PROGRAM $1($WRITE IN ASSEMBLY$)$

To practice with conditional branch instructions, write a program that finds the minimum $($most

negative$)$ and maximum $($most positive$)$ numbers in an array of $20$ signed $8-$bit integers. As shown

below, the array is to be stored in RAM beginning at location LIST using the following test data

LIST: $.$byte $5,-8,20,15,-20,83,125,-107,0,35,14,-19,-30,0,35,-8,-6,22,0,-1$

MIN: $.$word $0$

MAX: $.$word $0$

Write the minimum and maximum values in $32-$bit variables MIN and MAX, respectively. You

should be able to determine both values within a single program loop, with the loop repeated $20$

times.

Submit your source program and an Expressions view showing MIN, MAX and the elements of

array LIST $-$ all in signed decimal format. Also include brief answers to the following questions:

What would you change in your program if LIST had been an array of unsigned $8-$bit integers?

What would you change in your program if LIST had been an array of signed $16-$bit integers?

PROGRAM $2($WRITE IN ASSEMBLY$)$

Create a program that will convert any uppercase letters to lowercase letters within a null$-$

terminated string of ASCII characters. Any changes should replace the original values within the

character string in memory. The program should be able to process strings of arbitrary length.

Recall that a null$-$terminated string of ASCII characters can be placed in memory with the $.$asciz

assembler directive:

Example: STRG: $.$asciz "This Is A $*\%5$@ STRING!"

Things to consider:

How far apart $($numerically$)$ are uppercase and lowercase ASCII code values?

It's not likely that you will modify every single character. If you read in a lowercase letter,

a numeric digit, a space, or punctuation, there's nothing that needs to be modified.

When you reach the null value $(0x00),$ there's nothing left to change.

Submit your source file and a Memory view showing the final character string. Use the ASCII

rendering for the Memory view, which shows the actual characters in the string.