Chapter 2
COPROCESSOR HARDWARE
INTRODUCTION
The Copper is a general purpose coprocessor that resides in one of the Amiga's custom
chips. It retrieves is instructions via direct memory access (DMA). The Copper can control
nearly the entire graphics system, freeing the 68000 to execute program logic; it can also
directly affect the contents of most of the chip control registers. It is a very powerful tool
for directing mid-screen modifications in graphics displays and for directing the register
changes that must occur during the vertical blanking periods. Among other things, it can
control register updates, reposition sprites, change the color palette, update the audio
channels, and control the blitter.
- Coprocessor Hardware 13 -
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