with the 2,780+ Game Boy, Game Boy Color & Game Boy Advance game cartridge. With all three of these PCB’s, I have considered the side with the components mounted as the front as it is the side that faces the side of the cartridge case with the label. Two orders: 125XXX Group B (black pocket) 126XXX Group C (game gear. Not sure if this is exactly the same as the final production version that Matthias is making, but its the same as the prototype and it works! MD EdgeĪs each system uses a different cartridge pin numbering scheme, I have made up a few images to help make it (hopefully) obvious for each one. Data should be stable during CLKLOW period throughout CLK rising edge.

Okay then, this is the pin-out for the Master System / Game Gear plug-in adapter. Chipselect High-to-Low transitions are invoking commands, which are transmitted through data lines during next following eight CLK pulses, after the command transmission, further CLK pulses are used to transfer data, the data transfer ends at chipselect Low-to-High transition.

Game gear cartridge pinout