🗃️ Amiga Knowledge Base
65,174 curated entries on demos, software, hardware and history of the Commodore Amiga
Dual Playfield
Dual Playfield is a specialized graphics display mode in Amiga computers that enables two independent scrolling layers to be rendered simultaneously using the custom chipset. This mode divides the available bitplanes into two separate playfields—typically three bitplanes each in standard resolution—allowing each layer to scroll horizontally and vertically at different speeds without CPU intervention. It was extensively utilized in games to create hardware-accelerated parallax scrolling effects, where the foreground playfield could utilize transparency to reveal the background layer. The Agnus and Denise chips automatically composite the layers, conserving memory and processor resources compared to software-based multi-layer rendering techniques.