二位元多工器

module top;

wire A1, A0, B1, B0, OUT0, OUT1, OUT2, OUT3, OUT4, OUT5,OUT6;
system_clock #100 clock1(B0);
system_clock #200 clock2(B1);
system_clock #400 clock2(A0);
system_clock #800 clock2(A1);
system_clock #1600 clock2(SEL);

and a1(OUT0,A1,SEL);
and a2(OUT1,A0,SEL);
and a3(OUT2,B1,OUT6);
and a4(OUT3,B0,OUT6);
not n1(OUT6,SEL);
or o1(OUT4,OUT0,OUT2);
or o2(OUT5,OUT1,OUT3);