The Cuda IC is a custom version of the Motorola MC68HC05 microcontroller. It provides several system functions, including
- the ADB interface
- management of system resets
- management of the real-time clock non/off control of the power supply (soft power)
- the programming interface to devices on the IIC (interintegrated circuit) bus
The devices on the IIC bus include the AWACS sound IC, the digital video decoder and scaler (DESC) on the video input module, and the Cyclops IC, which is the controller for the remote control receiver. The computer reads and writes status and control information to those devices by commands to the Cuda IC.