Castor

Castor is a Gameboy interpreter written using C# and Monogame. The primary purpose of this project is to learn about emulator systems and low-level operations.

Passing Tests

Blargg's test roms

• cpu_instrs

  • 01 - special
  • 02 - interrupts
  • 03 - op sp,hl
  • 04 - op r,imm
  • 05 - op rp
  • 06 - ld r,r
  • 07 - jr,jp,call,ret,rst
  • 08 - misc instrs
  • 09 - op r,r
  • 10 - bit ops
  • 11 - op a,(hl)

• dmg_sound

• instr_timing

• interrupt_time

• mem_timing

• Blargg's mem_timing-2

• Blargg's oam_bug

• Blargg's halt_bug

Screenshot(s)

           

Resources used:

• The Ultimate Game Boy Talk - A talk attempting to communicate "everything about the Game Boy".
• Gameboy Development Wiki - A wiki containing technical documents, emulators, debuggers, and other tools that have to do with gameboy development.
• Instruction Manual - An online instruction manual on how each instruction should be implemented.
• GBZ80 Decoding Manual - A manual on how to algorithmically decode gameboy instructions as opposed to writing one huge switch-case statement for over 500 instructions.
• Emulation accuracy - Documentation talking about questions about certain ambiguities of the gameboy.
• simias/gb-rs - A reference point for my emulator, it is a Game Boy emulator written in Rust.