122 lines
3.9 KiB
Groff
122 lines
3.9 KiB
Groff
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.\" Copyright (c) 1980, 1991 Regents of the University of California.
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.\" 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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.\" @(#)vp.4 6.3 (Berkeley) 3/27/91
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.\"
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.Dd March 27, 1991
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.Dt VP 4 vax
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.Os BSD 4
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.Sh NAME
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.Nm vp
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.Nd Versatec interface
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.Sh SYNOPSIS
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.Cd "device vp0 at uba0 csr 0177510 vector vpintr vpintr"
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.Sh DESCRIPTION
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The Versatec printer/plotter is normally used with the
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line printer system.
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This description is designed for those who wish to drive the Versatec directly.
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.Pp
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To use the Versatec yourself, you must realize that you cannot open the
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device,
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.Pa /dev/vp0
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if there is a daemon active.
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You can see if there is a daemon active by doing a
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.Xr lpq 1 ,
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and seeing if there are any files being sent.
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Printing should be turned off using
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.Xr lpc 8 .
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.Pp
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To set the Versatec into plot mode you should include
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.Aq Pa sys/vcmd.h
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and use the
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.Xr ioctl 2
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call
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.Bd -literal -offset indent
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ioctl(fileno(vp), VSETSTATE, plotmd);
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.Ed
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.Pp
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where
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.Em plotmd
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is defined to be
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.Bd -literal -offset indent
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int plotmd[] = { VPLOT, 0, 0 };
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.Ed
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.Pp
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and
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.Em vp
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is the result of a call to
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.Xr fopen
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on stdio.
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When you finish using the Versatec in plot mode you should eject paper
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by sending it a
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.Tn EOT
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after putting it back into print mode, i.e. by
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.Bd -literal -offset indent
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int prtmd[] = { VPRINT, 0, 0 };
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\&...
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fflush(vp);
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ioctl(fileno(vp), VSETSTATE, prtmd);
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write(fileno(vp), "\e04", 1);
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.Ed
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.Sh FILES
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.Bl -tag -width /dev/vp0xx -compact
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.It Pa /dev/vp0
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.El
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.Sh DIAGNOSTICS
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The following error numbers are significant at the
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time the device is opened.
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.Bl -tag -width [ENXIO]
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.It Bq Er ENXIO
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The device is already in use.
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.It Bq Er EIO
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The device is offline.
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.El
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.Sh SEE ALSO
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.Xr lpr 1 ,
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.Xr vtroff 1 ,
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.Xr va 4
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.Xr font 5 ,
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.Xr lpd 8 ,
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.Sh HISTORY
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A
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.Nm
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driver appeared in
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.At v7 .
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.Sh BUGS
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The configuration part of the driver assumes that the device is set up to
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vector print mode through 0174 and plot mode through 0200.
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As the configuration program can't be sure
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which vector interrupted at boot time,
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we specify that it has two interrupt vectors,
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and if an interrupt comes through 0200 it is reset to 0174.
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This is safe for devices with one or two vectors at these two addresses.
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Other configurations with 2 vectors may require changes in the driver.
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