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How is the processor enter into a BDM state?(a) BDM signal(b) Start signal(c) BDM acknowledge signal(d) Start signal of the processorThe question was posed to me by my school principal while I was bunking the class.This interesting question is from Debugging Technique:Xray topic in chapter Emulation and Debugging Techniques of Embedded Systems

Answer» RIGHT option is (a) BDM signal

Easy explanation: The assertion of the BDM signal or by executing the SPECIAL BDM instruction, the processor enter into the BDM state and when the processor enters into the BDM MODE, low-level MICROCODE takes the processor which allows the breakpoint to be SET, registers to be accessed and so on.


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