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Re:GUI64 – GUI for the Commodore 64 running on top of the bu... by Grimeton on Monday November 02, 2026 @09:46PM (#50347367)
One word: GEOS
Re:GUI64 – GUI for the Commodore 64 running on top of the bu... by selcuka on Monday November 02, 2026 @11:57PM (#50348261)
GEOS comes with its own ROM and bypasses the Commodore 64 "Kernal". This one is a GUI that runs on existing ROM.
Re:GUI64 – GUI for the Commodore 64 running on top of the bu... by jakedata on Tuesday November 03, 2026 @08:51AM (#50351966)
I used GEOS unironically in high school. I had two 1541 floppy drives which really cut down on the disk swapping and I was able to do productive work. Ultimately I used my employee discount to upgrade to a Tandy 1000 TL that would boot into DeskMate from ROM and took it to college, leaving the C64 in the dust. I still have all the stuff but not the time.
Re:GUI64 – GUI for the Commodore 64 running on top of the bu... by MomsAVoxell on Tuesday November 03, 2026 @02:29AM (#50349111)
ContikiOS!
Re:GUI64 – GUI for the Commodore 64 running on top of the bu... by ButlerianJihad on Tuesday November 03, 2026 @12:06AM (#50348306)
Limitations:

  GUI64 does not use the VIC-II’s bitmap graphics mode, but operates in text mode. GUI64 is therefore character set–based... Strictly speaking, GUI64 should therefore be considered not a GUI, but a TUI (Text User Interface).

  Currently, there are no applications for GUI64. 
So, it is a file manager, inferior to an orthodox file manager. It supports the mouse, and it can launch BASIC. If you like your KERNAL ROM, you can keep your KERNAL ROM.

I never ran GEOS. I saw it advertised, and it seemed fascinating, but perhaps "too early". I had become fluent in BASIC and proficient at the command line. For me, time spent on the Commodore 64 was programming, or in a game or application, rather than pushing files/objects around on the desktop.

Re:GUI64 – GUI for the Commodore 64 running on top of the bu... by snvzz on Tuesday November 03, 2026 @12:32AM (#50348467)
Too bad it's not open source.

("NC" creative commons)

Re:GUI64 – GUI for the Commodore 64 running on top of the bu... by MiroslavPokorny on Tuesday November 03, 2026 @03:22AM (#50349440)
How much memory will be free for apps ?
Re:GUI64 – GUI for the Commodore 64 running on top of the bu... by jlundberg on Tuesday November 03, 2026 @07:19AM (#50351085)
Related, Contiki OS is good inspiration and a really cool: https://csdb.dk/release/?id=8197&show=summary

Open Source and available on github. The old web site seems to be down which is a bit of a shame.