ENISR_TX
if (interrupts & ENISR_TX)
unsigned char tx_completed = inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);
if (interrupts & ENISR_TX)
ei_outb_p(ENISR_TX, e8390_base + EN0_ISR); /* Ack intr. */
unsigned char tx_completed = ei_inb_p(e8390_base+EN0_ISR) & (ENISR_TX+ENISR_TX_ERR);