23. Open-Drain I2C SDA line

How do you plan to solve it?

module i2c_line (
input wire drive_low,
output tri1 sda      //tri1 = pull up debil => si no se asigna valor 1
);

assign sda = drive_low ? 1'b0 : 1'bz; 
// Esto permite que varios usuarios compartan la linea sin interferirse 

endmodule