nxdk VS gb-studio

In addition to what tehbeard mentioned, Xemu at least (which is what i have experience with as i used it to do some homebrew development[0] with the open source nxdk[1] SDK) is far from accurate and largely just a means for playing OG Xbox games on modern hardware. However the GPU emulation does not take into account NV2A's performance at all and simply translates the calls to OpenGL (despite the "DirectXbox" name, the GPU is actually designed around OpenGL :-P) so it is much faster than the real one and depending on what is going on the CPU performance can also be quite faster. IIRC it doesn't even emulate the real CPU the OG Xbox has as you can accidentally use instructions in Xemu not available on the real hardware.

Of course if your goal is to just have games from OG Xbox playable on a PC that is fine (if anything for most games it is an improvement as they'd run smoother) but if you want cycle accurate emulation it doesn't fit the bill. In that case basing the emulator on something like 86box might be better as that has been designed with the goal of achieving cycle accurate PC hardware emulation.

[0] https://www.youtube.com/watch?v=gQpK6eX-04M

[1] https://github.com/XboxDev/nxdk/

Try NXDK. MS code free, open-source development kit.

I know that there are legal SDKs available. An older one is OpenXDK, and NXDK is a newer one still under active development. The xboxdevwiki acts as a hub of information on it.

NXDK - the new open source xdk is the development environment to use instead of the leaked Microsoft XDKs.

I found https://github.com/XboxDev/nxdk. Is that what I am supposed to use? Is there anything higher level instead of C/C++?

The Xbox SDK on the software side. I know there's the nxdk, a descendent of the earlier OpenXDK. And of course there are leaks of the original Microsoft tools, which I think might need XP or so to run correctly.

There is also this project: https://github.com/XboxDev/nxdk

GB-Studio (MIT/C) https://github.com/chrismaltby/gb-studio

I doubt it was intentional. They hired a studio to make a retro style game and they probably just happened to hire one specializing in gb development. There's a lot of good tools now like https://www.gbstudio.dev/

👾 Software - GB Studio. I spent a large part of my childhood playing Tetris and Micro Machines on my Gameboy. Now anyone can create Gameboy games with a drag-and-drop editor.

Very cool! Maybe you can make a pixel art style portfolio of your work that runs on a GB cart and a rom to share around? Do you know about GBStudio?

No, it's an actual game boy game built using GB Studio, that's the point, that it's compatible with any device capable of running GB games, including original hardware! :)

It actually does interpret bytecode, you can see the opcode definitions here https://github.com/chrismaltby/gb-studio/blob/1f995a976bd3aa...

The trick is that a lot of the heavier stuff is implemented in assembly and this is mostly used for lighting scripting (from what I understand).

Me when gameboy studio exists: https://www.gbstudio.dev/

If you ever want to just play around with gameboy stuff, GB Studio is much simpler, but only supports building certain types of games, since it's a no-coding kind of thing.