Microproccesor: HCS12

More important to show on paper than to write the program. Show on paper means show what happens to A,B,etc. as program processes.

1) Write a program which prompts user to enter a character, if the user presses "W?, the program calls a subroutine which loads a value $3D in register "A?, XOR's register A with $6F and displays the result in hexadecimal result on screen.

2) Write a program which prompts user to enter a character, if the user presses "X?, the program calls a subroutine which loads a value $3D in register "A?,logically shift left register A and displays the result in hexadecimal result on screen.

3) Write a program which prompts user to enter a character, if the user presses "Y?, the program calls a subroutine which loads a value $3B in register "A?,arithmetically shifts right register A and displays the result in hexadecimal result on screen.