Deorbit the IEEE-488/GPIB support.

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diff --git a/share/man/man4/pcii.4 b/share/man/man4/pcii.4
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-.\" Copyright (c) 2010, Joerg Wunsch
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd January 24, 2010
-.Dt PCII 4
-.Os
-.Sh NAME
-.Nm pcii
-.Nd National Instruments PCIIA GPIB controller driver
-.Sh SYNOPSIS
-.Cd "device pcii"
-.Pp
-In
-.Pa /boot/device.hints :
-.Cd hint.pcii.0.at="isa"
-.Cd hint.pcii.0.port="0x2e1"
-.Cd hint.pcii.0.irq="7"
-.Cd hint.pcii.0.drq="1"
-.Sh DESCRIPTION
-The
-.Nm
-driver provides support for driving an IEEE-488 bus, also called
-IEC-625 (or just "IEC bus"), or HP-IB (Hewlett Packard Instrument
-Bus), or GPIB (General Purpose Instrument Bus).
-The driver supports National Instruments PCIIA cards (sometimes
-also referred to as PC2A) and compatibles.
-These cards use a NEC \(mcPD7210 controller IC as the main
-interface between the host computer and the instrument bus.
-.Ss IO memory space layout
-The PCIIA cards use a very specific IO memory space allocation layout.
-The address bits A0 through A9 (which have traditionally been the only
-address bits evaluated on IBM PC XT extension cards) are hardwired to
-address 0x2e1.
-Bits A10 through A12 are used by the \(mcPD7210 register select lines.
-This makes the individual 7210 registers being 0x400 bytes apart in the
-ISA bus address space.
-Address bits A13 and A14 are compared to a DIP switch setting on the
-card, allowing for up to 4 different cards being installed (at base
-addresses 0x2e1, 0x22e1, 0x42e1, and 0x62e1, respectively).
-A15 has been used to select an optional on-board time-of-day clock
-chip (MM58167A) on the original PCIIA rather than the \(mcPD7210
-(which is not implemented on later boards and clones).
-Finally, the IO addresses 0x2f0 ... 0x2f7 are used for a
-.Em special interrupt handling feature
-(re-enable interrupts so the IRQ can be shared), where actually only
-address 0x2f0 plus the actual IRQ level is required for each card.
-Some clones do not appear to require this special IRQ handling, and
-are thus likely to not support the shared IRQ feature.
-.Pp
-Only the base address of the card needs to be specified in the ISA
-device hints; the driver takes care to derive all other IO addresses
-needed during the probe phase.
-.Ss Supported cards
-The following cards are known to be supported:
-.Bl -bullet -offset indent
-.It
-B&C Microsystems PC488A-0
-.It
-National Instruments GPIB-PCII/PCIIA (in PCIIa mode)
-.It
-Axiom AX5488
-.El
-.Sh SEE ALSO
-.Xr gpib 3 ,
-.Xr gpib 4 ,
-.Xr device.hints 5
-.Sh HISTORY
-The
-.Nm
-driver was written by Poul-Henning Kamp, and first appeared in
-.Fx 5.4 .
-.Sh AUTHORS
-This manual page was written by
-.An J\(:org Wunsch .