The ARM processor is executing an embedded C## program. When the program begins executing. a motion

sensor is triggered to defect an object in a confined room. In this case, when an object is defected, a Timer

is triggered to determine how long the object was in the confined room. Notably, the Timer can only stop

counting once the motion sensor no longer detect any object in the confined room. However, when the Tirner

reaches $60$ the processor is forced to handle another ISR onginating from a programmed exception $[40$

Marks$]$

a$)$ Name and explain three commands performed by the processor to move readings from the motion

sensor INVOUT of memory $[6$ Marks$]$

b$)$ Name ard explain three procedures engioyed by the processor to ensure that readings from the

molion sersor are processed by specific instructions $[6$ Mark$]]$