| IOAT(4) | Device Drivers Manual | IOAT(4) | 
ioat —
  
  ioat0 at isa? port 0x220 irq 5
  
  com2 at ioat? slave ?
  
  com3 at ioat? slave ?
  
  com4 at ioat? slave ?
  
  com5 at ioat? slave ?
  
  com6 at ioat? slave ?
  
  com7 at ioat? slave ?
ioat driver provides support for BOCA Research
  IOAT66 boards that multiplex together up to six EIA RS-232C (CCITT V.28)
  communications interfaces.
Each ioat device is the master device for
    up to six com devices. The kernel configuration
    specifies these com devices as slave devices of the
    ioat device, as shown in the synopsis. The slave ID
    given for each com device determines which bit in
    the interrupt multiplexing register is tested to find interrupts for that
    device. The port specification for the ioat device
    is used to compute the base addresses for the com
    subdevices. The port for the interrupt multiplexing register is not
    programmable.
ioat driver was adapted from the boca driver by
  Michael Richardson.
| January 24, 2000 | NetBSD 10.0 |