Horizon

Horizon is a BBC Model B emulator for Mac OS X.

Horizon (formerly MacBeebEm) was one of the first emulators available for Macintosh. Despite this, it has fairly good compatibility with original BBC software, allowing you to play titles such as Elite without problems. The Mac OS X version adds an improved GUI and significantly improved sound to the original version.

Horizon was initially developed for classic MacOS and Windows by Chris Lam. While the source code for Horizon is not available, the toolkit used to develop the Macintosh port will be available in the longer term from my developer pages. Certain portions are available now, and more will be added in the future.

What is new in this release:

• Audio recording no longer stops when emulator is switched to background, provided that the option to keep emulating in background is on. Recording will still stop if the emulator does.
• Brushed metal mode is now off by default on new installs, as well as existing installs where users press the Default button.
• Fixed an obscure endian bug that resulted in odd window sizes when an emulator preferences file was moved between PowerPC and Intel.
• Fixed several minor visual glitches in the Preferences dialog box.
• Modified the behaviour of the Quick Freeze function, so that the last ten quick freezes for each game are kept in ~/Library/Application Support/Bannister/(emulator name)/Saved States. You can restore these at any time using the Defrost menu command. Added code to stop the quick freeze and quick defrost keys from being repeated. Thanks to David McCabe for the suggestion.
• Replaced custom about box with standard HIAboutBox. Removed option to pause execution when about box is open.
• Fixed bug whereby dropping file into Horizon window would cause an assertion failure.

Requirements: