Technology1 min read

GUI64 – GUI for the Commodore 64 running on top of the built-in ROM

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In short

The software enables users to manage floppy disks and SD2IEC files through movable windows controlled via a joystick or a compatible mouse. To maintain system performance on the vintage 40-column display, the environment functions technically as a text user interface mapped strictly to an 8×8-pixel grid rather than a traditional bitmap. It offers selectable interface layouts inspired by classic Windows and Macintosh operating systems. Advanced functionality is unlocked on Ultimate hardware cartridges, enabling direct image mounting from modern USB drives and SD storage.

Key points

  • Users can navigate the desktop environment using a mouse in Control Port #1 or a joystick…: Users can navigate the desktop environment using a mouse in Control Port #1 or a joystick connected to Control Port #2.
  • Interface designs include a Windows-style taskbar with a Commodore button or a classic Ma…: Interface designs include a Windows-style taskbar with a Commodore button or a classic Macintosh-style top menu bar.
  • Ultimate cartridge owners can mount disk images directly from external USB drives and sav…: Ultimate cartridge owners can mount disk images directly from external USB drives and save configurations straight to flash storage.

Sources checked by our analysis pipeline: 1

GUI64

GUI64 | ||

---|---|---|

Developer | WebFritzi | |

Company | n.a. | |

Publisher | Friedrich Philipp | |

Release | 2024 | |

Licence | CC BY-NC 4.0 | |

Platform | C64 | |

Genre | Grafical User Interface | |

Operation | ||

Media | ||

Language(s) | ||

Information | Current Version 2.0 |

Description[edit | edit source]

GUI64 is a graphical user interface (GUI) for the C64, first released in version 1.0 in November 2024. Although GUI64 may appear to be a standalone operating system, it is just a graphical layer running on top of the C64’s built-in ROM-based operating system, the Kernal. GUI64 presents files and directories in freely movable windows, allowing for easy file management on floppy disks as well as on disk images stored on SD2IEC devices. When GUI64 is running on an Ultimate device, all settings are saved, and disk images can be mounted directly from within the GUI. The current version of GUI64 is 2.0.The current version of GUI64 is 2.1.

Operation[edit | edit source]

GUI64 can be…

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