PiDP-8/I Software

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Overview
Comment:Clarified that SCREEN_MANAGER=none is for interactive use only in the README.md file, and made a test for this high up in the pidp8i script.
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SHA3-256: bf005a02cd1c78bfde4e5284e9bb3301e754059d18e56a083c83718842f17ca6
User & Date: tangent 2020-01-27 18:41:59.933
Context
2020-04-19
23:41
Merged in trunk changes, leaving only the dtach changes in this branch. Leaf check-in: 16b4f0c7e2 user: tangent tags: screen-mgr-none-dtach
23:23
Cherry-picked the elements of branch screen-mgr-none-dtach that don't involve dtach, the only part of that branch that doesn't currently work. The main user-visible feature of this is the "none" option. check-in: 9d08417d8e user: tangent tags: trunk
2020-01-27
18:41
Clarified that SCREEN_MANAGER=none is for interactive use only in the README.md file, and made a test for this high up in the pidp8i script. check-in: bf005a02cd user: tangent tags: screen-mgr-none-dtach
18:37
Moved the dtach socket from /tmp to $prefix/run. systemd does strange things with /tmp, and systemd likes "run" for files like this. check-in: d80f67fef7 user: tangent tags: screen-mgr-none-dtach
Changes
Unified Diff Ignore Whitespace Patch
Changes to README.md.
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    this option.

    Unlike `screen` and `tmux`, there is no command layer enetered
    via an "attention" keystroke in `dtach`. The only key that `dtach`
    scans for from the terminal is the detach keystroke, which we leave
    at its default, <kbd>Ctrl-\\<kbd>.

*   **<tt>none</tt>**: Effectively aliases the `pidp8i` and `pidp8i start`


    commands, attaching the simulator to the local console. The `pidp8i



    stop` command becomes a no-op, since stopping the simulator is then
    done in the standard SIMH way: <kbd>Ctrl-E, quit</kbd>.

Note that the alternative screen managers are not installed by default.
If you set `SCREEN_MANAGER=tmux`, you must then ensure that `tmux` is in
fact installed before the `pidp8i` script goes to try and use it. On
Raspbian, this is done by:

    $ sudo apt install tmux








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    this option.

    Unlike `screen` and `tmux`, there is no command layer enetered
    via an "attention" keystroke in `dtach`. The only key that `dtach`
    scans for from the terminal is the detach keystroke, which we leave
    at its default, <kbd>Ctrl-\\<kbd>.

*   **<tt>none</tt>**: This mode is for interactive use, allowing you to
    run the installed simulator with the installed media without any
    screen manager at all.

    In this mode, the `pidp8i` and `pidp8i start` commands do the
    same thing: run the simulator directly attached to your current
    interactive terminal. The `pidp8i stop` command becomes a no-op,
    since stopping the simulator is then done in the standard SIMH way:
    <kbd>Ctrl-E, quit</kbd>.

Note that the alternative screen managers are not installed by default.
If you set `SCREEN_MANAGER=tmux`, you must then ensure that `tmux` is in
fact installed before the `pidp8i` script goes to try and use it. On
Raspbian, this is done by:

    $ sudo apt install tmux
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Changes to bin/pidp8i.in.
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dtsock=$prefix/run/pidp8i-dtach.sock

if [ -e "$prefix/etc/pidp8i.rc" ]
then
    . "$prefix/etc/pidp8i.rc"
fi
[ -n "$SCREEN_MANAGER" ] || SCREEN_MANAGER=screen






is_running() {
    if [ "$SCREEN_MANAGER" = "none" ]
    then
        return 1
    elif [ "$SCREEN_MANAGER" = "tmux" ]
    then








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dtsock=$prefix/run/pidp8i-dtach.sock

if [ -e "$prefix/etc/pidp8i.rc" ]
then
    . "$prefix/etc/pidp8i.rc"
fi
[ -n "$SCREEN_MANAGER" ] || SCREEN_MANAGER=screen
if [ ! -t 1 ] && [ "$SCREEN_MANAGER" = "none" ]
then
    echo "The 'none' screen manager mode is meant for interactive use only!"
    exit 1
fi

is_running() {
    if [ "$SCREEN_MANAGER" = "none" ]
    then
        return 1
    elif [ "$SCREEN_MANAGER" = "tmux" ]
    then
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    cd @abs_top_builddir@
    export XDG_RUNTIME_DIR=/run/user/$(id -u)
    unitdir=~@INSTUSR@/.local/share/systemd/user
    @INSTALL@ -d $unitdir
    @INSTALL@ -m 644 @srcdir@/etc/pidp8i.service $unitdir
    $systemctl --user daemon-reload
    $systemctl --user enable pidp8i
elif test -t 1 -a -x $systemctl -a "$SCREEN_MANAGER" != "none"
then
    # We were given some other arg(s) and we're attached to a terminal,
    # so build a systemctl command with those args so the user doesn't
    # have to type out the canonical form of the command.
    $systemctl --user $verb "$@" pidp8i
    exit $?
elif [ "$verb" = "start" ]








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    cd @abs_top_builddir@
    export XDG_RUNTIME_DIR=/run/user/$(id -u)
    unitdir=~@INSTUSR@/.local/share/systemd/user
    @INSTALL@ -d $unitdir
    @INSTALL@ -m 644 @srcdir@/etc/pidp8i.service $unitdir
    $systemctl --user daemon-reload
    $systemctl --user enable pidp8i
elif test -t 1 -a -x $systemctl
then
    # We were given some other arg(s) and we're attached to a terminal,
    # so build a systemctl command with those args so the user doesn't
    # have to type out the canonical form of the command.
    $systemctl --user $verb "$@" pidp8i
    exit $?
elif [ "$verb" = "start" ]
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