Name the modes of 8255 programmable peripheral interface, Computer Engineering

Assignment Help:

What are the different modes in that 8255 Programmable Peripheral Interface (PPI) can operate? 

  • 24 I/O lines in 3-8-bit port groups - A, B, C
  • A, B can be 8-bit input or output ports
  • C can serve as 2-4-bit input or output ports
  • 3 modes of operation:

- Mode 0: A, B, C simple input or output level sensitive ports

- Mode 1: A, B input or output ports with strobe control in C

- Mode 2: A is bidirectional with control/handshake in B and C

 


Related Discussions:- Name the modes of 8255 programmable peripheral interface

Registered ports, A) What does this file have? Where was the information in...

A) What does this file have? Where was the information in this file acquired from? What is the information in this file used for? B)  What is the range for popular ports? What i

Create a web page from which customers can order equipment, Q. Create a Web...

Q. Create a Web page from which customers can order equipment? Suppose your boss wants you to create a Web page from which customers can order computer equipment. You need to c

Digital electronics, design a ciruit which can work as a 4-bit binary adder...

design a ciruit which can work as a 4-bit binary adder as well as subtractor

What is device drivers, A device driver is software interface that manages ...

A device driver is software interface that manages communication with and control of a particular I/O device or type of device. It is task of device driver to convert logical reque

What is socket, A socket is one end-point of a two-way communication link a...

A socket is one end-point of a two-way communication link among two programs running on the network. Socket classes are used to show the connection among a client program and a ser

What is a switchboard, What is a switchboard A switchboard is only a f...

What is a switchboard A switchboard is only a form with command button that open other switchboard or perform tasks like opening forms and printing reports. Switchboard is a t

Disadvantages of edi(electronic data interchange), Disadvantages  1.  T...

Disadvantages  1.  The X12 standard is so large and general  2.  EDI communications negotiate a technical agreement to explain exactly what subset of EDI they will use

the email interface to submit/change bugs via email, You can search an upd...

You can search an updated README.mailif file in the contrib/ directory of your Bugzilla distribution that walks you by the setup.

Which is the best tool for monitoring weblogic server(wls8), WLS8 handles J...

WLS8 handles JMX but it uses weblogic execution of JMX server. It does not supports generalise sun javax API which can be used with any JVM. There are some patches available which

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd