Please guide me for basic... Answer as I posted...

[abhijitnayak]

1] What boot block in p89v51RD2?
2] What is WDT and how to access it in P89V51RD2?
3] How to access 2nd DPTR in P89V51 RD2?
4] In an embedded controller with on chip ROM, why does the size of the ROM matter?
5] Why only R0 & R1 for internal RAM addressing?

 

[chuckey]

2] Watch Dog Timer. Must be addressed by program every "X", seconds, else in X+ seconds it will reset the processor. Stops the processor getting hung up by exceptional events (or bad programming!!)
4] if your code will not fit into the ROM, it probabley won't what you expect it to.
Frank