Hello, Well then, let the experts guide me. MCU: RX210 IDE: IAR Requirement: Update a structure with some information before going to reset, so that after the controller come out of reset, the controller after reading the structure should be able to get those information. Steps: In low_level_init.c file, the following array is declared. unsigned char __StartupCode[ 16] @ "MYOWNSECTION"; This is what the map file shows about the array: ___StartupCode 0x000008a4 0x10 Data Gb low_level_init.o [1] And this is how my linker file lnkr5f52108c.icf looks like: define region ROM_region16 = mem:[from 0xFFFF8000 to 0xFFFFFFFF]; define region RAM_region16 = mem:[from 0x00000004 to 0x00007FFF]; define region ROM_region24 = mem:[from 0xFFF80000 to 0xFFFFFFFF]; define region RAM_region24 = mem:[from 0x00000004 to 0x0000FFFF]; define region ROM_region32 = mem:[from 0xFFF80000 to 0xFFFFFFFF]; define region RAM_region32 = mem:[from 0x00000004 to 0x0000FFFF]; define region DATA_FLASH_region = mem:[from 0x00100000 to 0x00101FFF]; Before going to reset(Both Softreset and #RES) the array __StartupCode is updated. After coming out of reset the value of the array are initialized to zero. This might be a trivial, but I am stuck here. Please guide me, so as how can I retain the values of the array __StartupCode after reset. Regards Sujan
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