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-.\" $FreeBSD$
-.Dd December 2, 1994
-.Dt CXCONFIG 8
-.Os
-.Sh NAME
-.Nm cxconfig
-.Nd channel options management utility for Cronyx-Sigma adapter
-.Sh SYNOPSIS
-.Nm
-.Op Fl a
-.Op Ar <channel> Op Ar <option>...
-.Sh DESCRIPTION
-The
-.Nm
-utility is used for configuring the channel options of
-the Cronyx-Sigma adapter.
-.Pp
-To change channel options the channel should be free: the corresponding
-network interface in ``down'' state, the asynchronous terminal device
-.Pa /dev/tty*
-closed.
-Generally, the channel options are set up during the operating
-system startup, for example from the
-.Pa /etc/rc
-file.
-.Pp
-Note, that not all options have a sense for every particular
-case, and an attempt to set some of them can hang up the channel or
-the whole adapter.
-.Pp
-The following option is available:
-.Bl -tag -width indent
-.It Fl a
-Display full information.
-.El
-.Sh "Channel options"
-.Bl -tag -width 10n
-.It ispeed=#
-Set the receiver baud rate to the number given.
-The maximal value is 256000 bits/sec.
-In the synchronous mode the receiver baud rate is significant
-only when DPLL mode is used.
-.It ospeed=#
-Set the transmitter baud rate to the number given.
-The maximal value is 256000 bits/sec.
-In the synchronous mode the transmitter baud rate is significant
-only in the case of the internal clock source.
-If receiver and transmitter have equal data rate, then it could
-be set by specifying only the numerical argument.
-.It async
-Set the asynchronous channel mode.
-.It "hdlc, bisync, bsc, x.21, x21
-Set the synchronous channel mode: HDLC, Bisync (BSC) or X.21.
-.It ppp
-Set the link-level protocol: PpP/HDLC.  The built-in simplified synchronous PPP
-implementation is used (see RFC-1548, RFC-1549).
-.It cisco
-Set the link-level protocol: Cisco/HDLC (see RFC-1547).
-This protocol is intended for compatibility with old models of Cisco routers,
-and with early versions of
-.Tn BSD/386
-drivers.
-The extensive usage of this protocol is not recommended.
-.It ext
-Use the external link-level protocol suite (for
-.Tn BSD/386
-only).
-.It "+keepalive, -keepalive"
-Enable the automatic line state control sub-protocol.
-This setting is not significant when the external link-level protocol is used.
-.It "+autorts, -autorts"
-Enable the automatic RTS signal control.
-When enabled, the RTS signal goes up only when both halves of
-the receiver ring buffer are free and ready for receive,
-and goes down when one or both buffers are busy.
-.It "port=rs232, port=rs449, port=v35
-Set the zero channel hardware interface type.
-.El
-.Sh "Common options"
-.Bl -tag -width 10n
-.It "nrz, nrzi, manchester"
-Set the data line signal encoding.
-In the case of
-.Em NRZ
-encoding the zero bit is transmitted by the zero signal
-level, the one bit - by the positive signal level.
-In the case of
-.Em NRZI
-encoding the zero bit is transmitted by the change of
-the signal level, the one bit - by the constant signal level.
-In the case of
-.Em Manchester
-encoding the zero bit is encoded as 01 value,
-the one bit - as 10 value.
-.It "+dpll, -dpll"
-Enable the digital phase locked loop mode (DPLL).
-When enabled, the receiver timing clock signal
-is derived from the received data.
-.It "+lloop, -lloop"
-Set the local loopback mode.
-.It "+extclock, -extclock"
-Set the timing clock source of synchronous channels.  There are
-two possible variants:
-.Em "external clock"
-source or
-.Em "internal clock"
-generation.
-.Pp
-.Em "External clock"
-mode is the most common method for connecting
-external modem hardware.  In this mode the external timing
-signal is received on TXCIN pin of the connector, and it is
-used as a synchronization clock for transmitting data (TXD).
-.Pp
-In the case of
-.Em "internal clock"
-mode the transmitted data (TXD)
-are synchronized using the internal on-board timing generator,
-the internally generated timing signal is driven on the TXCOUT
-pin, and the signal on the TXCIN pin is ignored.  This mode
-is used for direct terminal-to-terminal communication,
-e.g. for connecting two computers together in a synchronous mode
-via relatively short cable.  This method should also be used
-for testing channels with an external loopback connector.
