5

I am looking for a SID emulator that is open source, but not GPL. In particular, I am looking for something with a license that allows me to link it to a closed-source program; and also one that allows me to take its source code and rewrite it in a different language targeting a different platform, and then release that rewrite under an open source license. LGPL, or MIT/BSD would be examples of licenses that would work for me.

I know of the following SID emulator engines, but all of them are GPL:

Then there's also

  • 2
    You could always wrap it in a GPL server which communicates via an open API to your closed source program. – Arne Jul 8 '18 at 12:28
  • 2
    Another idea is to ask the programmers if they would re-license it (for a grant) for you. – Janka Jul 8 '18 at 18:39
  • 4
    @Arne: that's a can of worms. See gnu.org/licenses/gpl-faq.en.html#AggregateContainers , in particular: But if the semantics of the communication are intimate enough, exchanging complex internal data structures, that too could be a basis to consider the two parts as combined into a larger program. TLDR: Licensing issues are complex. – ninjalj Jul 9 '18 at 9:58
  • 2
    I like Janka's idea, for the record. A lot of authors pick the GPL by default for protection while being able to enjoy seeing their code be useful — I'm sure at least one would be happy to relicense to you with a suitable guarantee of credit and references to the GPL original. – Tommy Jul 9 '18 at 18:01
  • 1
    GPL does allow you to rewrite it in a different language for a different platform, as long as the rewrite is released under the same license. – immibis Jul 11 '18 at 0:32
6

One open source, non-GPL SID emulator that I have found is another one also called jsSID, but completely independent of the one linked in the original question. This one is available from http://hermit.uw.hu/index.php (latest download link) and contains the following license in its README.txt:

Licenses? The license is the popular WTF license, so 'do what the fukk you want with this code'. :) I'd be grateful if my name/credits won't be removed from it, but otherwise feel free to use it as you wish.

The emulator is written in JavaScript and includes its own 6510 emulator as well.

  • There is also a cSID C++ version. But sadly without source code. – Arne Jul 9 '18 at 19:40
0

sid-arduino-lib is LGPL. Its downside is that it is written targeting AVR microcontrollers, so porting it to a desktop setting would be more involved.

  • 7
    Christoph Haberer's original is GPL, not LGPL, so the author claiming their work is LGPL may be a violation of the original licence – scruss Jul 11 '18 at 2:27

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Not the answer you're looking for? Browse other questions tagged or ask your own question.