Retro Game Mechanics Explained

Mirroring & Open Bus - Super Nintendo Entertainment System Features Pt. 09b (2019x9)

Air date: Oct 02, 2019

If the SNES has 16 megabytes of addressable memory, why can a 1 megabyte ROM chip take up over half of the space? Why can the ROM image be accessed from more than one location? It's all explained right here.