Question

Verilog code with explanation please

// Netflix has been engaged by movie studios to advertise new movies.

// Netflix will show visitors one of 4 ads based on the kind of movie

// they last watched.

// The following characteristics of the last watched movie are

// considered:

// - Whether the movie was animated? (A = 1 means the movie was

//     animated; otherwise A = 0)

// - Whether the starring actor was female (F = 1) or male (F = 0)?

// - The type of movie: (T = 2'b00 (action movie), 2'b01 (romance),

//     2'b10 (comedy), 2'b11 (thriller))

// The ad served is chosen by the following rules:

// - "A Good Day to Die Hard" (M = 2'b00) will be shown to viewers of

//     action movies and thrillers, unless they are animated or had a

//     female starring actor.

// - "Safe Haven" (M = 2'b01) will be selected for people who had

//     viewed romance movies or movies with a female starring actor that

//     are not comedies.

// - When the previous two movie ads aren't shown, "Escape from Planet

//     Earth" (M = 2'b10) will be shown to people viewing animated movies,

//     comedies, or action movies.

// - Otherwise, "Saving Lincoln" (M = 2'b11) will be shown.

module movies(M, A, F, T);

   output [1:0] M;

   input    A, F;

   input  [1:0] T;

   

endmodule // movies

Answer 1

Verilog code:

//=======================================

module movies(M, A, F, T);
   output [1:0] M;
   input    A, F;
   input [1:0] T;

reg [1:0] movie;
always @(*)    // always combo loop
begin
// Action movie or thriller movie but not animated or starred by female
if(((T==2'b00) || (T==2'b11)) && ((A!=1'b1) && (F!=1'b1)))
    begin
        movie = 2'b00;
    end
// Viwed romantic movie or female stared movie but not commedy
    else if((T==2'b01) || ( F==1'b1 && T!=2'b10 ))
    begin
        movie = 2'b01;
    end
// People viwed animated movie or commedies or action movie
    else if((A==1'b1) || (T==2'b10) || (T==2'b00))
    begin
        movie = 2'b10;
    end
// otherwise
    else
    begin
        movie = 2'b11;
    end
end

assign M = movie; // assigning movie to output
endmodule // movies

//=======================================

tested with testbench:

//=======================================

// Code your testbench here
// or browse Examples
module TB();

reg A,F;
reg [1:0] T;
wire [1:0] M;
initial
begin

// All 16 case assignment
    A=0;F=0; T=2'b00;
    #1 T=2'b01;
    #1 T=2'b10;
    #1 T=2'b11;
    #1 T=2'b00; F = 1;
    #1 T=2'b01;
    #1 T=2'b10;
    #1 T=2'b11;
    #1 T=2'b00;F=0; A=1;
    #1 T=2'b01;
    #1 T=2'b10;
    #1 T=2'b11;
    #1 T=2'b00; F = 1;
    #1 T=2'b01;
    #1 T=2'b10;
    #1 T=2'b11;

end

initial
begin
// print out input and output of module movies
$display(" Advertisment A F T M");
$monitor("               %b %b %b %b",A,F,T,M);
end

movies umovies
(
.M(M),
.A(A),
.F(F),
.T(T)
);

endmodule

//=======================================

Simulation log print:

Theoretical Truth table:

A	F	T	M
0	0	00	00
0	0	01	01
0	0	10	10
0	0	11	00
0	1	00	01
0	1	01	01
0	1	10	10
0	1	11	01
1	0	00	10
1	0	01	01
1	0	10	10
1	0	11	10
1	1	00	01
1	1	01	01
1	1	10	10
1	1	11	01