Hi, I have been using a custom made board with 11.059MHz cystal and AT89C51ED2 IC in it. i have the MON51.hex monitor file which is available on the std keil MCBx51 board on the flash memory area of this board but this monitor program has an IAP facitily also. By using the IAP im programming the application on the flash. The problem arises when im running the Hello World application on my target board it works fine and i'm able to see the output on the hyperternimal but when 'm disconneting the hyperternimal and then connecting using the connect and disconnect buttons, it doesn't display anything(no transmission) and this happens in most of the PCs and in some PCs it does work perfectly after connecting or disconnecting the hyperterminal.
Plz help.. Regards Subhendu.