Could someone with a cartridge not compatible with v5.2 test the version I have attached please. If it works, can you identify any bugs?
To edit the splash screen it is like the other icons, except you need to name it 'gImage_splash' not 'gImage_SPLASH', just a slight inconsistency in naming.
To change the sounds, use short mono 8-bit signed PCM raw sound effects at 22050 Hz, then convert the .raw files into C header arrays for the kernel. Starting from WAV is best, but any source format is fine as long as the final raw output is signed 8-bit, mono, 22050 Hz, headerless. I used Audacity to prep my sound files (mono, 22050hz, adjusted amplitude so they're loud enough, export as wav 8-bit PCM), then converted them to raw files with FFmpeg. This is the code I ran with FFmpeg: '.\ffmpeg -i startup.wav -ac 1 -ar 22050 -f s8 startup.raw' change 'startup' to the specific sound you are currently converting. The process has a couple steps, so it may be easiest to give the kernel file and some of the sound headers (e.g. accept_raw.h) to a LLM like claude or chatGPT and ask if how to swap out the audio. For some of the code I may have hard coded the length the audio plays, for other bits it calculates the length, so you may run into issues if your sounds are signficantly different in length. Again I'd suggest to get ai to sift through the code and identify these parts, rather than do it manually, it's good at that sort of thing. Although, I wouldn't just blindy trust anything it writes! (But you can probably get away with it for small changes). Hope that helps, sorry, I know it's a little confusing.
