This guide will show you how to install the in-game-reset mod from Borti4938 into a Sega Mega Drive.
Installing this In-Game-Reset chip is very straight forward. No trace cuts are required. Just stick down the chip and make the connections and it should be working. Avoid running wire over the cartridge port area,
This In-Game-Reset chip will work with any switchless modded Mega Drive, however it is best paired with the switchless region mod by Borti4938 which is used with the switchless region mod kits sold here.
Connect this to a +5V pad on the region jumpers.
Connect Pin 2 to either +5V or leave it with No Connection (N.C)
When No Connection (Not Active)
When +5V Connection (Active)
You can bridge Pins 1 and 2 together with solder at the chip to activate this mode.
Need soldering to Controller Port 1
Connected to:
When this is connected the game will pause when START+A+B+C is held long enough to start cycling through the console’s regions. Only connect this if you want the game to pause when
cycling through the regions. CPU Halt only works when MODE SET is Active / connected to +5V.
This pin has to be connected to the reset button. This can be connected to the Reset Button pin on the board or if you have a switchless region mod installed, ‘PIN 13 - RESET BUTTON (IN)’ of the switchless region mod chip. Connecting to either is functionally the same.
The same applies to all other matching pins of a switchless region mod chip and the IGR mod chip. Power, Ground, Reset Button.
Connect this to a Ground pad on the region jumpers.