for playing 2-players master system games. Download instructions GGEXT_TO_DB9
Requirements:
1) GameGear EXT port desoldered from a non functioning game gear (it’s a pity to destroy a working one)
2) Gear-To-Gear Cable (for connecting 2 game gears together, we will use it to connect the adaptor to it, it will remain intact)
2) DB9 male connector
3) ribbon cable or wires
4) patience
Instructions:
Desolder with patience and carefully the ext port from game gear’s motherboard. Take extra caution, in my case I had 2 pins destroyed while trying to get it out of the board. Thankfully as we only need 7 pins I replaced them with the ones that were not going to be used.
Once it is removed, solder some wire or ribbon cable to the pins located at the back of it. Then solder the other ends to a DB9 male connector as following
|
GG EXT. PORT |
DB9 (MALE) |
FUNCTION |
|
1 |
3 |
LEFT |
|
2 |
4 |
RIGHT |
|
3 |
1 |
UP |
|
4 |
2 |
DOWN |
|
5 |
UNUSED |
|
|
6 |
6 |
BUTTON 1 |
|
7 |
7 |
|
|
8 |
8 |
GND |
|
9 |
9 |
BUTTON 2 |
|
10 |
UNUSED |
When ready, plug your gear-to-gear cable on your gamegear, on the other end plug the adaptor and finally plug a mastersystem or megadrive gamepad to the db9 port. Load a mastersytem game on your gamegear and have fun!
elefasgr 