Abdul Mujid wrote:
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Mike M use 11.0592MHz. So max baud rate is 19200.

Not so, the full speed desired is attainable if T2 is used as the baud rate generator. It does remain to be seen if the rest of the code (the ISR and data handling) can cope with the speed.

Keep in mind when using the Keil baud rate calculator it that it is assuming a generic 8052. Different derivatives might allow clocking a timer differently which will effect the useable baud rates. Always read your data sheet!

Dennis