Retro Replay Retro Gaming History, Reviews & Emulation
Nintendo Entertainment System · Improvement
PAL Mode
By fractal161
Tetris · All hacks & resources →PAL Mode gameplay screenshots.
About this project
Emulates the PAL edition of Tetris for people with NTSC cartridges.
Though this sounds absurd, it is accomplished by meticulously polling every 6/5 of an NTSC frame (which make the polling rate 60hz * 5/6 = 50hz), and updating the game state based off of that. This is in turn accomplished through the MMC3's *scanline counter* (which required a conversion of NES Tetris's mapper from MMC1).
It's still mostly untested, but the end goal is to be able to run TASes made for PAL Tetris on here without any issues, so that it may be a true alternative for people with access to only NTSC hardware.
Original game requirements
Database match: Tetris (USA) Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042) File SHA-1: 77747840541BFC62A28A5957692A98C550BD6B2B File CRC32: 6D72C53A ROM SHA-1: FD9079CB5E8479EB06D93C2AE5175BFCE871746A ROM CRC32: 1394F57E
Creator credits
- fractal161
- Hacking
RELEASE 1.0
Readme & instructions
No readme is available for this release.
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