Super Castlevania IV FastROM Patch - Improves performance
Brazilian hacker Vitor Vilela (@HackerVilela) (the same guy responsible for the Gradius III and Contra III SA-1 patches) has released a FastROM patch for Super Castlevania IV which dramatically improves the performance of the game:
https://github.com/VitorVilela7/fastrom/releases
https://sneslab.net/wiki/How_to_apply_ROM_patches
Quote:
Some games like Castlevania were made in SlowROM (2.68 MHz). Project FastROM makes them run in FastROM (3.58 MHz) instead. FastROM allows the SNES CPU to read data and opcodes from the ROM 33.58% faster compared to SlowROM.
Link to his SA-1 patches:
https://github.com/VitorVilela7/SA1-Root/releases
He's currently working on a Super R-Type SA-1 patch.