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Now of course I keep trying to change it but once I get to the end of patching it says its invalid and wont let me change it. So if you have a way to do that let me know.

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    Think about carefully mov is just OR with a zero register
    – Peter Teoh
    Commented May 14, 2021 at 4:57
  • @PeterTeoh yes but I have never seen (or) be represented as (_or)
    – Peter Robertson
    Commented May 14, 2021 at 15:31
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    Ghidra uses _ before an instruction to designate it is in a branch delay slot
    – mumbel
    Commented May 16, 2021 at 2:57
  • @mumbel thanks brother I am still learning ghidra how would the branch delay slot be edited to give correct output example: or a0,v0,zero to move av0,v0 works great but in _or a0,s0,zero it ads och 04ch 0ch 04ch above it, now there doesnt appear to be a such thing as _move so how would that be rectified?
    – Peter Robertson
    Commented May 16, 2021 at 21:49
  • @PeterRobertson I would try clearing the branch instruction and the delay slot instruction, modify the delay slot instruction, and then re-disassemble both branch and delay slot instructions
    – mumbel
    Commented May 16, 2021 at 22:08

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Ghidra uses _ before an instruction to designate it is in a branch delay slot – mumbel 18 hours ago by @mumbel

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