$2($a$)$ Give minimal sequence of ALP statements to implement the following: Call a subroutine whose address is available in $($D$.$E$).$

$(3)$marks

$($b$)$ Give macro RTL flow chart to convert a given $4$ digit BCD number available in $(H,L)$ register to its equivalent binary value in $)$ itself.

$($c$)$ Write minimum sequence of instructions for the subroutine which returns twenty times the contents of $(H,L)$ in $(H,L)($only$.$

$(5)$marks