在使用论坛上下载的SRIO例程，将其改成SYS/BIOS模式时，加入了doorbell中断后，出现如下错误，不知原因，请TI工程师能给予解答：
C:\Program Files\Texas Instruments\ccsv5\utils\gmake\gmake -k all 'Building file: ../6678.cfg' 'Invoking: XDCtools' "C:/Program Files/Texas Instruments/xdctools_3_20_08_88/xs" --xdcpath="C:/Program Files/Texas Instruments/mcsdk_2_00_00_beta2/demos;C:/Program Files/Texas Instruments/pdk_C6670_1_0_0_9_beta2/packages;C:/Program Files/Texas Instruments/pdk_C6678_1_0_0_9_beta2/packages;C:/Program Files/Texas Instruments/ipc_1_22_05_27/packages;C:/Program Files/Texas Instruments/ndk_2_20_03_24/packages;C:/Program Files/Texas Instruments/bios_6_31_04_27/packages;C:/Program Files/Texas Instruments/xdais_7_20_00_07/packages;C:/Program Files/Texas Instruments/xdais_7_20_00_07/examples;C:/Program Files/Texas Instruments/edma3_lld_02_11_01_02/packages;C:/Program Files/Texas Instruments/ccsv5/uia_1_00_01_09_eng/packages;C:/Program Files/Texas Instruments/imglib_c66x_3_0_1_0/packages;C:/Program Files/Texas Instruments/dsplib_c66x_3_0_0_7/packages;E:\study\DSP\6678_board\myRepository\packages;" xdc.tools.configuro -o configPkg -t ti.targets.elf.C66 -p myBoard -r debug -b "E:/study/205_project/SRIO/SRIO_Liu_BIOS/SRIO/src/Debug/configPkg/config.bld" -c "C:/Program Files/Texas Instruments/ccsv5/tools/compiler/c6000" "../6678.cfg" making package.mak (because of package.bld) ... js: "E:/study/205_project/SRIO/SRIO_Liu_BIOS/SRIO/src/Debug/configPkg/config.bld", line 3: Error: Can't find import file: 'E:/study/205_project/SRIO/SRIO_Liu/SRIO/.config/xconfig_6678/config.bld' (not found along 'E:\study\205_project\SRIO\SRIO_Liu_BIOS\SRIO\src\Debug\configPkg/;.;C:/PROGRA~1/TEXASI~1/mcsdk_2_00_00_beta2/demos;C:/PROGRA~1/TEXASI~1/pdk_C6670_1_0_0_9_beta2/packages;C:/PROGRA~1/TEXASI~1/pdk_C6678_1_0_0_9_beta2/packages;C:/PROGRA~1/TEXASI~1/ipc_1_22_05_27/packages;C:/PROGRA~1/TEXASI~1/ndk_2_20_03_24/packages;C:/PROGRA~1/TEXASI~1/bios_6_31_04_27/packages;C:/PROGRA~1/TEXASI~1/xdais_7_20_00_07/packages;C:/PROGRA~1/TEXASI~1/xdais_7_20_00_07/examples;C:/PROGRA~1/TEXASI~1/edma3_lld_02_11_01_02/packages;C:/PROGRA~1/TEXASI~1/ccsv5/uia_1_00_01_09_eng/packages;C:/PROGRA~1/TEXASI~1/imglib_c66x_3_0_1_0/packages;C:/PROGRA~1/TEXASI~1/dsplib_c66x_3_0_0_7/packages;E:/study/DSP/6678_board/myRepository/packages;C:/PROGRA~1/TEXASI~1/xdctools_3_20_08_88/packages;..;C:/PROGRA~1/TEXASI~1/xdctools_3_20_08_88;C:/PROGRA~1/TEXASI~1/xdctools_3_20_08_88/etc;C:\PROGRA~1\TEXASI~1\xdctools_3_20_08_88/include;C:\PROGRA~1\TEXASI~1\xdctools_3_20_08_88/packages') "./config.bld", line 3 xdctools_3_20_08_88\gmake.exe: *** No rule to make target `.configuro'. Stop. js: "C:/Program Files/Texas Instruments/xdctools_3_20_08_88/packages/xdc/tools/Cmdr.xs", line 51: Error: xdc.tools.configuro: configuration failed due to earlier errors (status = 2); 'linker.cmd' deleted. gmake: *** [configPkg/compiler.opt] Error 1 gmake: Target `all' not remade because of errors.