Behavioral

1
Behavioral

• module MUX4_to_1(y, x, s)
• input x30, s10
• output y
• reg y
• always _at_(x or s)
• begin
• if (s 0)
• yx0
• else if
• end
• endmodule

2
Continuous Assignment

• module MUX4_to_1(y, x, s)
• input x30, s10
• output y
• assign y (!s0!s1x0)
  (!s1s0x1)
• (s0!s1x2) (s1s0x3)
• endmodule

3
Structure

• module MUX4_to_1(y, x, s)
• input x30, s10
• output y
• wire s1_, s0_, y0, y1, y2, y3 // optional
• not(s1_, s1) not(s0_, s0)
• and(y0, s1_, s0_, x0)
• and(y1, s1_, s0, x1)
• or (y, y0, y1, y2, y3)
• endmodule