I spotted something else :

"ORI
Bitwise OR with unsigned signed immediate
For OR, it actually makes sense to replicate the high bits "

"unsigned signed" ?

furthermore, it makes more sense to have a consistent rule about
immediate's signedness.
 * easier when coding
 * simpler when implementing
I prefer to have everything signed.
If i need more than 15 bits for a mask,
i preload it in another register...

yg

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