outb (IER_REG, 0); /* Turn off all interrupts. */
outb (FCR_REG, 0); /* Disable FIFO. */
set_serial (115200); /* 115.2 kbps, N-8-1. */
- outb (MCR_REG, MCR_OUT2); /* Turn on OUT2 output line. */
+ outb (MCR_REG, MCR_OUT2); /* Required to enable interrupts. */
intq_init (&txq);
mode = POLL;
}