feat: Added NetBSD man pages

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+.\"	$NetBSD: cpi.4,v 1.8 2017/02/18 22:39:01 wiz Exp $
+.\"
+.\" Copyright (c) 2008 Hauke Fath.  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 ``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 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.
+.\"
+.Dd February 17, 2017
+.Dt CPI 4 mac68k
+.Os
+.Sh NAME
+.Nm cpi
+.Nd parallel printer driver for Creative Systems Inc. Hurdler CPI Nubus card
+.\"
+.Sh SYNOPSIS
+.Cd "cpi* at nubus? flags 0x1"
+.\"
+.Sh DESCRIPTION
+The
+.Nm
+interface provides access to parallel printer ports.
+.\"
+.Sh CONFIGURATION
+The
+.Nm
+driver supports the following
+.Sy flags
+for use in
+.Xr config 1
+files:
+.Pp
+.Bl -tag -compact -width "bits 16-23:"
+.It bit 0 :
+use the CIO counters 1 and 2 as a 32 bit
+.Xr timecounter 9 .
+.El
+.\"
+.Sh HARDWARE
+The
+.Nm
+interface supports the Creative Systems Inc. Hurdler CPI Nubus card,
+which is based on a Zilog Z8536 CIO.
+.\"
+.Pp
+The parallel port on the Hurdler CPI card is wired as follows:
+.Bl -column "/STROBE" "Page error" "SubD pin" "Z8536 pin" "Z8536 signal"
+.It Sy "Signal"		SubD pin	Z8536 pin	Z8536 signal
+.It /STROBE	Strobe	1	22	PC3
+.It D0		2	33	PA0
+.It \&D1		3	32	PA1
+.It D2		4	31	PA2
+.It D3		5	30	PA3
+.It D4		6	29	PA4
+.It D5		7	28	PA5
+.It D6		8	27	PA6
+.It D7		9	26	PA7
+.It /ACK		10	21 + 11	PC2 + PB3
+.It BUSY		11	19 + 14	PC0 + PB6
+.It PE	Paper Error	12	20	PC1
+.It SEL	Select	13	13	PB5
+.It /AUTOFD	Auto Feed	14	12	PB4
+.It /FAULT		15	9	PB1
+.It /RESET		16	8	PB0
+.It /SELIN	Select \&In	17	10	PB2
+.El
+.Pp
+The Z8536 INT line (pin 24) is wired to PB7 (pin 15).
+.\"
+.Sh SEE ALSO
+.Xr lpt 4 ,
+.Xr mac68k/autoconf 4 ,
+.Xr nubus 4 ,
+.Xr printcap 5 ,
+.Xr timecounter 9
+.Pp
+.Tn IEEE Standard 1284-1994
+.\" .Sh STANDARDS
+.\"
+.Sh HISTORY
+.Nm
+first appeared in
+.Nx 5.0 .
+.\"
+.Sh AUTHORS
+The
+.Nm
+driver was written by
+.An Hauke Fath
+.Aq hauke@NetBSD.org .
+.\"
+.Sh CAVEATS
+The Hurdler CPI Nubus card does not use a TTL buffer to
+drive the parallel interface.
+Instead, the card's Z8536 CIO drives the printer port directly.
+Printers terminating the parallel interface with less
+than 2 kOhms may cause permanent damage to the Z8536 CIO.