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Regarding ISTP



Hello All,

I have one query.

 

with In UBL  few values are set as below.

in main () of  ubl.c

//------------------start--------------------------------//

 ISTP = 0x00A3FE00; /* Set Vector Address */
 asm("    NOP   5   ");
 TSR |= 0x000C; /* Set XEN/GEE */
 IER |= 0x0002; /* NMIE */
 asm("    NOP   5   ");
 asm("    NOP   5   ");

//---------------End---------------------------------//

I did not understnad the purpose of ISTP allocating to 0x00A3FE00 assuming this has L2Ram address.

Please can anybody explain me.

 

Regards,

Geetha