Task Definition - Statemachine Output

task stm_out (nxt, first, sel, filter);

input [2:0] filter;

output nxt, first;

output [1:0] sel;

reg nxt, first;

reg [1:0] sel;

parameter idle=0, tap1=1, tap2=2, tap3=3, tap4=4;

begin

nxt = 0; first = 0;

case (filter)

tap1: begin sel = 0; first = 1; end

tap2: sel = 1;

tap3: sel = 2;

tap4: begin sel = 3; nxt = 1; end

default: begin nxt = 0; first = 0; sel = 0; end

endcase

end

endtask