$4\mathrm{.}11$ Examine the difficulty of adding a proposed lwi.d rd$,$ rs$1,$ rs$2($Load With Increment$)$

instruction to RISC$-$V$.$

Interpretation: Reg$[$rd$]=$Mem$[$Reg$[$rs$1]+$Reg$[$rs$2]]$

$4\mathrm{.}11\mathrm{.}1(5$ points$)<4\mathrm{.}4>$ Which new functional blocks $($if any$)$ do we need for this instruction?

$4\mathrm{.}11\mathrm{.}2(5$ points$)<4\mathrm{.}4>$ Which existing functional blocks $($if any$)$ require modification?

$4\mathrm{.}11\mathrm{.}3(5$ points$)<4\mathrm{.}4>$ Which new data paths $($if any$)$ do we need for this instruction?

$4\mathrm{.}11\mathrm{.}4(5$ points$)<4\mathrm{.}4>$ What new signals do we need $($if any$)$ from the control unit to support

this instruction?