The Copper
The Copper is a co-processor integrated into Agnus. It uses Chip RAM to control the graphic system, considerably easing the strain on the 68k processor. The co-processor can also intervene directly on controls of the other components. It is responsible for the management of the Blitter. One of the Amigas limitations is the Copper's use of just Chip RAM, restricting the display to just 2Mb. However, for its limitations it has contributed to creating part of the Amiga 'look and feel' providing the capability to drag a screen and show several screens at once.
Copper
Copper is short for co-processor. The Copper is a fast highly specialized microprocessor which show multiple screens at once and change graphics mode, color values, or sprite defintions within a defined location on the screen. Several actions can be displayed simultaneously without utilizing the main CPU processor.