168 lines
5.0 KiB
Groff
168 lines
5.0 KiB
Groff
.\" $NetBSD: ite.4,v 1.4 1997/10/19 12:57:11 mrg Exp $
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.\"
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.\" Copyright (c) 1990, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" the Systems Programming Group of the University of Utah Computer
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.\" Science Department.
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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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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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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.\" from: @(#)ite.4 8.1 (Berkeley) 6/9/93
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.\"
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.Dd June 9, 1993
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.Dt ITE 4 hp300
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.Os
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.Sh NAME
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.Nm ite
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.Nd
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.Tn HP
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Internal Terminal Emulator
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.Sh DESCRIPTION
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.Tn TTY
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special files of the form ``ttye?''
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are interfaces to the
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.Tn HP ITE
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for bit-mapped displays as implemented under
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.Bx .
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An
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.Tn ITE
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is the main system console on most
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.Tn HP300
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workstations and
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is the mechanism through which a user communicates with the machine.
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If more than one display exists on a system,
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any or all can be used as
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.Tn ITE Ns s
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with the limitation that only the first
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one opened will have a keyboard (since only one keyboard is supported).
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.Pp
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.Tn ITE
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devices use the
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.Tn HP-UX
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.Sq Li 300h
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.Xr termcap 5
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or
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.Xr terminfo 5
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entries.
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However, as currently implemented,
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the
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.Tn ITE
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does not support the full range of
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.Tn HP-UX
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capabilities for this device.
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Missing are multiple colors, underlining, blinking, softkeys,
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programmable tabs, scrolling memory and keyboard arrow keys.
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The keyboard does not have any of the international character
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support of
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.Tn HP Ns 's
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.Tn NLS
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system.
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It does use the left and right
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.Em extend char
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keys as meta keys, in that it will set the eighth bit of the character code.
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.Pp
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Upon booting, the kernel will first look for an
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.Tn ITE
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device
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to use as the system console
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.Pq Pa /dev/console .
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If a display exists at any hardware address, it will be the console.
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The kernel looks for, in order:
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a 98544, 98545, or 98547 Topcat display,
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a 98700 Gatorbox at a supported address (see
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.Xr gb 4 ) ,
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or a 98720 Renaissance at a supported address (see
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.Xr rb 4 ) .
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Currently there is no
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.Tn ITE
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support for the
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98548, 98549, 98550 and 98556 boards.
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.Pp
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When activated as an
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.Tn ITE
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(special file opened),
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all displays go through a standard initialization sequence.
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The frame buffer is cleared,
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the
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.Tn ROM
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fonts are unpacked and loaded into off-screen storage and
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a cursor appears.
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The
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.Tn ITE
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initialization routine also sets the colormap entry used to white.
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Variable colors are not used, mainly for reasons of simplicity.
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The font pixels are all set to 0xff and the colormap entry corresponding
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to all planes is set to R=255, G=255 and B=255.
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The actual number of planes used to display the characters depends
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on the hardware installed.
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Finally, if the keyboard
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.Tn HIL
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device is not already assigned to another
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.Tn ITE
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device, it is placed in ``cooked'' mode and assigned to this
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.Tn ITE .
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.Pp
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On most systems,
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a display is used both as an
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.Tn ITE
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.Pf ( Pa /dev/ttye?
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aka
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.Pa /dev/console )
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and as a graphics device
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.Pq /dev/grf? .
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In this environment,
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there is some interaction between the two uses that should be noted.
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For example, opening
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.Pa /dev/grf0
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will deactivate the
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.Tn ITE ,
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that is, write over whatever may be on the
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.Tn ITE
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display.
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When the graphics application is finished and
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.Pa /dev/grf0
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closed,
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the
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.Tn ITE
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will be reinitialized with the frame buffer cleared
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and the
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.Tn ITE
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colormap installed.
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.Sh DIAGNOSTICS
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None under
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.Bx .
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.Sh SEE ALSO
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.Xr grf 4 ,
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.Xr hil 4 ,
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.Xr gb 4 ,
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.Xr rb 4 ,
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.Xr tc 4
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