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|Department of Microelectronic Systems, Faculty of Electronics, Telecommunications and Informatics, Gdansk University of Technology||
Prototype board has VGA port as shown in Fig. 1. This makes possible to generate signals driving a monitor. Colours are coded with 1 bit - so it is possible to display 8 colours including black and white. High logic level highlights the respective colour.
Fig. 1 Schematic diagram of VGA interface
Despite the colours, vertical and horizontal synchronization signals have to be generated. Timings of synchronization signals is shown in Fig. 2.
Fig. 2 Timing of synchronization signals