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If the interrupt vector address of Serial Port 0 is 0x3B, how to connect the response with uv3 serial window.
It has nothing to do with interrupt vectors.
www.keil.com/.../uv3_sm_uartcommunication.htm
You use the ASSIGN command, where the inreg and outreg parameters specify the port... http://www.keil.com/support/man/docs/uv3/uv3_cm_assign.htm
"the interrupt vector address of Serial Port 0 is 0x3B"
That's odd! The standard 8051 serial port has interrupt vector address 0x23: http://www.keil.com/support/man/docs/c51/c51_le_interruptfuncs.htm
Chips with more than one UART usually make UART-0 the standard one, and add the others at non-standard addresses...