A cross-platform BBC Micro emulator. Use your Linux PC to play your old BBC games or develop new BBC software..
This snap is built from source found at https://github.com/tom-seddon/b2
This is an unofficial snap, not provided or supported by the upstream developer.
Everything you need to get started is provided, and the familiar
BBC Computer 32K message should appear straight away.
Load a disc
Drive 0 or
Drive 1 on the
File menu to load a disc. Use the
Disc image option to select an
SSD file, then hit Shift+Break (PC Shift + PC F11) to start it.
Changing the BBC disc image doesn't affect the file on the PC disk - after loading a disc image, there are additional
Save disc image and
Save disc image as... options you can use to do this manually.
The default setup is a BBC Model B with Acorn 1770 DFS and 16K sideways RAM. The
Change config submenu lets you select something different.
Change keyboard mapping
The default keyboard layout maps PC keys to their BBC equivalent by position - typically what you want for games. Some games might be better with the
Default (caps/ctrl) layout, which sets PC Left Ctrl to BBC Caps Lock, PC Left Alt to BBC Ctrl, and PC Caps Lock to BBC Ctrl.
There are also two character map options, designed for typing, which try to map PC keys to BBC keys based on the character, so that PC
Shift+0 gives you
) and so on.
Default UK is for UK-style keyboards, and
Default US is for US-style keyboards. For US-style
keyboards, press ` to get the pound sign.
Save state to save your place, and
Load last state to reload it. All state is saved, including disc contents.
Timeline... to visualise the saved states. The timeline is shown as a tree of rounded boxes (saved states) and square boxes (open windows), with arrows showing the relationships.
Load to load an old state,
Clone to create a new window starting from that state,
Replay to watch a replay from that state to the current state, or (Windows/Linux only)
Video to save a video replay. (Video is MP4: 800Kbps H264 video + 128Kbps AAC audio.)
If the timeline becomes too full of junk, click
Delete to delete a saved state.
Options... to bring up the options dialog, letting you fiddle with screen size and speed limiting and stuff.
Auto scale to have the Beeb display automatically scaled based on the window size, or untick it and use the
Manual scale filter to choose your preferred scale.
Correct aspect ratio makes the display slightly narrower, better matching the output from a real BBC.
Filter display lets the GPU smooth the display a bit when it's being stretched.
For best results, leave these options on.
For (inauthentic!) 1:1 pixel output, switch them off and set a manual scale of 1.0, or 2.0, and so on.
Further information can be found at https://github.com/tom-seddon/b2/blob/master/README.md