[\-background \fIcolor\fP] [\-window] [\-root] [\-mono] [\-install]
[\-visual \fIvisual\fP] [\-delay \fIseconds\fP]
[\-program \fIcommand to run\fP]
-[\-text] [\-slideshow] [\-basic]
+[\-basic] [\-slideshow] [\-text]
+[\-meta] [\-esc] [\-bs] [\-del] [\-fast]
.SH DESCRIPTION
The
.I apple2
glory. It also reproduces the appearance of display on a color
television set of the period.
.PP
-There are 3 modes: text, slideshow, and basic. Normally it chooses a
-mode randomly, but you can override with the \fI\-text\fP,
-\fI\-slideshow\fP, or \fI\-basic\fP options.
-.PP
-In text mode it displays the output of a command (by default your
-system's fortune program, but can be overridden with -program).
-.PP
+There are 3 modes: basic, slideshow, and text. Normally it chooses a
+mode randomly, but you can override with the \fI\-basic\fP,
+\fI\-slideshow\fP, or \fI\-text\fP 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.
-.PP
-In basic mode a simulated user types in a Basic program and runs it.
+In text mode it displays the output of a command (by default your
+system's fortune program, but can be overridden with \fI\-program\fP).
+
+In text mode, it is also a fully functional (if anachronistic)
+vt100 terminal emulator.
.SH OPTIONS
.I apple2
accepts the following options:
.B \-delay \fIdelay\fP
The delay between displaying one crash and another.
.TP 8
-.B \-text
-Choose text mode
+.B \-basic
+Choose basic mode
.TP 8
.B \-slideshow
Choose slideshow mode
.TP 8
-.B \-basic
-Choose basic mode
+.B \-text
+Choose text mode
.TP 8
.B \-program \fIsh-command\fP
In text mode, the command to run to generate the text to display. This
exits, it will be launched again after 3 seconds. Default:
.BR fortune (1).
-Note that apple2 is \fInot\fP a terminal emulator: programs that try
-to directly address the screen will not do what you might expect. It
-merely draws the characters on the screen left to right, top to
-bottom. Lines wrap when they reach the right edge, and the screen
-scrolls when characters reach the bottom.
-
-In other words, programs like
-.BR fortune (1)
-will work, but programs like
-.BR top (1)
-won't.
+In text mode, \fIapple2\fP emulates a vt100 terminal running on a 40x24
+uppercase-only screen.
For example:
.EX
-apple2 -text -program 'cat /usr/src/linux*/README | fold -sw40'
+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/random'
+apple2 -text -fast -program 'xemacs -nw -q -f life'
+apple2 -text -fast \\
+ -program 'xemacs -nw -q --eval "(hanoi 5)"'
+.EE
+You can also use \fIapple2\fP as an extremely lo-fi replacement for the
+.BR xterm (1)
+and
+.BR gnome-terminal (1)
+terminal emulators:
+.EX
+apple2 -fast -program tcsh
.EE
+.TP 8
+.B \-pty
+In \fI\-text\fP mode, launch the sub-program under a pty so that it
+can address the screen directly. This is the default.
+.TP 8
+.B \-pipe
+In \fI\-text\fP mode, launch the sub-program at the end of a pipe:
+do not let it address the screen directly.
+.TP 8
+.B \-esc
+When the user types a key with the Alt or Meta keys held down, send an
+ESC character first. This is the default.
+.TP 8
+.B \-meta
+When Meta or Alt are held down, set the high bit on the character instead.
+.TP 8
+.B \-del
+Swap Backspace and Delete. This is the default.
+.TP 8
+.B \-bs
+Do not swap Backspace and Delete.
+.TP 8
+.B \-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 \fI\-fast\fP option to speed things up a bit.
+.SH TERMINAL EMULATION
+By default, \fIapple2\fP allocates a pseudo-tty for the \fI\-text\fP-mode
+sub-process to run under. This has the desirable side effect that the
+program will be able to use
+.BR ioctl (2)
+to fetch information about terminal parameters and window size, which
+many programs (such as
+.BR top (1))
+need to run properly. \fIapple2\fP will also set the environment
+variable \fITERM\fP to \fIvt100\fP 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 \fI\-root\fP mode under xscreensaver.)
.SH ENVIRONMENT
.PP
.TP 8
.B XENVIRONMENT
to get the name of a resource file that overrides the global resources
stored in the RESOURCE_MANAGER property.
+.TP 8
+.B TERM
+to inform the sub-process of the type of terminal emulation.
.SH X RESOURCES
Notable X resources supported include the following which correspond
to standard TV controls:
.BR webcollage (1),
.BR driftnet (1)
.BR EtherPEG ,
-.BR EtherPeek
+.BR EtherPeek ,
+.BR console_codes (4).
.SH COPYRIGHT
Copyright \(co 2002-2003 by Trevor Blackwell. Permission to use, copy,
modify, distribute, and sell this software and its documentation for
.SH 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>.
projects / xscreensaver / blobdiff