Tribblix: manual page: apple2.6

apple2(6) XScreenSaver manual apple2(6)

NAME

apple2 - Apple ][ display emulator

SYNOPSIS

apple2 [--display host:display.screen] [--foreground color]
[--background color] [--window] [--root] [--window-id number][--mono]
[--install] [--visual visual] [--program command to run] [--basic]
[--slideshow] [--text] [--meta] [--esc] [--bs] [--del] [--fast]
[--fps]

DESCRIPTION

The apple2 program simulates an original Apple ][ Plus computer in
all its 1979 glory. It also reproduces the appearance of display on a
color television set of the period.

There are 3 modes: basic, slideshow, and text. Normally it chooses a
mode randomly, but you can override with the --basic, --slideshow, or
--text options.

In basic mode a simulated user types in a Basic program and runs it.

In slideshow mode it chooses a number of images from the image source
you configured into XScreenSaver and displays them within the
limitations of the Apple ][ display hardware. With only 6 available
colors, you can only make out the general shape of the pictures.

In text mode it displays the output of a command or the contents of a
file or URL (via the default xscreensaver-text(6) program, which can
be overridden with --program).

In text mode, it is also a fully functional (if anachronistic) vt100
terminal emulator.

OPTIONS

apple2 accepts the following options:

--window
Draw on a newly-created window. This is the default.

--root Draw on the root window.

--window-id number
Draw on the specified window.

--mono If on a color display, pretend we're on a monochrome display.

--install
Install a private colormap for the window.

--visual visual
Specify which visual to use. Legal values are the name of a
visual class, or the id number (decimal or hex) of a specific
visual.

--basic Choose basic mode

--slideshow
Choose slideshow mode

--text Choose text mode

--program sh-command
In text mode, the command to run to generate the text to
display. This option may be any string acceptable to /bin/sh.
The program will be run at the end of a pipe, and any
characters that it prints to stdout will be printed on the
Apple ][ display. If the program exits, it will be launched
again after 3 seconds. Default: xscreensaver-text(6).

In text mode, apple2 emulates a vt100 terminal running on a
40x24 uppercase-only screen.

For example:

apple2 --text --program 'ping apple.com'
apple2 --text --program 'ps -e'
apple2 --text --program 'od -txCz -w7 /dev/urandom'
apple2 --text --program 'cat /dev/random'
apple2 --text --fast --program 'emacs -nw -q -f life'
apple2 --text --fast \
--program 'emacs -nw -q --eval "(hanoi 5)"'

You can also use apple2 as an extremely lo-fi replacement for
the xterm(1) and gnome-terminal(1) terminal emulators:

apple2 -text -fast -program tcsh

--pty In --text mode, launch the sub-program under a pty so that it
can address the screen directly. This is the default.

--pipe In --text mode, launch the sub-program at the end of a pipe:
do not let it address the screen directly.

--esc When the user types a key with the Alt or Meta keys held
down, send an ESC character first. This is the default.

--meta When Meta or Alt are held down, set the high bit on the
character instead.

--del Swap Backspace and Delete. This is the default.

--bs Do not swap Backspace and Delete.

--fast Normally, characters are printed at the speed of an original
Apple][ computer; however, when using this program as a
terminal emulator, the novelty of those 300 baud characters
might wear off. You can use the --fast option to speed
things up a bit.

--fps Display the current frame rate and CPU load.

TERMINAL EMULATION

By default, apple2 allocates a pseudo-tty for the --text-mode sub-
process to run under. This has the desirable side effect that the
program will be able to use ioctl(2) to fetch information about
terminal parameters and window size, which many programs (such as
top(1)) need to run properly. apple2 will also set the environment
variable TERM to vt100 in the child process.

Any characters typed on the apple2 window will be passed along to the
sub-process. (Note that this only works when running in "window"
mode, not when running in --root mode under xscreensaver.)

ENVIRONMENT

DISPLAY to get the default host and display number.

XENVIRONMENT
to get the name of a resource file that overrides the global
resources stored in the RESOURCE_MANAGER property.

XSCREENSAVER_WINDOW
The window ID to use with --root.

TERM to inform the sub-process of the type of terminal emulation.

X RESOURCES

Notable X resources supported include the following which correspond
to standard TV controls: analogTVTint, analogTVColor,
analogTVBrightness, and analogTVContrast which correspond to standard
TV controls. They range from 0 to 100,except for tint which is an
angle between -180 and +180.

TRADEMARKS

Apple ][ and Applesoft are trademarks of Apple Computer.

COPYRIGHT

Copyright (C) 2002-2003 by Trevor Blackwell. Permission to use,
copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided
that the above copyright notice appear in all copies and that both
that copyright notice and this permission notice appear in supporting
documentation. No representations are made about the suitability of
this software for any purpose. It is provided "as is" without
express or implied warranty.

AUTHOR

Television and Apple ][ emulation by Trevor Blackwell <tlb@tlb.org>.
Slideshow and text mode by Jamie Zawinski <jwz@jwz.org>. Pty and
vt100 emulation by Fredrik Tolf <fredrik@dolda2000.com>.

X Version 11 6.09 (07-Jun-2024) apple2(6)