2010-01-24 19:11:08 +00:00
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.\" Copyright (c) 2010, Joerg Wunsch
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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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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.\" $FreeBSD$
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.\"
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.Dd January 24, 2010
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.Dt PCII 4
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.Os
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.Sh NAME
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.Nm pcii
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.Nd National Instruments PCIIA GPIB controller driver
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.Sh SYNOPSIS
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.Cd "device pcii"
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.Pp
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In
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.Pa /boot/device.hints :
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.Cd hint.pcii.0.at="isa"
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.Cd hint.pcii.0.port="0x2e1"
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.Cd hint.pcii.0.irq="7"
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.Cd hint.pcii.0.drq="1"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides support for driving an IEEE-488 bus, also called
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IEC-625 (or just "IEC bus"), or HP-IB (Hewlett Packard Instrument
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Bus), or GPIB (General Purpose Instrument Bus).
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The driver supports National Instruments PCIIA cards (sometimes
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2010-08-06 14:33:42 +00:00
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also referred to as PC2A) and compatibles.
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2010-01-24 19:11:08 +00:00
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These cards use a NEC \(mcPD7210 controller IC as the main
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interface between the host computer and the instrument bus.
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.Ss IO memory space layout
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The PCIIA cards use a very specific IO memory space allocation layout.
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The address bits A0 through A9 (which have traditionally been the only
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address bits evaluated on IBM PC XT extension cards) are hardwired to
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address 0x2e1.
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Bits A10 through A12 are used by the \(mcPD7210 register select lines.
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This makes the individual 7210 registers being 0x400 bytes apart in the
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ISA bus address space.
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Address bits A13 and A14 are compared to a DIP switch setting on the
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card, allowing for up to 4 different cards being installed (at base
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addresses 0x2e1, 0x22e1, 0x42e1, and 0x62e1, respectively).
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A15 has been used to select an optional on-board time-of-day clock
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chip (MM58167A) on the original PCIIA rather than the \(mcPD7210
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(which is not implemented on later boards and clones).
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Finally, the IO addresses 0x2f0 ... 0x2f7 are used for a
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.Em special interrupt handling feature
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(re-enable interrupts so the IRQ can be shared), where actually only
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address 0x2f0 plus the actual IRQ level is required for each card.
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Some clones do not appear to require this special IRQ handling, and
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are thus likely to not support the shared IRQ feature.
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.Pp
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Only the base address of the card needs to be specified in the ISA
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device hints; the driver takes care to derive all other IO addresses
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needed during the probe phase.
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.Ss Supported cards
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The following cards are known to be supported:
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.Bl -bullet -offset indent
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.It
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B&C Microsystems PC488A-0
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.It
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National Instruments GPIB-PCII/PCIIA (in PCIIa mode)
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.It
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Axiom AX5488
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.El
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.Sh SEE ALSO
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2010-02-01 21:01:20 +00:00
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.Xr gpib 3 ,
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2010-01-24 19:11:08 +00:00
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.Xr gpib 4 ,
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.Xr device.hints 5
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.Sh HISTORY
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The
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.Nm
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driver was written by Poul-Henning Kamp, and first appeared in
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.Fx 5.4 .
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.Sh AUTHORS
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This manual page was written by
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.An J\(:org Wunsch .
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