atop is a "top" for the Amiga Shell: a live, full-screen monitor with
five panels: CPU load, CHIP/FAST memory, volumes, network throughput
and the task list, drawn in the console's own window.

  * CPU and network are braille-style plots; memory and volumes are
    square meters coloured green/amber/red by usage.
  * The task list can be sorted (priority, type, state, name) and a
    selected task can be sent CTRL-C/D/E/F, with a confirm before ^C.
  * The sample period is adjustable from 100 ms to 30 s and is
    remembered between runs.
  * Full mouse support under ViNCEd (click headers to sort, rows to
    select, the buttons to signal); every action also has a key, so a
    plain CON: or KingCON works fine on the keyboard.

It reads only public system state, Exec task lists, AvailMem, the
DosList, VERTB timing and the network interface counters and patches
or hooks nothing.

Requirements

  * AmigaOS 3.0 or newer. Tested on 3.1, 3.2.3, and 3.9
  * A 68020 or better.
  * ViNCEd is recommended (it is the densest console and the only one
    that provides the mouse), but any console works on the keyboard.
  * For the network panel: Roadshow (used automatically), or any other
    stack via a named SANA-II device - see the docs.

It does NOT run on an AROS console (e.g. ApolloOS); it detects that and
exits with a message rather than misbehave.

See atop.doc for keys, the mouse map, the network device setting and
the full details.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
drwxr-xr-x  1000/1000        0       0 ****** -lhd- 0000 Sep 11 17:16 atop/
-rwxr-xr-x  1000/1000    18516   31208  59.3% -lh5- 522e Sep 11 17:16 atop/atop
-rw-r--r--  1000/1000     2746    5634  48.7% -lh5- 14ac Sep 11 17:16 atop/atop.doc
-rw-r--r--  1000/1000      954    1712  55.7% -lh5- f54c Sep 11 17:16 atop/atop.readme
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         4 files   22216   38554  57.6%            Sep 12 00:44