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

Explain the term - rational rose and visio 2000 enterprise, Explain the ter...

Explain the term - Rational Rose and Visio 2000 Enterprise Rational Rose: IBM Rational RequisitePro is a powerful and easy-to-use tool for use case management and requirement

Demonstration of sorting problem, Q. Demonstration of sorting problem? ...

Q. Demonstration of sorting problem? The term sorting implies organising elements of a provided set of elements in a specific order i.e. descending order / ascending order / al

Determine about the intranet server, Determine about the Intranet server ...

Determine about the Intranet server The success or usage of the Intranet server is measured by the number of operations it handles per Unit time. The selection of a good server

Different types of layers in tcp/ip protocol stack, What are the different ...

What are the different types of layers in TCP/IP protocol stack? Layers into the TCP/IP protocol architecture are as given below: • Application Layer, • Host-to-Host Tra

Manipulate the presentation and attributes interactive list, How can you m...

How can you manipulate the presentation and attributes of interactive lists? ---Scrolling by Interactive Lists. ---Setting the Cursor from within the Program. ---Changing

Explain management information base variables, Explain MIB (Management Info...

Explain MIB (Management Information Base) variables. MIB is a set of named items which an SNMP agent knows. To control or monitor a remote computer, a manager should fetch or s

Design a simple digital clock., Use a timer interrupt to design a easy digi...

Use a timer interrupt to design a easy digital clock.  This clock will count only minutes and seconds, and start at 00:00 every time your program starts.  The show on the screen sh

State about CSMA/CA, State about CSMA/CA It belongs to a class of proto...

State about CSMA/CA It belongs to a class of protocols known as multiple access methods. CSMA/CA  stands  for:  Carrier  Sense  Multiple  Access  with  Collision Avoidance.  In

Program size for different instruction set approaches, Q. Program size for ...

Q. Program size for different Instruction Set Approaches? Assumptions: Complex Instruction is: Add C, A, B having 16 bit addresses and 8 bit data operands All opera

Task and parallel task, Task A logically discrete sector of a computati...

Task A logically discrete sector of a computational effort. A task is naturally a program or program-like set of instructions that is implemented by a processor.  Parallel

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