Dear Friends... I am Ramesh, working on project on p89c669 MC. I am facing problem in programming serial interrupts in 8051C for p89c669. it has dual UARTs. what is interrupt no.s used by 8051C for the p89c669. (Interrupt vector table ) Pls suggest some sample pgms on it...
Thanking you...
Ramesh.
"([interrupt vector address] - 3)/8"
Or see the table here: http://www.keil.com/support/man/docs/c51/c51_le_interruptfuncs.htm
The address is the important thing - that's the only thing that the hardware knows.