system – The Universe of Commodore 64

2025.08.16.2025.09.26.

Operating Systems and Environments for the Commodore 64

While the Commodore 64 (C64) originally shipped only with KERNAL (firmware-level routines) and Commodore BASIC V2, the creativity of developers and hobbyists pushed it far beyond its starting point. Several systems and environments have given the C64 GUI desktops, multitasking, fast I/O, and even modern networking. GEOS (Graphic Environment Operating System) Released: 1986 — Berkeley Softworks Features: Icon-and-window …

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2025.04.11.2025.04.11.

Commodore 64 Smart Watch history

The connection between the Commodore 64 and a "Seiko smartwatch" likely refers to the Seiko RC-1000 Wrist Terminal, introduced in 1984, which was compatible with various computers of the era, including the Commodore 64. The RC-1000 is considered one of the earliest "smartwatches," though its capabilities were far more limited than modern devices. Below is …

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2025.02.07.2025.02.07.

Kung Fu Flash 2

You can now own the new version of Kung Fu Flash cartridge with some more improvements. Kung Fu Flash 2 is the big brother of Kung Fu Flash. It has a faster microcontroller with more memory and I/O pins, allowing for additional functionality. Supported Cartridges The following cartridge types are currently supported: Generic cartridge (8k, …

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2024.11.14.2024.11.14.

GUI64 (2024, WebFritzi)

A brand new Windows 95 / 98 like graphical user interface for the Commodore 64 has been released recently. You can run your programs and games but also cut/copy/paste/delete/rename files or format/rename disks. The new GUI is currently available in two file formats: .d64 and .prg, the latter of which works nicely with the Kung …

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2024.05.01.

TEOS – Text Based Operating System For Commodore 64

An unfinished but very amazing project for Commodore 64 which is a fast, universal and simply good looking operating system. All of this is just for fun and hobby by John Christian Lønningdal who is the coder of the great action game named Rocket Smash EX. Running several processes at the same time ! As …

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2024.03.11.2024.03.12.

TRIANGULAR μOS 1.27 (2023, Michael Goral)

TRIANGULAR μOS is a GUI (Graphic User Interface) operating system for 8-bit Commodore computers like Commodore 64. Goal of creating this system was to develop GUI for 8-bit Commodore computers with lowest amount of memory: that is Commodore PET with at least 4 KB of memory. Next it was expanded for Commodore VIC-20 with standard …

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2024.03.03.2024.03.03.

Green Delicious Apple-1 Emulator (2013, Aleksi Eeben)

This tool is used to test the operation of the Apple-1 computer from 1976 via a Commodore 64 computer. It emulates the 40x24 monochrome display, 7x8 character cells (280x192 pixels), pixel-perfect Signetics 2513 character generator, instant 50/60 Hz hardware scrolling and an ASCII keyboard. It mimics somewhat sufficiently the PIA interface chip functions and it's …

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2024.03.02.

C64 OS (2022, Gregory Naçu)

The modern operating system is now up to version 1.05, a few years after its release, thanks to some great improvements. C64 OS is a modern operating system add-on that balances power and ease of use, while respecting the computer's modest specifications. C64 OS lets you do things with your Commodore 64 that Commodore would …

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2024.02.05.2024.02.05.

GeckOS – The Unix-like operating system

GeckOS is a Unix-like multitasking operating system for computers with MOS Technology 6502 processors. GeckOS was already developed in 1989 for a clone of the Commodore PET with additional MMU. It was later ported to the C64. The developer included a software library "lib6502" that provided compatibility between GeckOS and LUnix. GeckOS was also open …

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2024.02.03.2024.02.03.

Supra 64 (1990, Th.Langenkamp)

An interesting, GEOS-like operating system has been appeared in 1990 what you have may missed. All owners of the "new" c 64 will certainly know the user interface GEOS, and also quite a few old c 64 maniacs should not be unfamiliar with such a program type. Besides the usual notepad or calculator, the software …

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