Gameboj is a complete Nintendo Game Boy of 1989 emulator written from scratch in Java. Any game cartridge can be downloaded as a .gb file and played on the emulator.
The original Sharp LR35902 processor is emulated on a very low level. Bus controller, ROM, RAM, Direct Memory Accesses (DMA), screen controller etc... are implemented according to the original Nintendo specs.
Moreover, I added special functionality that lets the user fiddle with the play speed, analyse the video memory (tiles, sprites, background, window) and capture a screenshot.
- Bus, ROM and RAM controllers
- Arithmetic logic unit (ALU) of the CPU
- Registers and "high RAM" of the CPU
- Decoding of arithmetic, logic and control instructions
- Direct memory access (DMA)
- Screen controller
- Timer and keyboard interrupts
- Booting from a cartridge
