This program is supposed to be in assembly language. Please use basic MASM only.
ID: 3860528 • Letter: T
Question
This program is supposed to be in assembly language. Please use basic MASM only. Create a procedure that fills an array of doublewords with N random integers, making sure the values fall within the range j...k, inclusive. When calling the procedure, pass a pointer to the array that will hold the data, pass N, and pass the values of j and k. Preserve all register values between calls to the procedure. Write a test program that calls the procedure twice, using different values for j and k. Verify your results using a debugger.
Explanation / Answer
data
array1 SDWORD 50 DUP(?) ;allocate room for array
;ptr3 SDWORD array1
count DD 0 ;count variable
deduct dd 0 ;deduct variable
.code
main PROC
mov ecx,50 ;move 50 to loop counter
mov esi, OFFSET array1-4 ;point to the array
loop1:
add esi,4 ;point to first element
call Random32 ;generate random 32 bit integer
call WriteInt
mov [esi],eax ;mov integer to memory
call Crlf ;create a new line
loop loop1
mov ecx,50 ;mov 50 to loop counter
mov esi,OFFSET array1-4 ;point to array
mov ebx,0
step:
add esi,4 ;point to element
mov eax,[esi] ;mov 1st element in memory to eax
cmp eax,0 ;compare eax to 0
.if (eax < 0)
inc count
.else
dec deduct
.endif
loop step
mov eax,count ;mov the count to eax
call WriteInt ;write number to screen
exit
main ENDP
END main
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