在CCS3.3下编译好的工程在CCS5.4下有错误

我一个在CCS3.3下编译好的工程，在CCS5.4下有错误。
error #16008-D: file "E:/dsp/F/ccs3.381/DSP28335/DS1302/DS1302/DSP2833x_examples/sci_loopback/Debug/DSP2833x_usDelay.obj" specifies ISA revision "C28FPU32", which is not compatible with ISA revision "C2800" specified in a previous file or on the command line
error #16008-D: file "E:/dsp/F/ccs3.381/DSP28335/DS1302/DS1302/DSP2833x_examples/sci_loopback/Debug/DSP2833x_SysCtrl.obj" specifies ISA revision "C28FPU32", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
error #16008-D: file "E:/dsp/F/ccs3.381/DSP28335/DS1302/DS1302/DSP2833x_examples/sci_loopback/Debug/DSP2833x_Sci.obj" specifies ISA revision "C28FPU32", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
error #16008-D: file "E:/dsp/F/ccs3.381/DSP28335/DS1302/DS1302/DSP2833x_examples/sci_loopback/Debug/DSP2833x_PieVect.obj" specifies ISA revision "C28FPU32", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
error #16008-D: file "E:/dsp/F/ccs3.381/DSP28335/DS1302/DS1302/DSP2833x_examples/sci_loopback/Debug/DSP2833x_PieCtrl.obj" specifies ISA revision "C28FPU32", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
>> Compilation failure
error #16008-D: file "E:/dsp/F/ccs3.381/DSP28335/DS1302/DS1302/DSP2833x_examples/sci_loopback/Debug/DSP2833x_GlobalVariableDefs.obj" specifies ISA revision "C28FPU32", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
error #16008-D: file "E:/dsp/F/ccs3.381/DSP28335/DS1302/DS1302/DSP2833x_examples/sci_loopback/Debug/DSP2833x_DefaultIsr.obj" specifies ISA revision "C28FPU32", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
error #16008-D: file "E:/dsp/F/ccs3.381/DSP28335/DS1302/DS1302/DSP2833x_examples/sci_loopback/Debug/DSP2833x_CodeStartBranch.obj" specifies ISA revision "C28FPU32", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
error #16008-D: file "E:/dsp/F/ccs3.381/DSP28335/DS1302/DS1302/DSP2833x_examples/sci_loopback/Debug/DSP2833x_ADC_cal.obj" specifies ISA revision "C28FPU32", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
error #16008-D: file "C:/ti/ccsv5/tools/compiler/c2000_6.1.3/lib/rts2800_ml.lib" specifies ISA revision "C2800", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
error #16008-D: file "C:/ti/ccsv5/tools/compiler/c2000_6.1.3/lib/rts2800_ml.lib" specifies ISA revision "C2800", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
error #16008-D: file "C:/ti/ccsv5/tools/compiler/c2000_6.1.3/lib/rts2800_ml.lib<_lock.obj>" specifies ISA revision "C2800", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
error #16008-D: file "C:/ti/ccsv5/tools/compiler/c2000_6.1.3/lib/rts2800_ml.lib" specifies ISA revision "C2800", which is not compatible with ISA revision "C2700" specified in a previous file or on the command line
error #10010: errors encountered during linking; "E:/dsp/F/ccs3.381/DSP28335/DS1302/DS1302/DSP2833x_examples/sci_loopback/Example_2833xScia_FFDLB/../../../DSP2833x_examples/sci_loopback/Debug/Example_2833xScia_FFDLB.out" not built
gmake: *** [E:/dsp/F/ccs3.381/DSP28335/DS1302/DS1302/DSP2833x_examples/sci_loopback/Example_2833xScia_FFDLB/../../../DSP2833x_examples/sci_loopback/Debug/Example_2833xScia_FFDLB.out] Error 1
gmake: Target `all' not remade because of errors.
**** Build Finished ****
请高手指教，如何解决？谢谢!

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