Please use CodeWarrior to write an assembly program to do the followings: Turn on only LED0 and LED7 continuously during the normal operation. Turn on all LEDs whenever there is XIRQ interrupt. Go...

• Turn on only LED0 and LED7 continuously during the normal operation.


• Turn on all LEDs whenever there is XIRQ interrupt.


• Go back to normal operation after no more interrupt.
  


• This process continues until a Reset.

Assembly Program

You will have 45 minutes to complete this part of the exam. You

may

use your textbook for this part of the Final Exam.

Instructions:

This is similar to the IRQ interrupt example program in the Unit 5 Lecture 8. Please use CodeWarrior to write an assembly program to do the followings:

• Turn on only LED0 and LED7 continuously during the normal operation.


• Turn on all LEDs whenever there is XIRQ interrupt.


• Go back to normal operation after no more interrupt.
  


• This process continues until a Reset.
  

Suggestions:

• You should type in the example program on IRQ interrupt that is in the Unit 5 Lecture 8, assemble it, download it, and test it. Understand this example program completely by reading the Unit 5 Lecture 8, on IRQ and by testing the example program.

• Then, read Unit 5 Lecture 8 slides on XIRQ interrupt, and modify the main: delete the code for enabling low-level triggering and for enabling IRQ pin, and add code to enable XIRQ pin, and clear the X bit (bit 6) in CCR.
  


• Change the service routine name from IRQ_ISR to XIRQ_ISR; Set up interrupt vector for XIRQ_ISR (Please understand how IRQ_ISR is set up in the example program, and do it similarly to set up XIRQ_ISR using the XIRQ interrupt vector),

After you have successfully assembled your program, and debugged your program, download your program, and test your program.

Notes: