* '''Valkyrie'''. The Valkyrie IC is a custom IC containing the logic for the video display. It includes the following functions: display memory controller, video CLUT (color lookup table), video DAC (digital-to-analog converter).
* '''Valkyrie-AR'''. The Valkyrie-AR IC is a custom IC containing the logic for the video display.
* '''Whitney'''. The Whitney IC is a custom IC that provides the interface between the system bus and the I/O bus that supports peripheral device controllers.