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Converts An 8-Bit Integer To Binary And Hexadecimal Using Bitwise Operators In Flat Assembler (Fasm) Assignment Solution

June 28, 2024
Dr. Madison Davidson
Dr. Madison
🇺🇸 United States
Programming
Dr. Madison Davidson, an accomplished programming expert, earned her Ph.D. from the University of York, United Kingdom. With 15 years of experience, she excels in solving intricate programming assignments with finesse and expertise.
Key Topics
  • Instructions
    • Objective
  • Requirements and Specifications
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Instructions

Objective

Write a flat assembler program to convert a 8-bit integer to binary and hexadecimal using bitwise operators in flat assembler (fasm).

Requirements and Specifications

Do not use external functions. You may use the algorithm below.

1/8

Ask user to enter a number 0 - 255 and store into Num Algorithm to convert Value to binary:

  1. Set Count to 0. Move Num into a variable named Temp
  2. Move Temp into EAX then AND EAX with 128 (binary 10000000)
  3. if result is zero, output "O"
  4. if result is not zero, output "1"
  5. shift Temp left one digit
  6. increment Count
  7. if Count < 8, jump to step (2)

Algorithm to convert Value to hexadecimal:

  1. Move Num into a variable named Temp
  2. shift Temp right 4 digits to isolate left 4 digits
  3. if Temp =9, print Temp
  4. if Temp = 10, add 55 to Temp and print the ASCII character
  5. Move Num into a variable named Temp
  6. AND Temp with 240 (binary 00001111) to isolate right 4 digits
  7. if Temp =9, print Value
  8. if Temp =10, add 55 to Temp and print the ASCII character

Screenshots of output

program-to-convert-8-bit-integer-in-flat-assembler (1)
program-to-convert-8-bit-integer-in-flat-assembler 1 (1) (11)
program-to-convert-8-bit-integer-in-flat-assembler 2 (1) (1)
program-to-convert-8-bit-integer-in-flat-assembler 3 (1) (1)

Source Code

Balanced.asm

format PE console include 'win32ax.inc' ;======================================= section '.text' code readable executable ;======================================= start: cinvoke printf, "Enter an equation of ([{}]): " cinvoke scanf, "%s", Equation mov [InitialESP], ESP ; save initial stack value mov EBX, -1 ;offset for input string mainLoop: inc EBX mov EAX, 0 ; zero out EAX mov AL, [Equation+EBX] cmp AL, ' ' ; input token is a space - finish with mainloop je finishedMainLoop openParenthesis: cmp AL, '(' jne openBracket push EAX ; push ( onto stack jmp mainLoop openBracket: cmp AL, '[' jne openBrace push EAX ; push [ onto stack jmp mainLoop openBrace: cmp AL, '{' jne closeParenthesis push EAX ; push { onto stack jmp mainLoop closeParenthesis: cmp AL, ')' jne closeBracket cmp ESP, [InitialESP] je Unbalanced pop ECX cmp ECX, '(' jne Unbalanced jmp mainLoop closeBracket: cmp AL, ']' jne closeBrace cmp ESP, [InitialESP] je Unbalanced pop ECX cmp ECX, '[' jne Unbalanced jmp mainLoop closeBrace: cmp AL, '}' jne mainLoop ; ignore other chars cmp ESP, [InitialESP] je Unbalanced pop ECX cmp ECX, '{' jne Unbalanced jmp mainLoop finishedMainLoop: cmp ESP, [InitialESP] je Balanced Unbalanced: invoke printf, "Your equation is NOT balanced%c", 10 jmp ending Balanced: invoke printf, "Your equation IS balanced%c", 10 jmp ending ending: invoke Sleep,-1 ret ;====================================== section '.data' data readable writeable ;====================================== InitialESP: dd 0 Equation: times 100 db 32 ;====================================== section '.idata' import data readable ;====================================== library kernel32, 'kernel32.dll', \ msvcrt,'msvcrt.dll' import kernel32, \ ExitProcess,'ExitProcess', Sleep, 'Sleep' import msvcrt, \ printf, 'printf', scanf, 'scanf'

