1.\" $NetBSD: clockport.4,v 1.10 2017/02/17 22:24:45 christos Exp $ 2.\" 3.\" Copyright (c) 2012 The NetBSD Foundation, Inc. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to The NetBSD Foundation 7.\" by Radoslaw Kujawa. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions 11.\" are met: 12.\" 1. Redistributions of source code must retain the above copyright 13.\" notice, this list of conditions and the following disclaimer. 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in the 16.\" documentation and/or other materials provided with the distribution. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28.\" POSSIBILITY OF SUCH DAMAGE. 29.\" 30.Dd February 17, 2017 31.Dt CLOCKPORT 4 amiga 32.Os 33.Sh NAME 34.Nm clockport 35.Nd introduction to clockport bus support and drivers 36.Sh SYNOPSIS 37.Cd "clockport* at a1k2cp0" 38.Cd "clockport* at gencp?" 39.Sh DESCRIPTION 40Clockport is a general purpose non-autoconfiguring expansion bus, originally 41present on the Amiga 1200, as a part of P9 memory connector. 42.Sh SUPPORTED DEVICES 43The 44.Nx 45includes the following clockport drivers: 46.Bl -tag -offset indent 47.It Xr com 4 48Individual Computers SilverSurfer 16C550-based serial port. 49.\" .It Xr flipper 4 50.\" Individual Computers Delfina Flipper / Delfina 1200. 51.El 52.Sh CODE REFERENCES 53The 54.Nm 55interface and drivers for it are implemented within the 56.Pa sys/arch/amiga/clockport 57directory. 58.Sh SEE ALSO 59.Xr amiga/a1k2cp 4 60.\" .Xr gencp 4 61.Sh HISTORY 62The 63.Nm 64subsystem appeared in 65.Nx 7.0 . 66.Sh AUTHORS 67.An -nosplit 68The 69.Nm 70subsystem was written by 71.An Radoslaw Kujawa Aq Mt radoslaw.kujawa@gmail.com . 72.Sh CAVEATS 73Clockport performance is very low, even by Amiga standards. 74.Pp 75Probing the hardware on clockport might be unreliable. 76