NAME
tcom —
multiplexing serial
communications interface
SYNOPSIS
For 4-port TC-400 series boards:
tcom0 at isa? port 0x100 irq 5
com2 at tcom? slave ?
com3 at tcom? slave ?
com4 at tcom? slave ?
com5 at tcom? slave ?
For 8-port TC-800 series boards:
tcom0 at isa? port 0x100 irq 5
com2 at tcom? slave ?
com3 at tcom? slave ?
com4 at tcom? slave ?
com5 at tcom? slave ?
com6 at tcom? slave ?
com7 at tcom? slave ?
com8 at tcom? slave ?
com9 at tcom? slave ?
DESCRIPTION
The
tcom driver provides support for the Byte Runner
Technologies TC-400 and TC-800 series boards that multiplex together up to
four or eight EIA RS-232C (CCITT V.28) communications interfaces.
Each
tcom device is the master device for up to eight
com devices. The kernel configuration specifies these
com devices as slave devices of the
tcom
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
tcom device is used to compute the
base addresses for the
com subdevices and the port for the
interrupt multiplexing register.
Not all possible configuration options are currently supported (for example,
speeds beyond 115200 baud are not currently supported).
FILES
-
-
- /dev/tty??
-
SEE ALSO
com(4)
HISTORY
The
tcom driver was written by Jukka Marin.