If you are running a flash cart capable of playing Sega Master System ROMs, one connection needs to be added to provide full support for these games. This is a rather straightforward mod, but does require some precision in connecting to a delicate pin on the main ASIC. The original details on this mod are from RyuX.
Installation
- Disassemble the Nomad to gain access to the primary board.
- Optionally, use kapton tape to cover nearby pins to prevent accidentally soldering them, as they are small and delicate.
- Use flux and leaded solder to connect some thin high gauge (30AWG or even 32AWG) wire to pin 45 of the 315-5700 chip. The pins have dots indicating groups of five to help locate it.
- The other end of the wire will go to pin B30 of the cartridge connector. This pin is the harder-to-reach pin row. Be sure to lay out the wire as you want it to sit when the system is closed up, and snip it close to the pin.
- Test it out before fully reassembling the console so you can make any corrections as needed.
