isa_inb
vector = isa_inb(IO_ICU1);
vector = isa_inb(IO_ICU2);
if (isa_inb(iobase + BT_INTR_PORT) & BT_INTR_ANYINTR)
sts = isa_inb(iobase + BT_STAT_PORT);
while ((isa_inb(iobase + BT_STAT_PORT)) & BT_STAT_DF)
isa_inb(iobase + BT_DATA_PORT);
sts = isa_inb(iobase + BT_STAT_PORT);
sts = isa_inb(iobase + BT_STAT_PORT);
*obuf++ = isa_inb(iobase + BT_DATA_PORT);
sts = isa_inb(iobase + BT_INTR_PORT);
sts = isa_inb(iobase + BT_INTR_PORT);
sts = isa_inb(iobase + BHA_STAT_PORT);
sts = isa_inb(iobase + BT_STAT_PORT);
sts = isa_inb(iobase + BT_EXTGEOM_PORT);
isa_inb(IO_ICU2 + PIC_OCW1);
isa_inb(IO_ICU1 + PIC_OCW1);
isa_inb(IO_ICU1 + PIC_OCW1);
isa_inb(IO_ICU2 + PIC_OCW1);
isa_outb(PITAUX_PORT, isa_inb(PITAUX_PORT) & ~PIT_SPKR);
isa_outb(PITAUX_PORT, isa_inb(PITAUX_PORT) | PIT_SPKR);
uint8_t isa_inb(uint32_t);
irq = isa_inb(IO_ICU1) & 0x07;
irq = (isa_inb(IO_ICU2) & 0x07) + 8;
elcr[0] = isa_inb(IO_ELCR1);
elcr[1] = isa_inb(IO_ELCR2);
isa_outb(PITAUX_PORT, isa_inb(PITAUX_PORT) & ~PIT_SPKR);
isa_outb(PITAUX_PORT, isa_inb(PITAUX_PORT) | PIT_SPKR); /* enable counter 2 */