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AT89C51ED2 UART not work?

I downloaded AT89C51ED2 UART source code from ATMEL web.
when I connected from PC COM1 to AT89C51ED2 and sended a byte data, it sended a wrong byte data back.

Have some solutions about this @@?

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0 John Donaldson over 19 years ago in reply to Hsiao YuHung

"is 11.059MHz same with 11.0592MHz?"

The reload value shown is correct for 11.0592MHz. Are you absolutaly certain you aren't using a 12MHz crystal?
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0 John Donaldson over 19 years ago in reply to Hsiao YuHung

"is 11.059MHz same with 11.0592MHz?"

The reload value shown is correct for 11.0592MHz. Are you absolutaly certain you aren't using a 12MHz crystal?
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