TCOM(4) BSD Kernel Interfaces Manual TCOM(4)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 subde‐
vices and the port for the interrupt multiplexing register.
Not all possible configuration options are currently supported (for exam‐
ple, speeds beyond 115200 baud are not currently supported).
FILES
/dev/tty??
SEE ALSOcom(4)HISTORY
The tcom driver was written by Jukka Marin.
BSD May 20, 1998 BSD