Retro Game Console With ATMEGA644

This is a retro-minimalist open source video game console design. It is based on an AVR 8-bit general-purpose microcontroller made by Atmel. It based on the Uzebox project.

Features:

 -   Low parts count and cost: The system is made of only two chips and discrete components.
 -   Interrupt-driven kernel: No cycle counting required, sound mixing and video generation are all made in the background.
 -   256 simultaneous colors: Accomplished by using a R-2R resistor ladder DAC.
 -   4 channels sound engine: The sound subsystem is composed of 3 wavetable channels and 1 noise or PCM channel.
 -   MIDI In: With a music sequencer, allows the creation of music directly on the console.
 -   Retro controllers: The joypad inputs uses standard NES/SNES controllers interface.
 -   SNES Mouse Support.
 -   SD/MicroSD card interface.
 -   Expandable: I/O lines and peripherals are still available, like the UART and SPI port for one to experiment.
 -   breadboard area for own hardware extensions
 -   Gameloader (beta): Load and flash games stored on SD cards.
 -   API: Develop games using an API that provides multiple video modes, sound driver and more.
 -   Open source: The software and hardware design are totally free and licensed under the GPL.
 -   more as 80 free games and demos available

A detailed construction manual, DIY kits and circuit diagrams are also available here.