Difference between lea and mov instructions in 8086. what's the differ between lea and mov offset ?

Discussion in 'and' started by Daigar , Wednesday, February 23, 2022 7:34:28 PM.

  1. Vizragore

    Vizragore

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    Thus, the difference is that the first is direct, the second indirect. The INC instruction increments the specified operand by 1. Sir Random Sir Random 3 3 silver badges 6 6 bronze badges. Active Oldest Votes. Hence, there is no confusion on my part.
     
  2. Voodoomi

    Voodoomi

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    What is the purpose of LEA instruction in 8086? forum? The MOV instruction is a 'MOVe' effectively a copy of the address that the TABLE-ADDR label stands for. The LEA instruction is a 'Load Effective.For instance, cc with -O2 optimization translates.
     
  3. Nikogor

    Nikogor

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    filmha2.online › What-is-the-difference-between-LEA-and-MOV-instruct.The mnemonic lea stands for load effective address.
     
  4. Kelmaran

    Kelmaran

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    The simplest way to think of it is that MOV deals with data, whereas LEA deals with addresses. Both instructions are similar in that they take a source and.First of all, I wouldn't have found an answer to this question by looking into that link.
     
  5. Ararisar

    Ararisar

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    filmha2.online › questions › what-is-the-difference.Linked 2.
     
  6. Zujas

    Zujas

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    The difference is that lea only calculates the address while mov actually moves the data. If you.I upvoted Nick's dup ages ago but vtc'd just now.
     
  7. Mikazragore

    Mikazragore

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    I want to know what's the difference between using: 1- lea dx,string 2- mov dx,offset string. I'm confused! as I think both of them gets 'string' address.Ostap Ostap 39 3 3 bronze badges.
     
  8. Zulkicage

    Zulkicage

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    Instructions to transfer the address · LEA − Used to load the address of operand into the provided register. · LDS − Used to load DS register and other provided.Load Effective Address calculates its src operand in the same way as the mov instruction does, but rather than loading the contents of that address into the dest operand, it loads the address itself.
     
  9. Kigashicage

    Kigashicage

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    In short, LEA loads.Lets understand this with a example.Forum Difference between lea and mov instructions in 8086
     
  10. Dokus

    Dokus

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    ? MOV will grab the data at the address inside the brackets.Load Effective Address calculates its src operand in the same way as the mov instruction does, but rather than loading the contents of that address into the dest operand, it loads the address itself.
     
  11. Fenrigore

    Fenrigore

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    For indirect addressing, the can only use the BX, BP, SI and DI registers. example: mov ax,[bx] Note that the difference between this and Register.This is despite the use of parentheses that occurs in both.
     
  12. Arashizshura

    Arashizshura

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    MOV AX, 02FFh ; AH = 02, AL = 0FFh Compare. Algorithm: operand1 - operand2. Page 7 of instructions LEA AX, m ; AX = offset of m.Next Article How do I download a custom pointer?
     
  13. Vogar

    Vogar

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    Intel Assembly Instructions Operands can be specified in a variety of ways that are called MOV. AL, CX????? ☹. Example uses register mode.Sign up or log in Sign up using Google.Forum Difference between lea and mov instructions in 8086
     
  14. Shakale

    Shakale

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    Compilers really do a great job at making the exe efficient.
     
  15. Tauran

    Tauran

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    Michel Sayde Michel Sayde 11 1 1 bronze badge.
    Difference between lea and mov instructions in 8086. Subscribe to RSS
     
  16. Moogulmaran

    Moogulmaran

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    Amit Singh Tomar Amit Singh Tomar 8, 25 25 gold badges silver badges bronze badges.
     
  17. Nikolabar

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  18. Mezill

    Mezill

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    In the case of the mov instruction, the result is to access this location in memory and reference the.
     
  19. Vulkree

    Vulkree

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    It was added to because hardware is there to decode and calculate adressing modes.
     
  20. Milmaran

    Milmaran

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    LEA will perform the calculation of the address inside the brackets and place that calculated address into the destination operand.
     
  21. Mezizil

    Mezizil

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    Ask Question.
     
  22. Vorg

    Vorg

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  23. Moogulkis

    Moogulkis

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    In the case of the mov instruction, the result is to access this location in memory and reference the.
     
  24. Meztimuro

    Meztimuro

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    Its useful if you have a multi-part calculation with multiple base addresses etc.
     
  25. Vudozuru

    Vudozuru

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    On reflection, I was too hasty and now with naveen that a the other question does not answer "what's the difference" and b this is a useful question.
     
  26. Dotilar

    Dotilar

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    Thus, either you write mov rax, [rbph] to transfer Bit values, or mov eax, dword ptr [rbph].Forum Difference between lea and mov instructions in 8086
    Difference between lea and mov instructions in 8086. Microprocessor - 8086 Instruction Sets
     
  27. Moogur

    Moogur

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    Compilers really do a great job at making the exe efficient.
    Difference between lea and mov instructions in 8086.
     
  28. Mim

    Mim

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    The purpose of LEA is to allow one to perform a non-trivial address calculation and store the result [for later usage].
     
  29. Tozuru

    Tozuru

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    Begin typing your search term above and press enter to search.
     
  30. Goltimuro

    Goltimuro

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    Improve this question.
    Difference between lea and mov instructions in 8086.
     
  31. Shabar

    Shabar

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    No load from memory is involved, just arithmetic operations [2].
     
  32. Yozshugami

    Yozshugami

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    The offset is evaluated statically by the assembler when you use the MOV alternative, hence the offset must be available for computation at assembly time.
     
  33. Sall

    Sall

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    This is true, but there's a subtlety that should be addressed.
     
  34. Voodoomi

    Voodoomi

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    The Overflow Blog.
     
  35. Faumi

    Faumi

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    In the CLR's CIL which is a higher level stack based abstract machine, the term load refers to putting a value onto the notional stack and is normally l
     
  36. Mezishakar

    Mezishakar

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    Thank you for your patience as I am diving into 64b assembler.
     

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