Convert.asm

format PE console include 'win32ax.inc' ;======================================= section '.text' code readable executable ;======================================= start: cinvoke printf, "%cEnter an integer from 0-255: ", 10 cinvoke scanf, "%d", Num call BeginBinary call BeginHex jmp start BeginBinary: cinvoke printf, "Binary: ", 10 mov DWORD[Count], 0 mov EAX, [Num] mov [Temp], EAX BinLoop: mov EAX, [Temp] and EAX, 128 jz Print0 cinvoke printf, "1" jmp Continue Print0: cinvoke printf, "0" Continue: shl DWORD[Temp], 1 inc DWORD[Count] cmp DWORD[Count], 8 jl BinLoop ret BeginHex: cinvoke printf, "%cHex: ", 10 mov EAX, [Num] mov [Temp], EAX shr DWORD[Temp], 4 call PrintHexDigit mov EAX, [Num] mov [Temp], EAX and DWORD[Temp], 15 call PrintHexDigit ret PrintHexDigit: cmp DWORD[Temp], 9 jg GreaterThan9 cinvoke printf, "%d", DWORD[Temp] ret GreaterThan9: ; print A-F add DWORD[Temp], 55 cinvoke printf, "%c", DWORD[Temp] ret ;====================================== section '.data' data readable writeable ;====================================== Num: dd 0 Temp: dd 0 Count: dd 0 ;====================================== section '.idata' import data readable ;====================================== library kernel32, 'kernel32.dll', \ msvcrt,'msvcrt.dll' import kernel32, \ ExitProcess,'ExitProcess' import msvcrt, \ printf, 'printf', scanf, 'scanf'

Random.asm

format PE console include 'win32ax.inc' ;======================================= section '.text' code readable executable ;======================================= start: cinvoke time, 0 cinvoke srand, EAX ; seed RNG getRandomNumberA: call getRandomNumber mov [A], EDX getRandomNumberB: call getRandomNumber cmp [A], EDX ; RN is in EDX je getRandomNumberB mov [B], EDX getRandomNumberC: call getRandomNumber cmp [A], EDX ; RN is in EDX je getRandomNumberC cmp [B], EDX ; RN is in EDX je getRandomNumberC mov [C], EDX getRandomNumberD: call getRandomNumber cmp [A], EDX ; RN is in EDX je getRandomNumberD cmp [B], EDX ; RN is in EDX je getRandomNumberD cmp [C], EDX ; RN is in EDX je getRandomNumberD mov [D], EDX cinvoke printf, "Your distinct random numbers: %d %d %d %d %c", DWORD[A], DWORD[B], DWORD[C], DWORD[D], 10 getRandomNumberR: call getRandomNumber mov [R], EDX dec DWORD[R] ; decrement to get 0-9 shr DWORD[R], 1 ; divide by 2 to get 0-4 cmp DWORD[R], 0 je phrase1 cmp DWORD[R], 1 je phrase2 cmp DWORD[R], 2 je phrase3 cmp DWORD[R], 3 je phrase4 jmp phrase5 phrase1: cinvoke printf, "May the fourth be with you!" jmp ending phrase2: cinvoke printf, "Never stop looking up!" jmp ending phrase3: cinvoke printf, "Love, not hate" jmp ending phrase4: cinvoke printf, "Believe you can and you are halfway there!" jmp ending phrase5: cinvoke printf, "Be the change that you wish to see in the world" jmp ending getRandomNumber: cinvoke rand cdq mov EBX, 10 idiv EBX inc EDX ret ; random number is in EDX ending: invoke Sleep, -1 ;====================================== section '.data' data readable writeable ;====================================== R: dd 0 A: dd 0 ; RandomNum 1-10 B: dd 0 ; RandomNum 1-10 C: dd 0 ; RandomNum 1-10 D: dd 0 ; RandomNum 1-10 ;====================================== section '.idata' import data readable ;====================================== library kernel32, 'kernel32.dll', \ msvcrt,'msvcrt.dll' import kernel32, \ ExitProcess,'ExitProcess', Sleep, 'Sleep' import msvcrt, \ printf, 'printf', scanf, 'scanf', \ time, 'time', srand, 'srand', \ rand, 'rand'

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