COMPUTER ASSEMBLY LANGUAGE 1.In this program data comes in pairs, say height and

Question

COMPUTER ASSEMBLY LANGUAGE

1.In this program data comes in pairs, say height and weight:

.data pairs:

.word 5 # number of pairs

.word 60, 90 # first pair: height, weight

.word 65, 105

.word 72, 256

.word 68, 270

.word 62, 115

Write a program that computes the average height and average weight. Leave the results in two registers.

2. Compute the dot product of two vectors. A vector is an array of integers. Both vectors are the same length. Ask the user for the length of the vectors. Then prompt for and read in the value of each element of each vector. Reserve space in memory for vectors of up to 10 elements, but allow vectors of any size one through 10.

.data

length: .word 0

vectorA: .space 40 # space for 10 integers

vectorB: .space 40 # space for 10 integers

The dot product of two vectors is the sum of the product of the corresponding elements. For example, (1, 2, 3) dot (4, 5, 6) is 1*4 + 2*5 + 3*6. After computing it, write out the dot product to the monitor.

3. (Please use stack to solve this problem) Write a subroutine that takes three arguments, A, X, and Y. It then computes A*X*Y and returns it. Use the subroutine to evaluate the following for various values of u and v:

5u2 - 12uv + 6v2.

Write a main method, in a loop, prompts the user for values of u and v and prints out the result. End the loop when the user enters zero for both u and v.

Explanation / Answer

1) Here i am storing the input data slightly in a different way, i ll be storing heights value in one array and weight value in another array and compute each average seperately.

performing average for just height, weight can be done by following this

DATA SEGMENT

ARRAY DB 60, 65, 72, 68, 62

AVG DB ?

ENDS

CODE SEGMENT

ASSUME DS:DATA CS:CODE

START:

MOV AX,DATA

MOV DS,AX

LEA SI,ARRAY

LEA DX,MSG

MOV AH,9

INT 21H

MOV AX,00

MOV BL,9

MOV CX,9

LOOP1:

ADD AL,ARRAY[SI]

INC SI

LOOP LOOP1

DIV BL

ADD AL,30H

MOV DL,AL

MOV AH,2

INT 21H

MOV AH,4CH

INT 21H

ENDS

END START

for 2nd question finding the dot product which is also easier similar to previous example, where you have two arrays. here multifly one array first element with another array and store it into another array, similar to follow the algorithm till the end of the array.

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