Jordan University Of Science And Technology

Jordan University of Science and Technology

CPE 452 Microprocessor Interfacing Lab

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Lab 6: PPI 1. Objectives • Introduction to parallel data transmission. • To identify the role of the interfacing device, Programmable Peripheral Interface (PPI) for parallel data transfer.

2. Prerequisites • PCI bus manuals • PPI datasheet “Peripheral Programmable Interface 82C55A” • C/C++ programming language 3. Description • In this lab you are going to implement an application that interface PPI with PCI for data transfer. • The DIP switch and LEDs will be connected to PPI, and the PPI connected to PC through PCI. • The application that we will implement using the visual C++ is reading an 8-bit from the switches and making swap for it then writing the result to the LEDs.

4. Components, Devices, and Tools • 8-way DIP Switch. • Resistors: 8 (2.7KΩ) pull-up resistors for the DIP switch connection and 8 (330Ω) pull-down resistors for the LED’s connection. • 8- LED set. • PPI (8255) chip

Lab6-1

Jordan University of Science and Technology

CPE 452 Microprocessor Interfacing Lab

Lab 5: Simple I/O using PCI Local bus 5. Pre- Lab : You have to show the circuit you will build in your board and write simple code to implement the required.

Lab6-2