Jump to addres memory

Hi,
I have CrossStudio (Release 2.3.0.2012111600.16701) and Nuvoton chip NUC140. I want to do own bootloader (load to address 0 of APROM ), which can call Application program (load to address 0x1800 of APROM).

Test Application code toggles pins value.

Application code setting:

Selection Placement Macros:              FLASH_START=0x1800

Preprocessor Definition:                       USE_PROCESS_STACK

                                                                    STARTUP_FROM_RESET

Entry Point                                                 reset_handler

Memory map file

.init          0x000019e4       0x50 THUMB Flash Debug/NUC100_Startup.o

                0x000019e4                reset_handler

Test Bootloader code:

int main(void)

{

    void (*foo)(void);

    foo = (void (*)(void)) 0x19e5;         

    foo();

}

Bootloader code setting:

Selection Placement Macros:                FLASH_START=0x00

Preprocessor Definition:                        USE_PROCESS_STACK

                                                                    STARTUP_FROM_RESET

Entry Point                                                 reset_handler

Calling Application code from Bootloader code, it works OK. But I don’t know, why I must call address 0x19e5, when entry point of Application code is reset_handler (0x19e4).

Everytime I must call reset_handler + 1, didn't it depend on setting project for example Optimalize level, other FLASH_START value of application code,…?

Thank you for reply.
Best Regards
Martin