Suppose we modified the single cycle MIPS datapath to implement an I type instruction named hwadd:

hwadd $s$1,$ $s$2,100$ #$s$1=4$s$2+$ Memory$[100]$

a$)$ Write down changes in the datapath. If there are not any changes, express accordingly.

b$)$ Draw the changes in the datapath figure.

c$)$ Write the values of control lines in the table $($if not readable: it shows values of control lines for R format, lw$,$sw and beq$)$ Include any new control lines if necessary.