Instruction: Add Immediate Unsigned
<DIV align="center"><b>Assembler Format</b></DIV>
<DIV align="center"><b>Example</b></DIV>
<DIV align="center"><b>Translates to...</b></DIV>
addiu rC, IMM16
addiu $3, oxFFFF
addiu rC, rC, IMM16 (where rA = rC)