125 lines
4.5 KiB
Groff
125 lines
4.5 KiB
Groff
.\" Copyright (c) 1986, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)vx.4 8.1 (Berkeley) 6/5/93
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.\"
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.Dd June 5, 1993
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.Dt VX 4 tahoe
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.Os
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.Sh NAME
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.Nm vx
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.Nd
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.TN VIOC-X
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communications multiplexor
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.Sh SYNOPSIS
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.Cd "device vx0 at vba? csr 0xfffe0000 vector vackint vcmdrsp vunsol"
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.Sh DESCRIPTION
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A
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.Tn VIOC-X
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provides 16 communication lines with partial modem control,
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adequate for
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.Tn UNIX
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dialup use.
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and may be set to run at any of 16 speeds; see
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.Xr tty 4 .
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.Sh FILES
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.Bl -tag -width /dev/tty[0-9][0-9]xx -compact
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.It Pa /dev/tty[0-9][0-9]
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.It Pa /dev/ttyd[0-9a-f]
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dialups
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.El
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.Sh DIAGNOSTICS
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.Bl -diag
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.It vx%d: vc proc err, ustat %x.
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.Pp
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.It vx%d: vc uqual err, uqual %x.
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.Pp
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.It vx%d: %d exceeds silo size.
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.Pp
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.It vx%d: receiver overrun.
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.Pp
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.It VIOC-BOP no. %d at %x.
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The system identified a vioc supporting the bit oriented protocol.
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The number
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.Em %d
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is the board number assigned by the system
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while the address
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.Em %x
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is the address of the command control
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block for the vioc.
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.It vx%d: unknown type %x.
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The system encountered a vioc of unknown type during autoconfiguration.
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.It vx%d: didn't respond to LIDENT.
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The device did not respond to the configuration command that
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sets the interrupt vectors and port configuration.
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.It vx%d: %s%s, ports %d-%d.
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This is informatory message printed during autoconfiguration
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indicating the type of hardware present the port configuration.
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.It vx%d: no buffers.
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All the command buffers were in use; this indicates the device
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is constipated for some reason.
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.It vx%d: setq overflow.
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An attempt to append a command to an existing command buffer
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failed because the buffer was full or the hardware doesn't
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support this facility.
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.It vx%d: cmd q overflow.
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An attempt to place a new command on the command queue failed
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because it was full. The device is either overloaded or hung
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up for some reason. If this happens, the system tries to
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reset the device to unwedge it.
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.It vx%d INTR ERR type %x v_dcd %x.
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An error was returned by the device in response to some command.
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The command identifier and data carrier detect mask are printed
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followed by the contents of the command buffer in error.
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.It vx%d: vcmdrsp interrupt.
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A command response interrupt was received from a bop (bit oriented
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protocol) vioc. This should not happen.
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.It vx%d: cmdresp debug.
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.Pp
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.It vx%d: vunsol from
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.Tn BOP .
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An unsolicited interrupt was received from a bop vioc. This should
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not happen.
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.It vx%d: interrupt q overflow.
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The queue of pending interrupts to be delivered to the vioc is
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full. This is probably due to the vioc being wedged. The system
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resets the vioc if this occurs.
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.It vx%d: reset....
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The system attempted to reset the vioc.
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.El
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.Sh SEE ALSO
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.Xr tty 4
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.Sh HISTORY
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The
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.Nm
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special file appeared in
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.Bx 4.3 tahoe .
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