Friends,
I have problems with the keil software.
i dont know how to use interrupts and the register bank switching.
If i use
#pragma rb(2)
char r0;
ro ='A';
now i expect the content of 10h to be 41 h but this does not happen.

2)the functions start from memory location 4423H etc. I am using atmel 89c52 and ithas an inbiuilt flash rom,
I cannot burn the program into the flash because the function printf is written in the external memory.
can any one give me some help
Sri