For the homework problems which follow assume you have included the file hc12.h in your C program. Thus, you can refer to PORTB when you want to access a byte at address 0x0001. Where I ask for some code just write that part of a C program which will do the task. Where I ask for a program write a complete program, include the #include "hc12.h" line, the declaration of variables, the main() function, etc.

1. Write some assembly code which will enable the timer subsystem, set the timer overflow rate to 65.536 ms, and enable the timer overflow interrupt.


2. Write some C code which will enable the timer subsystem, set the timer overflow rate to 65.536 ms, and enable the timer overflow interrupt.
   

3. An HC12 has the following in its memory:

   	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
   FFC0	CC	05	9F	CD	99	03	84	9C	01	9B	CC	90	66	FC	93	30
   FFD0	7E	E3	4B	7E	E5	38	21	54	05	83	09	34	2A	38	3C	03
   FFE0	41	38	66	F2	7C	13	37	0C	25	F2	0C	38	5F	1B	42	1A
   FFF0	7A	26	21	13	6A	AA	20	1F	4B	38	33	38	45	38	10	20

   
   
   1. What happens to the program counter when the HC12 is powered up or reset? What is the address of the first instruction the HC12 will execute after a reset?
   
   
   2. What is the address of the first instruction the HC12 will execute when it receives a Timer Overflow interrupt?
   
   
   3. What is the address of the first instruction the HC12 will execute when it receives a SPI interrupt?
   
   
   4. What is the address of the first instruction the HC12 will execute when it receives a Real Time interrupt?

   
   

4. Write an assembly language program to implement Lab 6.