-.It fifo=#
-FIFO threshold level setup for receiver and transmitter.
-.It rfifo=#
-Hardware RTS/CTS flow control FIFO threshold setup.
-.It "+ctsup, -ctsup"
-Enable/disable interrupts on CTS (Clear To Send) signal setup (0 to 1 transition).
-.It "+ctsdown, -ctsdown"
-Enable/disable interrupts on CTS (Clear To Send) signal clear (1 to 0 transition).
-.It "+cdup, -cdup"
-Enable/disable interrupts on CD (Carrier Detect) signal setup (0 to 1 transition).
-.It "+cddown, -cddown"
-Enable/disable interrupts on CD (Carrier Detect) signal clear (1 to 0 transition).
-.It "+dsrup, -dsrup"
-Enable/disable interrupts on DSR (Data Set Ready) signal setup (0 to 1 transition).
-.It "+dsrdown, -dsrdown"
-Enable/disable interrupts on DSR (Data Set Ready) signal clear (1 to 0 transition).
-.El
-.Sh "Asynchronous mode options"
-.Bl -tag -width 10n
-.It cs#
-Select character size: 5, 6, 7 or 8 bits.
-.It "parodd, pareven
-Parity mode: odd or even.
-.It "+ignpar, -ignpar
-Disable/enable parity detection.
-.It nopar
-Disable parity bit generation.
-.It forcepar
-Force parity: even - 0, odd - 1.
-.It "stopb1, stopb1.5, stopb2
-Use 1 or 1.5 or 2 stop bits per character.
-.It "+dsr, -dsr"
-Use the DSR input signal as receiver enable/disable.
-.It "+cts, -cts"
-Use the CTS input signal as transmitter enable/disable.
-.It "+rts, -rts"
-Drive the RTS output signal as transmitter ready.
-.It "+rloop, -rloop"
-Set the remote loopback mode.
-.It "+etc, -etc"
-Enable the embedded transmit commands mode.
-.It "+ixon, -ixon"
-Enable the hardware XON/XOFF flow control support.
-.It "+ixany, -ixany"
-Use the hardware IXANY mode support.
-.It "+sdt, -sdt"
-Detect the spec. characters SCHR1 and SCHR2 in the receive data.
-.It "+flowct, -flowct"
-Receive the flow control spec. characters as data.
-.It "+rdt, -rdt"
-Detect the spec. characters in range SCRL..SCRH in the receive data.
-.It "+exdt, -exdt"
-Detect the spec. characters SCHR3 and SCHR4 in the receive data.
-.It "parintr, parnull, parign, pardisc, parffnull
-Action on parity errors:
-.Pp
-.Bl -tag -width parffnullxxx -compact
-.It Mode
-Action
-.It parintr
-Generate the receiver error interrupt
-.It parnull
-Input the NUL character
-.It parign
-Ignore the error, receive as good data
-.It pardisc
-Ignore the character
-.It parffnull
-Input the sequence <0xFF, NUL, character>
-.El
-.It "brkintr, brknull, brkdisc
-Line break state action:
-.Pp
-.Bl -tag -width parffnullxxx -compact
-.It Mode
-Action
-.It brkintr
-Generate the receiver error interrupt
-.It brknull
-Input the NUL character
-.It brkdisc
-Ignore the line break state
-.El
-.It "+inlcr, -inlcr"
-Translate received NL characters to CR.
-.It "+icrnl, -icrnl"
-Translate received CR characters to NL.
-.It "+igncr, -igncr"
-Ignore received CR characters.
-.It "+ocrnl, -ocrnl"
-Translate transmitted CR characters to NL.
-.It "+onlcr, -onlcr"
-Translate transmitted NL characters to CR.
-.It "+fcerr, -fcerr"
-Process (don't process) the characters, received with errors,
-for special character/flow control matching.
-.It "+lnext, -lnext"
-Enable the LNEXT character option: the character following
-the LNEXT character is not processed for special character/flow
-control matching.
-.It "+istrip, -istrip"
-Strip input characters to seven bits.
-.It schr1=#
-The XON flow control character value.
-.It schr2=#
-The XOFF flow control character value.
-.It schr3=#
-The SCHR3 spec. character value.
-.It schr4=#
-The SCHR4 spec. character value.
