can you write a VHDL Code to be implemented on xilinx. The code must be for a $4$bit array multiplier. I want a separate entity to be created for $7$segment that uses the an and dp signal. Use switches SW$7-4$to represent the number A and switches SW$3-0$to represent B$.$The hexadecimal values of A and B are to be displayed on the $7-$segment displays HEX$2$and HEX$0,$respectively$.$ The result P $=$A X B is to be displayed on HEX$5-4.$THE $8$BIT OUTPUT ALSO NEEDS TO BE DISPLAYED ON LEDR $0$TO $7.$REMEMBER I WANT IT AS XILINX SO THAT I CAN USE THE DP AND AN IN PIN ASSIGNMENTS. ALSO GIVE ME THE PIN ASSIGNMENTS FOR NEXYS $4$BOARD$.$ GIVE ME THE WHOLE CODE AS ONE VHDL FILE!