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manpreet Best Answer 3 years ago

I found this exam question that I have to tell how the beq instruction is coded in machine code.

This is the code:

loop:  addu    $8, $9, $10
    addiu   $8, $8, 0x00FF7A01
    beq    $8, $0, loop

Although my first question would be 0x1100FFFD the correct answer is 0x1100FFFB. I believe that this is because 0x00FF7A01 is bigger than 16 bit and addiu $8, $8, 0x00FF7A01 must be "decompiled" in more than one instruction.

So here are my questions.

Q1 - In what is addiu $8, $8, 0x00FF7A01 decomplided?

Q2 - And what if the immediate field on the beq instruction was bigger than 16 bits? Must I have to use jumps?

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manpreet Best Answer 3 years ago

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