Chip Preparation

1. Download the Arduino IDE (latest stable version from https://www.arduino.cc/en/Main/Software) and install it.
2. If you are targeting an ATtiny chip, download ATTinyCore from https://github.com/SpenceKonde/ATTinyCore, install it and make sure it shows up under Boards in your Arduino IDE.
3. Close the Arduino IDE.
4. Download the MegaDrivePlusPlus sketch and save it in a directory with the same name in your Arduino sketch folder.
5. Open the Arduino IDE.
6. Connect your chip as an ICSP target.
7. Set the following options in the Tools menu:
   • Board: ATtiny x4 Series
   • B.O.D.: B.O.D. Enabled (4.3v)
   • Clock: 8 MHz (Internal) BE VERY CAREFUL WITH THIS!
   • Chip: ATtiny84
   • Port: Choose whatever port you connected your programmer to.
8. Select Burn Bootloader from the Tools menu. Wait for the Done burning bootloader message to appear.
9. Select Open... from the File menu and open the MegaDrivePlusPlus sketch
10. Select Upload Using Programmer from the Sketch menu.

If no errors show up, your chip is ready!