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Commodore Repair Toolbox

Loki762

New Member
Joined
Oct 23, 2025
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3
I don't think it has been posted here previously, so I will dare to post this application awareness for a Windows application named Commodore Repair Toolbox (CRT). I hope this will be okay, but otherwise let me know 😁 I am posting this, as I know this forum is keen for preserving our beloved Commodore hardware, and this is exactly where this application comes into play. As I have just released a new version today, then I thought it was a good opportunity to post it here also.

You can use CRT as a helper-tool to diagnose and troubleshoot Commodore computer hardware issues.
As-of today it has good support for these systems:
  • Commodore VIC-20
    • 250403 (CR)
  • Commodore 64
    • 250407
    • 250425
    • 250466
    • 250469
  • Commodore 128 and 128D(C128D plastic model, not DCR which has the metal cabinet)
    • 310378
It has the schematics, component details and technical links, IC pinouts, datasheets and it has oscilloscope baseline measurements for several of the computers. It also has the option to update its data online whenever new data is available.

Though it is a fairly new tool, then it has been well-received and data quality has increased over time, and you can be sure that this effort will continue, as I at least myself will keep enhancing and adding data.

The project is of course all open source, and can be downloaded from GitHub here:

https://github.com/HovKlan-DH/Commodore-Repair-Toolbox

But let's see a few screenshots, so you can determine if this looks like something you would like to try-out:

1_465291119-67ec34ea-b4bf-4d79-b4c7-645c21a470d1.png

2_465291277-dff7e7d5-c509-425b-acd2-3d9e9a9b95b6.png

3_465292107-07e9c66f-8c2f-4155-8ba9-87911b467a50.png

I would of course be happy, if anyone would like to contribute with data - any kind of contribution would be nice, as it is hard to gather and validate all data myself. E.g. if you could check and correct the data, this would for sure be appreciated, as some places it potentially could be a little dodgy. Just connect with me either via Issues in GitHub or through the application Feedback tab.

It will require Windows 10 or newer, and it is not available as a web page (others have asked) 🤣 It will also not work in Linux via Wine or Mono, nor do I foresee any port to Linux or Mac any day soon, sorry.
 
Are there plans to add the 1540/41 and other Floppy drives as well? This looks like a very useful tool.

Thanks...
 
If someone would like to contribute with the dataset for it, then I will happily include it, but I don't have any plans for doing it myself, as my focus (for now) is mainly on the computers, where the data quality still can be improved.
 
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