Gameboy Emulator

Gameboy Emulator (DMG) written in Rust.This emulator aims to emulate in a cycle-accurate way the behaviour of the first gameboy model. It uses a central bus architecture and RAM splitting to remove the components' need to know details about other components.

Gifs

Pokemon	Tetris

How to run

1. Clone the repository
2. Execute "cargo run <ROM path>"

Supported features in the current version

Component	CPU	PPU	Joypad	Screen	Timers	Interrupts	DMA	MBC1	MBC2	MBC3	MBC5	Serial	APU
Supported	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	❌	❌	❌

Passed tests in the current version

Please note that I have only run the tests relevant to the DMG and not other gameboy models.

Blargg tests
Test Passed cpu_instrs/ ✅ dmg_sound/ ❌ instr_timing/ ✅ mem_timing/ ✅ mem_timing-2/ ✅ oam_bug.gb ❌ halt_bug.gb ❌

Mooneye tests

Test Passed bits/mem_oam.gb ✅ bits/reg_f.gb ✅ bits/unused_hwio-GS.gb ✅ instr/daa.gb ✅ interrupts/ie_push.gb ❌ oam_dma/basic.gb ✅ oam_dma/reg_read.gb ✅ oam_dma/sources-GS.gb ❌ ppu/hblank_ly_scx_timing-GS.gb ❌ ppu/intr_1_2_timing-GS.gb ❌ ppu/intr_2_0_timing.gb ❌ ppu/intr_2_mode0_timing.gb ❌ ppu/intr_2_mode0_timing_sprites.gb ❌ ppu/intr_2_mode3_timing.gb ❌ ppu/intr_2_oam_ok_timing.gb ❌ ppu/lcdon_timing-GS.gb ❌ ppu/lcdon_write_timing-GS.gb ❌ ppu/stat_irq_blocking.gb ❌ ppu/stat_lyc_onoff.gb ❌ ppu/vblank_stat_intr-GS.gb ❌ serial/boot_sclk_align-dmgABCmgb.gb ❌ timer/div_write.gb ✅ timer/rapid_toggle.gb ✅ timer/tim00.gb ✅ timer/tim00_div_trigger.gb ✅ timer/tim01.gb ✅ timer/tim01_div_trigger.gb ✅ timer/tim10.gb ✅ timer/tim10_div_trigger.gb ✅ timer/tim11.gb ✅ timer/tim11_div_trigger.gb ✅ timer/tima_reload.gb ✅ timer/tima_write_reloading.gb ❌ timer/tma_write_reloading.gb ❌ add_sp_e_timing.gb ❌ boot_div-dmgABCmgb.gb ✅ boot_hwio-dmgABCmgb.gb ❌ boot_regs-dmgABC.gb ✅ call_cc_timing.gb ❌ call_cc_timing2.gb ✅ call_timing.gb ❌ call_timing2.gb ✅ di_timing-GS.gb ❌ div_timing.gb ✅ ei_sequence.gb ✅ ei_timing.gb ✅ halt_ime0_ei.gb ✅ halt_ime0_nointr_timing.gb ❌ halt_ime1_timing.gb ✅ halt_ime1_timing2-GS.gb ❌ if_ie_registers.gb ✅ intr_timing.gb ✅ jp_cc_timing.gb ❌ jp_timing.gb ❌ ld_hl_sp_e_timing.gb ❌ oam_dma_restart.gb ❌ oam_dma_start.gb ❌ oam_dma_timing.gb ❌ pop_timing.gb ✅ push_timing.gb ✅ rapid_di_ei.gb ✅ ret_cc_timing.gb ❌ ret_timing.gb ❌ reti_intr_timing.gb ✅ reti_timing.gb ❌ rst_timing.gb ✅