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* '''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.
* '''Video Display Interface'''. The Video Display Interface chip is a custom IC designed to keep the Macintosh Portable 68HC000 CPU from having to refresh the screen (LCD display), thereby allowing the CPU to do more useful work.
 
==W==
* '''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.

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