Интерактивная система просмотра системных руководств (man-ов)
rc (4)
rc (1) ( Русские man: Команды и прикладные программы пользовательского уровня )
>> rc (4) ( FreeBSD man: Специальные файлы /dev/* )
rc (8) ( FreeBSD man: Команды системного администрирования )
BSD mandoc
NAME
rc
- RISCom/8 multiport card
SYNOPSIS
device isadevice rc
DESCRIPTION
The
RISCom/8
is an eight port
ISARS-232C
communications multiplexer with a built in
RISC
processor.
It uses a block of sixteen
I/O
ports in the range 0x200 to 0x3f0 selectable by on-board
switches or jumpers.
The block must be aligned on a sixteen port boundary.
The jumper-selectable hardware interrupt level may be set to
be detected during system
initialization using settings found in the
/boot/device.hints
file.
This driver is mostly based on the Cirrus Logic CL-CD180 driver.
HARDWARE
The
driver provides support for the
SDL
Communications
RISCom/8
boards.
DIAGNOSTICS
The following driver specific error messages
may be reported:
"rc%d channel%d: interrupt-level buffer overflow"
An internal buffer overflow error has occurred on
the listed channel.
The
driver will need to be reloaded to correct this.
"rc%d: Bad char chan %d"
The channel has obtained a bad set of characters.
"rc%d: Got extra chars chan %d"
The
driver got more characters than expected on the channel shown.
"rc%d: data mismatch chan %d ptr %d (%d != %d)"
Data sent from channel
%d
to the rx buffer was different then expected.
"rc%d: channel %d command timeout, rc.c line: %d"
A command timeout has occurred on the channel, the
src/sys/dev/rc/rc.c
file can be consulted for more information.
