SHANTAE GBA ENHANCE EMULATOR CODE

Redoing the DMA code still helped the game a lot. * Xtreme Sports has an earlier version of that game engine, and none the code I made hacks for could be applied to that game at all. * Sabrina Zapped doesn't have the RNG rewritten yet, so it runs at 39FPS. Seems that the game can occasionally crash at the end of a level too, also with audio glitches (stuck notes) at the same time it crashed. * Sabrina Spooked runs at 58FPS normally, and dips down to 55FPS when there are enemies around.

It runs at around 50FPS when there's two enemies on the screen, and 55FPS when there aren't any enemies around.

* WWF Betrayal is a beat-em-up game, and not a wrestling game at all. Unfortunately, this game sometimes crashes when you beat a level, no idea why. * Wendy Every Witch Way dips down to 45FPS when there's lots of enemies on the screen, but runs at 58-60FPS when there aren't any enemies around. * Shantae's Frame rate depends on how many objects are on the screen, but it is usually around 50-55 FPS, or 60 FPS if there's no action going on. Sabrina Zapped uses a different RNG, I haven't ported that yet. * The game engine repeatedly copies the exact same graphics into RAM, then copies them to VRAM though DMA, I replaced that code to do far less unnecessary copying. * The most frequently executed Z80 code was also ported to ARM asm. * The RNG routine, which is called constantly at the end of a frame, was ported to ARM asm (HUGE SPEEDUP). Now there's game-engine specific speedhacks for the engine used by Wayforward's games: Shantae, Wendy Every Witch Way, Sabrina Spooked, Sabrina Zapped, and WWF Betrayal.

I was seeing some bugs earlier, but I can't see them anymore? * I rewrote the VRAM system again, now it's faster. * I rewrote the background tile dirty cache feature, now games can DMA the entire tilemap into VRAM and not be slow. It was way too slow before, this should help all games run faster.

SHANTAE GBA ENHANCE EMULATOR UPDATE

Yes, it's the first update in a very long time. I've released a beta version of Goomba Color for people to test out.

Shantae gba enhance emulator