Question

PROGRAMMING ASSIGNMENT: Write a fully-commented program for the HC12 board, including appropriate directives and labels for memory operands and constants, called Arith.asm. The program should do the following:

O The program should start execution at address $1000.
O Use directives to create an array of five unsigned decimal byte values: 50, 188, 63, 211, and 3 stored in contiguous memory at locations $2000–$2004.
O Calculate the unsigned Sum of the five numbers and store this word at memory location $2010-$2011.
O Calculate the unsigned Average of the 5 numbers and store this byte in memory after the sum.
O Subtract the Average from the Sum and store the unsigned Difference (word) in memory after the Average.

Answer 1

To write the Arith.asm program for the HC12 board, you can start by defining the starting address, create an array of five unsigned decimal byte values, calculate the sum, average, and difference of the numbers, and store the results in memory.

Step-by-step explanation:

To write the Arith.asm program for the HC12 board, you can start by defining the starting address using a directive like ORG $1000. Then, you can use the DB directive to define an array of five unsigned decimal byte values with the values 50, 188, 63, 211, and 3 stored in contiguous memory from $2000 to $2004.

To calculate the sum of the five numbers, you can use the LDAA (load accumulator A) instruction to load each value into a register, and then add them together using the ADDA (add accumulator A) instruction. The result can be stored in memory at locations $2010-$2011 using the STAA (store accumulator A) instruction.

To calculate the average of the five numbers, you can divide the sum by 5. Since the sum is stored as a word, you can divide it by the decimal value 5 using the DIV instruction. The result can be stored in memory after the sum.

To find the difference between the sum and the average, you can subtract the average from the sum using the SUBA (subtract accumulator A) instruction. The result can be stored in memory after the average.