-.It "scrl=#, scrh=#
-The spec. character range (inclusive).
-.It lnext=#
-The LNEXT spec. character value.
-.El
-.Sh "HDLC mode options"
-.Bl -tag -width 10n
-.It if#
-The minimum number of flags transmitted before a frame is started.
-.It noaddr
-No frame address recognition.
-.It "addrlen1, addrlen2"
-Address field length: 1 or 2 bytes.
-.It "addr1, addr2"
-Addressing mode: 4x1 bytes or 2x2 bytes.
-Registers RFAR1..RFAR4 should contain the address to be matched.
-.It "+clrdet, -clrdet"
-Enable/disable clear detect for X.21 protocol support.
-.It "+dsr, -dsr"
-Use the DSR input signal as receiver enable/disable.
-.It "+cts, -cts"
-Use the CTS input signal as transmitter enable/disable.
-.It "+rts, -rts"
-Drive the RTS output signal as transmitter ready.
-.It "+fcs, -fcs"
-Enable/disable the frame checksum generation and checking.
-.It "crc-16, crc-v.41
-Select the CRC polynomial: CRC-16 (x^16+x^15+x^2+1)
-or CRC V.41 (x^16+x^12+x^5+1).
-.It "fcs-crc-16, fcs-v.41
-Frame checksum preset: all zeros (CRC-16) or all ones (CRC V.41).
-.It "+crcinv, -crcinv"
-Invert (ie. CRC V.41) or don't invert (ie. CRC-16) the transmitted frame checksum.
-.It "+fcsapd, -fcsapd"
-Pass the received CRC to the host at the end of receiver data buffer.
-.It "idlemark, idleflag
-Idle mode: idle in mark (transmit all ones) or idle in flag (transmit flag).
-.It "+syn, -syn"
-Enable/disable sending pad characters before sending flag when coming out
-of the idle mode.
-.It pad#
-The number of synchronous characters sent (0..4).
-.It "syn=0xaa, syn=0x00
-Send sync pattern.
-.It "rfar1=#, rfar2=#, rfar3=#, rfar4=#
-Frame address registers for address recognition.
-.El
-.Sh EXAMPLES
-Set up the channel 7 of the adapter Sigma-400 under
-.Fx .
-Physical 4-wire leased line with Zelax+ M115 short-range modems.
-Synchronous mode, 128000 bits/sec, interface RS-232,
-protocol PpP/HDLC without keepalive support, NRZI encoding,
-DPLL mode, no flow control:
-.Bd -literal
-cxconfig cx7 128000 hdlc ppp -keepalive nrzi -cts +dpll -extclock
-ifconfig cx7 158.250.244.2 158.250.244.1 up
-.Ed
-.Pp
-Set up the channel 0 of the adapter Sigma-100 under
-.Fx .
-Attachment to the near computer by short cable, internal clock source.
-Synchronous mode, 256000 bits/sec, interface RS-232,
-protocol Cisco/HDLC with keepalive support:
-.Bd -literal
-cxconfig cx0 hdlc 256000 cisco +keepalive -extclock
-ifconfig cx0 200.1.1.1 200.1.1.2 up
-.Ed
-.Pp
-Set up the channel 1 of the adapter Sigma-840 under
-.Tn BSD/386 .
-Synchronous 64 kbit/sec leased line, external clock source.
-Synchronous mode, interface V.35, external protocol suite:
-.Bd -literal
-cxconfig cx1 hdlc ext
-ifconfig cx1 193.124.254.50 193.124.254.49 multicast up
-.Ed
-.Pp
-Set up the channel 0 of the adapter Sigma-840 under
-.Fx .
-Attachment to the Cisco-4000 router by null-modem cable, internal clock source.
-Synchronous mode, 64000 bits/sec, interface RS-232,
-protocol PpP/HDLC with keepalive support and flow control,
-LCP and IPCP protocols (see RFC-1548 and RFC-1332) debug tracing enabled:
-.Bd -literal
-cxconfig cx0 hdlc 64000 port=rs232 ppp +keepalive -extclock +cts
-ifconfig cx0 100.0.0.2 100.0.0.1 debug up
-.Ed
-.Sh FILES
-.Bl -tag -width /dev/cronyx -compact
-.It Pa /dev/cronyx
-the special device file for adapter options management
-.El
-.Sh SEE ALSO
-.Xr cx 4