HalfNES Version Notes:

0.57 (7/30/2014)

• PPU is now pixel accurate. Meaning that many glitchy games are now completely fixed. However it also means that performance is worse.
  
• MMC3 and MMC5 scanline counters have been rewritten to be more accurate.

Fixed games:

• Marble Madness
  
• Laser Invasion
  
• Mickey´s Adventures in Letterland
  
• Rad Racer
  
• Slalom
  
• Tiny Toon Adventures (the status bar was off by one scan line before)
  
• Mega Man 3 (displays same glitchy lines as real hardware)
  
• Every Namco 163 game (scanline counter was broken)

Also passes several more of blargg´s PPU and MMC3 tests. I haven´t fixed all of the MMC3 based multicart mappers yet.