Emulated Systems

Hemulator supports multiple classic gaming systems. Each system has its own implementation with detailed technical documentation.

System Status Overview

System Status CPU Graphics Audio Coverage
NES ✅ Fully Working 6502 PPU APU ~90% of games
Game Boy ✅ Fully Functional LR35902 PPU APU ~99% of games
CHIP-8 ✅ Fully Working VM Multi-mode Beep Complete
SMS ✅ Functional Z80 VDP PSG Testing needed
Atari 2600 🚧 In Development 6502 TIA TIA Rendering WIP
PC/DOS ⚠️ Experimental 8086-80386 CGA/EGA/VGA ❌ Basic support
SNES 🚧 In Development 65C816 PPU SPC700 No audio output
N64 🚧 In Development R4300i RDP/RSP ❌ Limited support

System Details

NES

Nintendo Entertainment System - Fully working with ~90% game coverage through 14 mapper implementations.

  • Architecture: NES README
  • Status: Production ready
  • Supported Formats: iNES (.nes)

Key Features:

  • Complete 6502 CPU from emu_core::cpu_6502
  • Full PPU emulation with background, sprites, scrolling
  • Complete APU with all 5 channels
  • 14 mappers covering ~90%+ of games
  • PAL/NTSC auto-detection

Game Boy

Game Boy / Game Boy Color - Fully functional with ~99% game coverage.

Key Features:

  • Complete LR35902 CPU
  • Full PPU with DMG and CGB modes
  • Complete APU with all 4 channels
  • MBC support: MBC0, MBC1, MBC2, MBC3, MBC5, HuC1
  • WRAM banking for GBC
  • Cartridge battery saves

CHIP-8

CHIP-8 / Super-CHIP / XO-CHIP / Mega-CHIP - Fully working with complete compatibility.

  • Architecture: CHIP-8 README
  • Status: Production ready
  • Supported Formats: .ch8, .sc8, .xo8, .mc8

Key Features:

  • Complete CHIP-8 VM implementation
  • Multiple display modes (64x32, 64x64, 128x64, 256x192)
  • XO-CHIP extended instruction set
  • Mega-CHIP high-resolution mode
  • Beep timer for audio

Sega Master System

Sega Master System - Functional with full hardware emulation, needs game testing.

  • Architecture: SMS README
  • Status: Functional
  • Supported Formats: .sms

Key Features:

  • Complete Z80 CPU
  • Full VDP implementation
  • Complete PSG (SN76489) audio
  • Cartridge banking support
  • Save state support

Atari 2600

Atari 2600 - In development with rendering issues.

Key Features:

  • Complete 6502/6507 CPU
  • TIA graphics (partial - rendering issues)
  • TIA audio (complete)
  • Multiple cartridge formats (2K-32K)
  • Banking schemes: F8, F6, F4, FE, E0, 3F

PC/DOS

IBM PC/XT - Experimental with CGA/EGA/VGA support.

  • Architecture: PC README
  • Status: Experimental
  • Supported Formats: .com, .exe

Key Features:

  • 8086/80186/80286/80386 CPU (16-bit complete, 32-bit in progress)
  • CGA, EGA, and VGA video adapters
  • Text and graphics modes
  • BIOS interrupt support
  • Disk image support (.img files)
  • .hemu configuration files for multi-disk setups

SNES

Super Nintendo Entertainment System - In development with graphics working but no audio output.

  • Architecture: SNES README
  • Status: In development
  • Supported Formats: .smc, .sfc

Key Features:

  • Complete 65C816 CPU
  • PPU modes 0-7 (modes 0-1 complete)
  • Complete SPC700 APU (no DSP)
  • LoROM support
  • Graphics working, silent gameplay

Nintendo 64

Nintendo 64 - In development with 3D rendering functionality.

Key Features:

  • Complete MIPS R4300i CPU
  • RDP 3D graphics processor
  • RSP (partial)
  • Basic 3D rendering
  • Byte-order auto-detection

Planning Documents

For developers interested in future system implementations: