23. Open-Drain I2C SDA line

How do you plan to solve it?

`timescale 1ns / 1ps

module i2c_line(
    input drive_low,
    output tri1 sda   // declare output as tri1
);

    // Drive sda low when drive_low is high, else release
    assign sda = (drive_low) ? 1'b0 : 1'bz;

endmodule