DevSter RS232 Bootloader (Public Domain) - Genesis - Utility

Sega Game Toshokan, meaning Sega Game Library, is a Sega Mega Drive cartridge distributed with select Mega Modems starting November 3rd 1990, with Putter Golf and Pyramid Magic Yokokuhen being the launch titles. With the Mega Modem connected, this cartridge in the cartridge slot, and a Sega Meganet subscription, consumers could download and play select Mega Drive games exclusively available through the service, which were released between 1990 and 1992.