8255 PPI Study Card


8255 PPI Study Card

8255 PPI Study Card

This study card for 8255 is designed to explain all the features of 8255 peripherals. Additionally, the board also features

  • Four 8-way dip switches to configure the 8255 Port lines in different modes of operation.
  • 8 RED, 8 GREEN, and 5 YELLOW LEDs are provided to read the status of port A, port B and port C lines respectively.
  • Switches S1, S2 & S3 are provided to stimulate STB* or ACK* signals in Mode 1 and Mode 2.


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