Implement each design given below. Assume that value is stored as a doubleword i

Question

Implement each design given below. Assume that value is stored as a doubleword in memory, number is in EAX, and count is in ECX. (a) if value 1000 then add number*count to value; end if; (b) if value < 1000 then add 10*count to value; else value := 800; subtract 1 from count; end if; Students may use a calculator, the textbook and their notes for these questions. 1. Implement each design given below. Assume that value is stored as a doubleword in memory number is in EAX, and count is in ECX. if values 1000 then add number count to value; end if,

Explanation / Answer

.MODEL FLAT

.STACK 4096

.DATA

number DWORD   1000

.CODE

main        PROC     

  mov   ecx, 0      ; x := 0

mov   eax, 1      ; twoToX := 1

whileLE:    cmp   eax, number ; twoToX <= number?

jnle endWhileLE ; exit if not

body: add   eax, eax    ; multiply twoToX by 2

inc   ecx         ; add 1 to x

jmp whileLE ;

go check condition again endWhileLE:

dec   ecx         ; subtract 1 from x

mov   eax, 0      ; exit with return code 0 ret

main        EN DP

END

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