This release features NSF playback support and a bunch of bug fixes/improvements:

• NES: Four-screen mirroring fixes for Holy Diver MMC1 version
• NES: Sprite DMA fix for Dusty Diamond's All-Star Softball
• NES: PPU rewrite
• NES: PPU timing changes to fix random crashes in Battletoads level 2
• NES: vblank/NMI timing changes to fix glitches in Kick Master, Wolverine, and others
• NES: Emulate pixel ouput pipeline (demo_ntsc.nes)
• NES: Remove fast emulation mode
• NES: MMC5 IRQ handling improvements
• NES: Allow writes to MMC5 PRG-ROM area (fixes Bandit Kings of Ancient China)
• NES: Disallow palette writes while rendering (fixes flashes during Solstice intro)
• SMS: R register fix for Reggie Jackson Baseball (pitcher never pitches)
• SMS: R register fix for Impossible Mission (same map used every game)
• SMS: Adjust VDP IRQ timing (fixes Black Belt screen split glitches)
• GB: LYC changes to fix glitch in Link Awakening's title screen
• GB: Various PPU fixes (now passes dmg-acid2 test)