com_iir
(void) INB(com_iir);
(void)bus_space_read_1(bst, bsh, com_iir);
iir = bus_space_read_1(bst, bsh, com_iir);
*((volatile u_int8_t *)(addr + com_iir)) = 0;
ubtmp2 = *((volatile u_int8_t *)(addr + com_iir));
stat = REGREAD_1(VR4181_SIU_ADDR, com_iir);
inb(combase + com_iir);
inb(combase + com_iir);
inb(combase + com_iir);
stat = KCOM_GETBYTE(com_iir);
stat = KCOM_GETBYTE(com_iir);
[COM_REG_IIR] = com_iir,