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.\" $OpenBSD: cbus.4,v 1.4 2015/03/05 21:35:57 aoyama Exp $
.\"
.\" Copyright (c) 2014 Kenji Aoyama.
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.Dd $Mdocdate: March 5 2015 $
.Dt CBUS 4 luna88k
.Os
.Sh NAME
.Nm cbus
.Nd NEC PC-9801 extension board slot bus
.Sh SYNOPSIS
.Cd "cbus0 at mainbus0"
.Sh DESCRIPTION
.Nm
is a bus interface of "NEC PC-9801 extension board slot" (so-called
"C-bus" in Japan) on LUNA-88K2.
The original LUNA-88K does not have this slot.
.Sh LIST OF DEVICES
The devices currently supported on
.Nm
are:
.Pp
.Bl -tag -width 10n -offset 3n -compact
.It Xr necsb 4
NEC PC-9801-86 sound board
.It Xr pcexmem 4
NEC PC-9801 extension board slot
.It Xr pcmcia 4
PCMCIA (PC Card) support
.El
.Sh SEE ALSO
.Xr intro 4
.Sh HISTORY
The
.Nm
bus interface first appeared in
.Ox 5.7 .
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