求助-QUARTUS II版本：13.0编译程序出现的问题
QUARTUS II版本：13.0FPGA型号：EP2C8Q208
在编译的过程中出现了如下的警告：
（1）Critical Warning (332012): Synopsys Design Constraints File file not found: 'exp08_demo.sdc'. A Synopsys Design Constraints File is required by the TimeQuest Timing Analyzer to get proper timing constraints. Without it, the Compiler will not properly optimize the design.
Critical Warning (332012): Synopsys Design Constraints File file not found: 'exp08_demo.sdc'. A Synopsys Design Constraints File is required by the TimeQuest Timing Analyzer to get proper timing constraints. Without it, the Compiler will not properly optimize the design.
Critical Warning (332148): Timing requirements not met
Critical Warning (332148): Timing requirements not met
（2）Warning (306006): Found 4 output pins without output pin load capacitance assignment
Info (306007): Pin "Data_Out" has no specified output pin load capacitance -- assuming default load capacitance of 0 pF for timing analysis
Info (306007): Pin "Data_Out" has no specified output pin load capacitance -- assuming default load capacitance of 0 pF for timing analysis
Info (306007): Pin "Data_Out" has no specified output pin load capacitance -- assuming default load capacitance of 0 pF for timing analysis
Info (306007): Pin "Data_Out" has no specified output pin load capacitance -- assuming default load capacitance of 0 pF for timing analysis
程序是黑金开发板提供的程序：PS2解码 ，仔细检查了下，程序没有问题。
求助大侠，有没有什么好的方法来解决上述两个问题。。。谢谢
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