my program doesn't run through MON51 for DS5000

I made a development board with DS5000FP and downloaded Mon51 for DS5000 on SRAM by using DS5000 bootstap loader. Debugger when it is started can load the compiled code to 0x2000 address where I put my code. After the start up a yellow arrow stay at 0x0000 address. When I start to run program, the mon51 doesn't give handle to user program and resume the yellow arrow's position to 0x0000 address. I tried another thing to give program handle to user program with G 0x2000 but same result i got. Mon51 looks like works perfectly except doesn't give the handle to program

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