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Instruction set need help

Discussion in 'Microcontrollers, Programming and IoT' started by vead, Mar 10, 2014.

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  1. vead


    Nov 27, 2011
    I have question how to design Instruction set (just for paper work)

    I chose 8 bit instruction with 8 instruction 4 for arithmetic operations and 4 for logic operation

    1)what should be operand and opcode ?
    2)what should I know before to design ?
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    Jan 21, 2010
    Your first step is to know how many instructions you can have with an 8 bit instruction length. (hint: it's not 8)
  3. BobK


    Jan 5, 2010
    You really need to go back and learn something about microcontrollers before trying to design one.

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