Wadatsumi

Gameboy (DMG) emulator written in Arrow.

Tasks

• BIOS

• Sprite / Mode-3 Timing

• Reduce code duplication among memory controllers

• Prevent opposite directions on the D-Pad from being pressed simultaneously ( doing so locks up some games like "Pocket Bomberman")

• [CGB] H-Blank DMA

• MBC3 Timer

• MBC5 Rumble

• Command Line Arguments

  • -m gb and -m cgb to select mode
  • --scale / -s to specify the scale factor
  • --audio-sample-rate to specify the audio sample rate

• When the LCD is enabled we should still emit "refresh" events to the front-end to keep up with V-Sync

Bugs

• In "Wario Land (SML 3)"; smashing a block from below while crouching produces a jarring sound. My guess is the noise channel is running too fast in this instance.

• In "Dragon Warrior I and II"; saving to the journal seems to indeed write to the journal but only the existence of said journal. No progress beyond name selection is remembered. "Pokemon Pinball" also doesn't appear to save correctly. Both games are for the Color Gameboy but are supposed to be GB-compatible.

• In "Pokemon Trading Card Game"; I get an immediate white screen and then it seems to freeze