jsbeeb emulates the BBC Micro Model B and Master 128, and the Acorn Atom that came before them. Choose the machine and the keyboard layout in the settings: click the model name on the top bar.

Elite, the classic 3D space trading game, is already in drive 0. Press SHIFT+BREAK (Shift+F12) to boot it. Other discs and tapes load from the media window: click Media on the top bar. Pasting text types it into the BBC.

Keyboard

A BBC keyboard has its symbols in different places from yours. The default Physical layout goes by position: most keys press the BBC key in the same place, so the BBC's : * key is your ' key. Natural goes by character instead, so what you type is what the BBC gets; it suits typing, and games want Physical or Gaming. Gaming puts the BBC's CAPS LOCK and CTRL on your left Ctrl and Alt, for games that steer with them; jsbeeb's Alt shortcuts still come first. Any key can be remapped from the URL.

On a Mac, hold fn for the function keys. Games there can't use Caps Lock to move or fire, as browsers never report it being let go; the Gaming layout puts the BBC's CAPS LOCK on Ctrl.

Shortcuts

Paused or debugging

After Alt-P, g resumes and n runs one frame. In the debugger (Alt-S):