I had used the Mega256 SCh to build my board, Using Arduino mega as ISP to burn sketch, I had loaded boot loader from Arduino IDE. and when I downloaded the blink led code. Led responding slow. same with Serial code. delay of 100 acting as of 1000 on my board in code baud rate in 9600 but i am getting proper value when i set 4800 in serial monitor. Can any one point out the problem Thanks