Sridhar S wrote:
-------------------------------
xdata unsigned char var _at_ 0x9000;


void adc()
{
...
...
var=P1;
...
...
}



In addition to the port pin snafu pointed out by Mr Klein you also have a problem with the fact that the usage of var=P1; in the adc() subroutine assigns the value to a undeclared variable.

Michael Karas