I trying to write a task to be called in my test bench which will send a
sequence of data back to DUT as per the address received from DUT. In
RTL, the address is sent always starting from 0 and then it is
incremented periodically from 0-15 (they have used a counter). What I
need to do is when I receive a address 0 , I should send the data for
address-0 and then keep on sending the data of addresses from 1 to till
15, on receiving the address. I am not sure about the below code. Any
help is appreciated.
task give_answer;
input[3:0] address;
begin
@(address);
begin
case(address)
4'b0000: begin data =8'b10100101; end
4'b0001: begin data =8'b00011101; end
4'b0010: begin data =8'b11010111; end
4'b0011: begin data =8'b11100110; end
4'b0100: begin data =8'b11111110; end
4'b0101: begin data =8'b11110011; end
4'b0110: begin data =8'b00111110; end
4'b0111: begin data =8'b11000100; end
4'b1000: begin data =8'b10101101; end
4'b1001: begin data =8'b10001111; end
4'b1010: begin data =8'b00101111; end
4'b1011: begin data =8'b00001001; end
4'b1100: begin data =8'b11000110; end
4'b1101: begin data =8'b11001010; end
4'b1110: begin data =8'b01000110; end
4'b1111: begin data =8'b00010000; end
default: begin data =8'b10100101; end
endcase
end
end
endtask
Sushma K. wrote: > I am not sure about the below code. Whats the problem with it? How does the simulation results look like? > Any help is appreciated. You must ask a specific question to get a specific answer.
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#5460034
You need to declare also the data output: output [7:0] data; And the @(address) looks strange. You also don't need so many begin / end. This makes it a bit unreadable.