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  • Contents of registers when 8085 is powered on?

    gaurav.bhorkar

    gaurav.bhorkar

    @gauravbhorkar-Pf9kZD
    Updated: Oct 22, 2024
    Views: 1.0K
    When we power on the 8085 microprocessor kit, all the memory locations contain garbage values.

    Is it the same case with registers (A, B, C, D, E, H, L)? Do they contain garbage values or they contain all zeroes?

    I have heard that the flag register is always initialized to zero, when 8085 is powered on. WHat about other registers?
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Replies

  • shiwa436

    Member • Feb 25, 2011

    These registers will have the previous values, which are stored in them while last used.
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  • gaurav.bhorkar

    Member • Feb 25, 2011

    I guess, you didn't get my question. I want to know the contents of Registers when we turn on (or switch on) the microprocessor. Are they garbage values of zeroes?
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  • gaurav.bhorkar

    Member • Feb 28, 2011

    Does anyone have an answer ?
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  • Reya

    Member • Mar 2, 2011

    @Jonusb3: Do you think your post is related to the topic???If so,please explain me!
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  • PraveenKumar Purushothaman

    Member • Mar 2, 2011

    They are reset with some arbitrary values! Check them out... 😀
    All are hex values. Got it from my Microprocessor Lecturer... 😁
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  • Reya

    Member • Mar 2, 2011

    @Praveen: Do you mean that the content of registers will have arbitrary values when we turn ON the microprocessor??
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  • PraveenKumar Purushothaman

    Member • Mar 2, 2011

    They get refreshed... Arbitrary in the sense, garbage values, which are hexadecimal in nature.
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  • shubhankar

    Member • Mar 2, 2011

    they are garbage values. totally vague values.
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  • PraveenKumar Purushothaman

    Member • Mar 2, 2011

    shubhankar
    they are garbage values. totally vague values.
    I second you!

    @praveena211 This is what I said... 😀
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  • gaurav.bhorkar

    Member • Mar 3, 2011

    Thank you all. Actually this was needed for my project.

    The values in registers are indeed garbage values when we turn on the MP. But I also came to know that a lot depends on the MP kit's manufacturer, many kits reset those garbage values to zeros when the MP is turned on.
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  • PraveenKumar Purushothaman

    Member • Mar 4, 2011

    You can also do it electronically purging when the memory starts... 😀
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  • gaurav.bhorkar

    Member • Mar 4, 2011

    praveenscience
    You can also do it electronically purging when the memory starts... 😀
    ah.. not sure of what you are talking about.
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  • PraveenKumar Purushothaman

    Member • Mar 4, 2011

    You know how to erase EEPROM? The same method... Electric purging...
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  • gaurav.bhorkar

    Member • Mar 4, 2011

    hmm..
    I'm still new in this field.

    Thanks by the way!
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  • PraveenKumar Purushothaman

    Member • Mar 4, 2011

    Dude, am not in that field at all!!! Lolz... 😁
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