Cs 216, Midterm exam, (from 2005) But expect some C

Open book You may consult your textbook, my printed class notes, and one page of information you have prepared. You may also use a printed dictionary. You may not use a calculator or any other electronic device. Do not copy any wrong answers!

1. Convert this signed hexadecimal number to decimal, show your work: 0xFFFFFE60
   
   
   




2. Convert the decimal number 444 to binary (or hexadecimal), show your work:
   
   
   
   
   
3. Given that $a0 contains an integer, If it is negative, put its absolute value in $v0, and put 0 (zero) in $v1. However, if $a0 is positive, put the remainder of dividing by 128 in $v1, and the square of the quotient in $v0. Note that $v0 and $v1 must still be as specified when the end of your section of code is finished. (You are not to write a whole program, just the instructions to do as asked.)
   
   
   
   
4. The following are pseudo-instructions. Please implement them with assembly language instructions which are not marked with a 'dagger' (and thus correspond to machine language instructions.)
   
   not $v0, $t0
   bgt $t0,'@', maybeLetter
   
   

5. Here is a loop. What do you expect the output to be?

la   $a0, another
li   $v0, 4

loop:	
   syscall
   sub  $a0,5
   sub  $v0,3
   bne  $v0, 1, loop

li	$v0,10 
	syscall

	.data
string:	  .asciiz	"Help!"
another:  .asciiz  "I need somebody\n”

6. Write MIPS code containing a loop to do the following:

   Suppose that $a0 points to an array of 365 words, containing daily temperatures. Make $v0 be the count of days of extreme temperature, that is, less than -10 or greater than +25
   
   
   

7. Write a program in C to add together corresponding elements of 2 arrays of the same size, and print each resulting number, and then the sum of all of them. The data might be defined like this:
   

   #define	SIZE	7
   int a[SIZE] = { 1, 3, 5, 7,   9, 88, -1};
   int b[SIZE] = {11,-5, 5, 3, -29, -8, 43};