b. Determine the value of p, q, r, s, x and y after execution of the following VHDL program.

(12 Marks)

library ieee;

use ieee.std_logic_1164.all;

entity shift_operators is

port (a: in bit_vector(7 downto 0); p,q,r,s: out bit_vector(7 downto 0); b,c: in integer range -7 to 7; x,y: out integer range -7 to 7);

end shift_operators;

Architecture ex of shift_operators is

begin

a<= 10010010;

b<= 7;

c<=-4;

p<= a rol 2;

q<= a srl -3;

r<= a srl 2;

s<= a sla 3;

x<= b mod c;

y<= b rem c;

end ex;