hi folks,

sorry for the delay in replying. i was tied up with another project & did not have the time to experiment further.

ok, serial transmission at 4800 bps has started working perfectly well with the 10 MHz & th1 = 246d. the f8s started after i started my board with a programmed flash instead of the in circuit emulator. i also added a 2 ms delay between bytes as recommended by Daniel as a safety measure.

now i am running the board at 9600 bps with the same osc & th1 = 250d and all the other parameters as before. it is working beautifully.

many thanks to Andy, Stephane, Michael, Erik & Daniel for helping me with this one :))

rgds
Punit