Loading an AArch64 module on RISC OS

by gerph 3 months ago

macOS ◆ xterm-256color ◆ fish 29 views

RISC OS has, traditionally, only run on the 32bit ARM instruction set (even when it was 26bit, it was still using the same base instruction set). RISC OS Pyromaniac, however, can load and execute RISC OS modules written in 64bit ARM - AArch64.

The example here loads a module written in AArch64, in assembler.

The contents of the module file is printed with the *DumpI command.
The module is loaded and prints a message saying it is initialising and its environment string.
Then the module is killed, triggering the finalisation code which also prints a message.

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You can download this recording in asciicast v2 format, as a .cast file.

Download

Replay in terminal

You can replay the downloaded recording in your terminal using the asciinema play command:

asciinema play 671698.cast

If you don't have asciinema CLI installed then see installation instructions.

Use with stand-alone player on your website

Download asciinema player from the releases page (you only need .js and .css file), then use it like this:

<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="asciinema-player.css" />
</head>
<body>
  <div id="player"></div>
  <script src="asciinema-player.min.js"></script>
  <script>
    AsciinemaPlayer.create(
      '/assets/671698.cast',
      document.getElementById('player'),
      { cols: 80, rows: 40 }
    );
  </script>
</body>
</html>

See asciinema player quick-start guide for full usage instructions.

While this site doesn't provide GIF conversion at the moment, you can still do it yourself with the help of asciinema GIF generator utility - agg.

Once you have it installed, generate a GIF with the following command:

agg https://asciinema.org/a/671698 demo.gif

Or, if you already downloaded the recording file:

agg demo.cast demo.gif

Check agg --help for all available options. You can change font family and size, select color theme, adjust speed and more.

See agg manual for full usage instructions.