CSC231 Exercises with Mov, Arithmetic and Logic Instructions

The Mov Instruction

Assume that we have the following variables declared in the data segment.

         section     .data
msg1     db          "hello world", 10
MSGLEN   equ  	     $-msg1
msg2  	 db   	     "            "
msg3  	 db   	     "            "

msg4  	 db   	     "A man, a plan, a canal, Panama"
MSG3LEN	 equ  	     $-msg4
msg5  	 db   	     "                              "

fib1  	 db   	     1,	1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144,	233
FIB1LEN	 equ  	     $-fib1
fib2     db          0, 0, 0, 0, 0, 0, 0,  0,  0,  0,  0,  0,   0


fib3     dw          1, 1, 2, 3, 5, 8, 13
FIB3LEN	equ  	     ($-fib3)/2

fib4  	 dw   	     0,	0, 0, 0, 0 ,0, 0

fib5  	 dd   	     1,	1, 2, 3, 5, 8, 13, 23
fib6  	 dd   	     0, 0, 0, 0, 0, 0, 0,  0    

Question 1

Write the instructions necessary to move the contents of msg1 into msg2. Remember: we do not know loops yet, so don't try to use loops.

Question 2

Same as Question 1, but into msg3, and this time with as few instructions as possible.

Question 3

msg4 is a palyndrome. Reverse it into msg5 with MOV instructions.

Question 4

Copy the array fib1 into fib2 with MOV instructions.

Question 5

if the array fib1 were one byte longer, what would that byte contain, assuming that it represents the next fibonacci term of the series?

Question 6

Copy fib3 into fib4

Question 7

Copy fib5 into fib6