Consider the $2$ in$-$out bus datapath in addition to the the PC$,$ IR$,$ MAR, and MDR$,$ assume that there are $10$ general$-$purpose registers numbered $R_0-R_9$ Also, assume that the ALU supports four functions $($add$,$ sunbtract $,$multiply,divide$)$consider the subtract operation sub R$1,$R$2,$R$0$ which subtract the contents of source registers $R_2,R_1,$ and store result in destination register R$0$ using micro instruction under horizontal organisation and vertical organisation