NAME
ioat —
multiplexing serial communications
interface
SYNOPSIS
For 6-port BOCA IOAT66 board:
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 ?
DESCRIPTION
Theioat 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.
FILES
- /dev/tty??
SEE ALSO
HISTORY
The ioat driver was adapted from the boca
driver by Michael Richardson.