Macifom is a highly-accurate NES emulator and debugger written in Objective-C that leverages the latest Mac OS X APIs to provide excellent performance and usability.

Macifom is a highly-accurate NES emulator and debugger written in Objective-C that leverages the latest Mac OS X APIs to provide excellent performance and usability. The purpose of this project to facilitate new NES development on the Mac OS X platform while leveraging OS X technologies such as AppKit, OpenCL, CoreAudio, OpenGL and more!

The latest version of Macifom features:

Cycle-exact CPU (2A03) emulation for valid opcodes
Scanline-accurate PPU (2C02) emulation
Excellent sound reproduction care of Blargg's Nes_snd_emu library
Windowed and full-screen display modes
Support USB Gamepad and Joystick controls
Supports games designed for NROM, UxROM, CNROM, AxROM, SNROM, SUROM, TxROM, VRC1, VRC2a, VRC2b, and iNES #184 (Sunsoft) boards.
Automatic saving of cartridge SRAM to disk
A debugger featuring breakpoints, live disassembly of program code, reading and writing of memory locations, register display and step-through execution.