File list (Check if you may need any files):
4.External Interrupt\app_ex.h
....................\app_ex_main.h
....................\app_ex_util.h
....................\Backup of int_ext.ewd
....................\Backup of int_ext.ewp
....................\Debug\Exe\int_ext.d51
....................\.....\Obj\int_ext.pbd
....................\.....\...\int_ext.r51
....................\.....\...\LCD3310.r51
....................\.....\...\wait.r51
....................\Desktop.ini
....................\hal.h
....................\int_ext.c
....................\int_ext.dep
....................\int_ext.ewd
....................\int_ext.ewp
....................\int_ext.eww
....................\LCD3310.c
....................\LCD3310.h
....................\RF04EB.h
....................\settings\int_ext.cspy.bat
....................\........\int_ext.dbgdt
....................\........\int_ext.dni
....................\........\int_ext.wsdt
....................\wait.c
....................\Debug\Exe
....................\.....\List
....................\.....\Obj
....................\Debug
....................\settings
4.External Interrupt