apple2(6x)
NAME
apple2 - Apple ][ display emulator
SYNOPSIS
apple2 [-display host:display.screen] [-foreground color] [-background color] [-window] [-root] [-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(1) 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.
-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(1).
In text mode, apple2 emulates a vt100 terminal running on a
40x24 uppercase-only screen.
For example:
apple2 -text \
-program 'cat /usr/src/linux*/README | fold -sw40'
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 'xemacs -nw -q -f life'
apple2 -text -fast \
-program 'xemacs -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.
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.
SEE ALSO
xscreensaver(1), bsod(6x), xscreensaver-text(1), fortune(1), phosphor(6x), starwars(6x), ljlatest(6x), dadadodo(1), webcollage(6x), driftnet(1) EtherPEG, EtherPeek, console_codes(4).
COPYRIGHT
Copyright 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>.
Opportunity
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
Free Books
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Education
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.
