Lets set some initial requirements!

Hardware requirements

• Facilitate electrical connection to atari2600 game cartridge
• Push back the cartridges dust cover
• Supply 5V to the cartridge
• Communicate with cartridge using TTL compatible signal levels
• Communicate with software running on PC
• Access LED

Firmware requirements

The requirements for the firmware running on the microcontroller

• Communicate with software domain
• Read/write from/to any address in the atari2600's address space
• Control acces LED

Software requirements

The requirements for the software running on the PC

• Options
  • Bankswitching method
  • Output file path
• Communicate with firmware domain
• Save ROM image to file
• Launch emulator