| Agnus, Paula
and Denise along with the CIA twins are the custom
co-processors for the Original Chip Set.(OCS) They
are found in Amiga 1000,2000,500 & 600. Agnus 8272,(sometimes called FAT Lady)
is the custom graphics and animation co-processor. Later upgraded to use 1mb of graphics
memory 8275 (FAT Agnus), and for 2Mb (FATTER AGNUS).
Denise 8372 is the custom display processor. Sometimes known as
Denise-Halfbright. Upgraded later as Super-Denise 8374. The Super Denise
and Fat Agnus combination were known as the Enhanced Chip
Set.(ECS)
Paula is the custom sound co-processor. Virtually unchanged as she moved
from the OCS to ECS and later to AGA.
The CIA's are the Complex Interface Adapters and are custom control
processors, for OCS and ECS Amigas, and handle the ports and expansions of the early Amiga
family.
Alice replaced Agnus (Agnes) with AGA (Advanced Graphics
Arcitecture).
Buster replaced Gary for better control of the system
BUS.
Lisa replaced Denise and gave more colors and display
modes, under AGA.
Bridgett, was a custom ECS chip in the Amiga 3000, that handled the
expansion bridge.
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