Hey Everyone, 

For sale is a Sega Genesis PCB Test Cart PCB with included 42pin IC Socket. 

This larger form factor will allow you to put a socket on the cart and use this as a test cart before soldering the eprom onto an actual PCB. 

This also has the added benefit of not interfering with the dust cover on the Genesis due to its tall form factor! 

Please see all pics. Does not support battery backup features. 
Supports EPROM sizes:M27C322 (32 Mbit / 4MB) M27C160 (16 Mbit / 2MB)M27C800 (8 Mbit / 1MB)M27C400 (4 Mbit / 512KB)
Solder the respective jumper on the back of the PCB to select the ERPOM size. 

I ship fast. Thanks for looking.