1.Please look at the \"IRQ Control Register\" in section 2.4 of the \"MC9S12G Fa

Question

1.Please look at the "IRQ Control Register" in section 2.4 of the "MC9S12G Family Reference Manual" (1276 pages), as well as chapter 23 and answer the following questions: a) What is the purpose of the two most significant bits of this register? Answer: b) If we wish to throw an interrupt in a falling edge, what should be this register's value? Answer: c) Timer module has many configuration registers. Which one controls the timer's pre-scaler settings? What value should we store to this register to have a prescaler of 1/128? Assume all other bits are configured the same as their reset value Answer:

Explanation / Answer

Acoording to Data Sheet,

a) IRQE: Once in normal mode, anytime in special mode
IRQEN: Anytime these two are the MSB bits in IRQ Control Register

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