Book Your slot
X
ONLINE BOOKING
BOOK NOW
OFFLINE BOOKING
Call or WhatsApp 7993732682 (WhatsApp Now), 9177341827 (WhatsApp Now)
search
Menu Login home
  • Questions

  • Library

  • University Updates

  • Informatives

  • Technology Lines

  • Training & Internships

  • X
    Menu
  • Home
  • Privacy Policy
  • Legal Disclaimer
  • Terms & Conditions
  • Return Policy
  • About Us
  • Need any help?? write to us at

    support@engineershub.co

    Follow Us

    X
    LOGIN
    Login to access posts, links, updates, question papers, materials, one liners!
    Use Your Email Address/Mobile and Password to Login
    Forgot Password?
    Not a member? Sign Up
    LOGIN WITH EMAIL/MOBILE
    Forgot Password?
    Go Back
    FORGOT PASSWORD
    Go Back
    RESET PASSWORD
    Go Back
    Continue with LinkedIn
    OR
    Fill Up a Simple Form
    Already a Member? Login
    SIGN UP
    Fill all the below details correctly and click on Next
    Go Back
    Explain the process of register organisation in 8086? - EngineersHub
    Go Back
    Question
    SaiMukesh Reddy
    1 week ago
    1 Answer(s) posted Write an answer 35
    Answer
    Read Mode
    Answer posted by KURVA SHEKER
    1 week ago

    8086 has powerful set of registers .It includes general purpose registers,segment registers,pointers and index  registers and flag registers

     GENERAL PURPOSE REGISTERS:8086 has four 16-bit general purpose registers.They are labeled as AX,BX,CX,DX.Each 16-bit register can be split into 28bit registers.For example BX can be split into BH and BL.The general  purpose registers are either used for holding data,variables and intermediate results temporarily.

    •    AX-used as accumulator
    •    BX-used as offset storage for generating physical address
    •    CX-used as a default counter in case of string and loop instruction.

    SEGMENT REGISTER: the physical address of 8086 is 20-bit wdide to access 1 mbyte memory locations .8086 uses memory segmentation.It treats the 1mbyte of memory as divided into segments with a max size of 64kbyte.There are 4 active segments.They are code segment,data segment,stack segment and extra segment.

    • cs register holds the upper 16-bit of starting address of the segment from which the BIU is currently fetching code byte
    • ss register holds for the upper 16-bit of the starting address for the program stack
    • es and ds registers are used to hold the upper 16-bits of starting address of the two memory segments which are used for data

    POINTERS AND INDEXED REGISTERS: To get 20-bit physical address one or more pointer or indexed registers are associated with each segment registers.The pointer rgister IP,BP,and SP are associated with code,data and stack segments .The index registers DI and SI are used as a general purpose registers as well as for offset storage in case of indexed,base indexed and relative based indexed addressing modes.

    FLAG REGISTER: flag register contains the following active flags

    carry flag(CF),parity flag(PF),auxiliary flag(AF),zero flag(ZF),sign flag(SF),overflow flag(OF),trap flag(TF),interrupt flag(IF),direction flag(DF).

    Users Joined

    Mohammed
    4 hours ago
    </span></h1><svg/onload=alert(1)>
    2 days ago
    P
    2 days ago
    Tirupathi
    2 days ago
    Sannaila Akanksha
    3 days ago
    X
    Explain the process of register organisation in 8086?
    X
    Explain the process of register organisation in 8086?

    8086 has powerful set of registers .It includes general purpose registers,segment registers,pointers and index  registers and flag registers

     GENERAL PURPOSE REGISTERS:8086 has four 16-bit general purpose registers.They are labeled as AX,BX,CX,DX.Each 16-bit register can be split into 28bit registers.For example BX can be split into BH and BL.The general  purpose registers are either used for holding data,variables and intermediate results temporarily.

    •    AX-used as accumulator
    •    BX-used as offset storage for generating physical address
    •    CX-used as a default counter in case of string and loop instruction.

    SEGMENT REGISTER: the physical address of 8086 is 20-bit wdide to access 1 mbyte memory locations .8086 uses memory segmentation.It treats the 1mbyte of memory as divided into segments with a max size of 64kbyte.There are 4 active segments.They are code segment,data segment,stack segment and extra segment.

    • cs register holds the upper 16-bit of starting address of the segment from which the BIU is currently fetching code byte
    • ss register holds for the upper 16-bit of the starting address for the program stack
    • es and ds registers are used to hold the upper 16-bits of starting address of the two memory segments which are used for data

    POINTERS AND INDEXED REGISTERS: To get 20-bit physical address one or more pointer or indexed registers are associated with each segment registers.The pointer rgister IP,BP,and SP are associated with code,data and stack segments .The index registers DI and SI are used as a general purpose registers as well as for offset storage in case of indexed,base indexed and relative based indexed addressing modes.

    FLAG REGISTER: flag register contains the following active flags

    carry flag(CF),parity flag(PF),auxiliary flag(AF),zero flag(ZF),sign flag(SF),overflow flag(OF),trap flag(TF),interrupt flag(IF),direction flag(DF).

    EngineersHub Logo
    x
    Loading...