltech_6.5g/sim.stratix_mux21
# Loading C:/modeltech_6.5g/sim.stratix_asynch_io
# Loading C:/modeltech_6.5g/sim.stratix_lcell
# Loading C:/modeltech_6.5g/sim.stratix_asynch_lcell
# Loading C:/modeltech_6.5g/sim.stratix_lcell_register
# Loading instances from C:/altera/10.0/simulation/modelsim/we_v.sdo
# Loading timing data from C:/altera/10.0/simulation/modelsim/we_v.sdo
# ** Warning: (vsim-SDF-3445) Failed to parse SDF file "we_v.sdo".
# Time: 0 ps Iteration: 0 Region: /t File: C:/altera/10.0/cc/test.v
# Error loading design
警告提示时序文件不能解析，而我在用QUARTUS进行综合的时候，出现了警告说
Warning: Classic Timing Analyzer will not be available in a future release of the Quartus II software. Use the TimeQuest Timing Analyzer to run timing analysis on your design. Convert all the project settings and the timing constraints to TimeQuest Timing Analyzer equivalents.
是不是因为这个，所以后仿真无法进行，另外如何防止这个问题出现，谢谢。
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