FRAM Upgrade (Sega Mega CD) Updated Mar 15, 2026 · 8 min read · 0 viewing Log in or register to read the full article. Previous Game Save (Sega Mega CD) The game saves are stored in the Work RAM (MB8464A, IC16). This Work RAM is enabled by the CS2 pin, ... Next Region Free BIOS (Sega Mega CD) If you have a single specific BIOS, such as an EU region free then you can just install it in place ...