Reference no: EM131090247
Consider the following interrupting system. The active-edge inputs on PJ7 and PP7 can occur at any time, including at the same time. The object is to count the number of each type of interrupt.
How would you best describe the usage of Count in this system?
a) This is a perfectly appropriate usage of Count, because there are two permanently allocated variables with private scope, such that each variable counts the number of interrupts for each ISR.
b) There is a critical section bug because of the read/modify/write access to a shared global.
c) Because both ISRs share the same Count, the system can not distinguish between a PJ7 and a PP7 interrupt.
d) Count is initialized each interrupt, so its value is not the total number.
e) The acknowledge statements in the two ISRs are not friendly because they affect all 8 bits of the flag register.
f) None of the above is true.
|
What is the name of the boundary in the solar nebula
: What is the name of the detailed theory that describes how our solar system formed from a cloud of interstellar gas and dust and What is the name of the boundary in the solar nebula beyond which ices could condense?
|
|
How accurate was the forecast
: On the day predicted, record those same data. Post the actual weather in the discussion board, including the original prediction. How accurate was the forecast? If it wasn't accurate, what do you think caused the weather to vary from the predic..
|
|
What the policy options available for accelerating growth
: The paper should address the following questions: How robust has this recovery been? Is there a threat of surging inflation? What are the policy options available for accelerating growth
|
|
Describe how screening influences and enhances prevention
: Identify a chronic disease that can be detected through screening. Describe how screening influences and enhances prevention. Discuss how and where you would implement a screening initiative and who would be the core or target population.
|
|
How would you best describe usage of count in this system
: This is a perfectly appropriate usage of Count, because there are two permanently allocated variables with private scope, such that each variable counts the number of interrupts for each ISR.
|
|
Child and family development professionals
: Does society have a right to legally define who can and cannot get married in the United States (this is a general question, NOT one focusing primarily on same-sex marriage)? Please be sure to use an example to clarify your position.
|
|
Do you agree with russell about the value of philosophy
: Do you agree with Russell about the value of philosophy? WHY or WHY NOT?
|
|
Technical specifications for most candidate solutions
: It is very important to note that the author of these reports can have no stake in the outcome of the report. Many students have difficulty deciding on a topic for this assignment. Your topic must be related to your major and describe a problem ..
|
|
Show this fifo is usually empty and has atmost three element
: An output-compare interrupt service routine calls Fifo_Get and actually outputs. Experimental observations show this FIFO is usually empty and has at most three elements. What does it mean?
|