instructions to implement the same without affecting any other registers?

$(3+5)$

mapped $1/$O$.$ Write a program in assembly language to Check the status of toggle switch S$3$ & SO to implement the following without affecting any other bits of PORT C$.$

$\backslash$table$[[$S$3,$S$0,$operation$],[0,0,$PCo set LOW$],[0,1,$generate waveform of fig$($a$)$ at $P{C}_0$