MAC283 CLASSWORK NO 11 a. (Classwork is due before your next class.) 1. Write a line by line explanation to this program. 2. What does the program do at every routine?Explain. explain step by step...

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MAC283 CLASSWORK NO 11 a. (Classwork is due before your next class.)
1. Write a line by line explanation to this program. 2. What does the program do at every routine?Explain.
explain step by step using Microsoft words here is the code
.model small  .386  .stack 100h   .data  msg1 db 13, 10, "Enter any number --> ", "$" msg2 db  "Enter an operation +,- * or /  --> ",13, 10, "$" msg3 db  "The Operation is --> ", "$" msg4 db  "The result is --> ", "$" By_base dd 21 by_10 dd 10  ; 32 bits variable with initial value = 10 sp_counter db 0 ; 8 bits variable with initial value of zero disp_number dd 0 ; 32 bits variable with initial value = 0 disp_number2 dd 0 disp_number3 dd 0 op_type db 0 last_key dd 0 ; 32 bits variable with initial value of zero remainder db 0 .code   main proc mov ax,@data ; set up data segment mov ds,ax         mov dx,offset msg1 call display_message  call m_keyin  call operation mov dx,offset msg1 call display_message  call m_keyin cmp op_type, "+" jnz short skip_plus  call op_plus  skiP_plus: cmp op_type, "-" jnz short skip_minus call op_minus  skip_minus:  cmp op_type, "*" jnz short skip_mul  call op_mult  skip_mul: cmp op_type, "/" jnz short skip_div  call op_div skip_div: call m_display mov ax, 4c00h  int 21h   operation proc mov dx,offset msg2 rpt4: call display_message mov dx,offset msg3 call display_message mov ah, 1 int 21h cmp al, 30h jns rpt4 mov op_type, al   ret operation endp  m_display proc mov dx,offset msg4 call display_message mov eax, disp_number mov sp_counter, 0  Base_lp:  LP1: mov edx, 0 div By_Base push dx inc sp_counter cmp eax, 0 jnz lp1  LP2: pop dx call display dec sp_counter jnz lp2 mov edx, -8 call display mov edx, by_base call display mov edx, -7 call display  dec By_base mov eax, disp_number cmp By_base, 1 jnz Base_lp  ret  m_display endp  op_minus proc mov eax, disp_number2 sub eax, disp_number3 mov disp_number, eax ret op_minus endp op_div proc  mov eax, disp_number2 div disp_number3 mov disp_number, eax mov remainder, dl  call display call m_display mov dl, -16 call display  mov dl, remainder call display mov dl, -1 call display mov edx, disp_number3  call display   mov ax, 4c00h  int 21h  op_div endp  op_mult proc mov eax, disp_number2 mul disp_number3 mov disp_number, eax  ret op_mult endp op_plus proc mov eax, disp_number2 add eax, disp_number3 mov disp_number, eax ret op_plus endp display proc add dl, 30h cmp dl, 3ah js short skip_hex add dl, 7 Skip_hex:   mov ah, 6 int 21h ret display endp  display_message proc mov ah, 9 ; to display to screen the string pointed by the DX register. int 21h mov edx, 0 ret display_message endp  m_keyin proc MOV disp_number, 0 mov last_key, 0 LP_key:; location in the program label mov eax, disp_number mul by_10  ; eax = (eax) * 10 add eax, last_key mov DISP_NUMBER, eax  ; save it to the number to display  mov ah, 1 ; enables a single key entry int 21h AND eax, 000000ffh cmp al, 13 ; compare the key entered to 13 i.e. ascii of CR jz short finkey ; if CR was pressed then exit the enter key routine sub al, 30h  ; remove the ascii from the number entered to get a pure number. MOV LAST_KEY, EAX  ; save the last digit entered jmp lp_key  ; unconditional jump to the enter key routine in a loop finkey: MOV eax, DISP_NUMBER cmp DISP_NUMBER2,0 jnz short skip MOV DISP_NUMBER2, EAX skip: MOV DISP_NUMBER3, EAX ret m_keyin endp   main endp end main








Answered Same DayJun 04, 2022

Answer To: MAC283 CLASSWORK NO 11 a. (Classwork is due before your next class.) 1. Write a line by line...

Anjali answered on Jun 05 2022
85 Votes
.model small XXXXXXXXXXstack 100h .data msg1 db 13, setting the datase here
10, "Enter any number --> ", "$" msg2 db "Enter an operation +,- * or / --> ",13, 10, "$"
msg3 db "The Operation is --> ", "$" msg4 db "The result is --> ", "$" By_base dd 21 by_10 dd 10 ;
//This code is all about setting the variables and perform the operation like using operators like +,- *
32 bits variable with initial value = 10 sp_counter db 0 ;
//In this code a 32-bit variable having the values 10 is set and counter variable is set.
8 bits variable with initial value of zero disp_number dd 0;
8 bits variable with initial value = 0 disp_number2 dd 0 disp_number3 dd 0 op_type db 0 last_key dd 0 ;
32 bits variable with initial value of zero remainder db 0 .code main proc mov ax
// 32 bit variable is set having initial value equal to zero
@data ; set up data segment     mov ds,
ax XXXXXXXXXXmov dx,offset msg1     call display_message     call m_keyin          call operation     mov dx,offset msg1     call display_message     call m_keyin     cmp op_type, "+" jnz short skip_plus          call op_plus          skiP_plus:     cmp op_type, "-" jnz short skip_minus     call op_minus      skip_minus:          cmp op_type, "*" jnz short skip_mul     call op_mult      skip_mul: cmp op_type, "/"
//This line of code represent the setting of data segment and sending the values to the auxiliary register on which the different operations like +,- * will working.
    
jnz short skip_div     call op_div skip_div:          call m_display mov ax, 4c00h int 21h ...
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