DUAL PURPOSE VIDEO ADAPTER PORT

摘要

The present invention provides a method and apparatus for using a video port, such as a display data channel (DDC) port, in two modes for transmitting and receiving serial data streams. In one mode, the DDC port is used to control the operation of a video display of an information processing system, such as a personal internet communicator (PIC). In another mode, the DDC channel is used as a serial port for accessing the PIC system for diagnostic and configuration purposes.