Brazilian MSX fan sd_snatcher is on a roll recently, releasing more enhancement patches than we can keep up with. His latest enhancement patch is for a classic Konami franchise: Vampire Killer (Akumajo Dracula), known on other systems as Castlevania. Modifications for this platform game are:
- DynamicVsync (it also fixed the infamous 50Hz speed bug, as the Z80A/3.57MHz was also too fast to run the game at 50Hz)
- Enhanced sprite cycling: sprites will be cycled as fast as your CPU is able to do it, up to 60Hz. This results in smoother flickering.
- Page flipping for the sprites: fixes the sprite flickering that happened on the top the of the screen and eliminates tearing completely.
- Enables the turbo via CHGCPU on boot
- Hold the TAB key to throttle the game speed
- Automatically sets the VDP to 60Hz on boot, to play the game at the correct speed even on European machines. If you have an old European TV that doesn't support this, keep SELECT pressed on boot to disable it.
- Correct handling of non-VDP interrupts, which are now passed along to the interrupt chain.
- Removed the internal pseudo GameMaster-1 to release space for the enhancements. You can use GameMaster-2 with this game instead.
- Fixed inconsistent keyboard vs joystick interface: now when playing on the keyboard the player also jumps by pressing the secondary trigger (M or N key). The UP key is now only used to climb stairs. This solves the frustrating jumping-instead-of-climbing situations that happened before.
- Added support for the Megadrive 3-button joypad connected though a joymega adapter. (START button = pause, A-button = MAP).
Relevant link: FRS
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