Example of if-else Statement - 2024.1 English

Vivado Design Suite User Guide: Synthesis (UG901)

Document ID
UG901
Release Date
2024-05-30
Version
2024.1 English

This coding example uses an if-else statement to describe a Multiplexer.

module mux4 (sel, a, b, c, d, outmux);
input [1:0] sel;
input [1:0] a, b, c, d;
output [1:0] outmux;
reg [1:0] outmux;

always @(sel or a or b or c or d)
begin
if (sel[1])
if (sel[0])
outmux = d;
else
else
outmux = c;
if (sel[0])
outmux = b;
end endmodule
else
outmux = a;