Handling multiple devices - computer architecture, Computer Engineering

Assignment Help:

Handling Multiple Devices

Interrupt Priority

  •   Continue to accept interrupt requests from higher priority components
  •   Disable interrupts from component at the same level priority or lower
  •   At the time of execution of interrupt-service routine
  •   Privileged instructions executed in the supervisor mode

Controlling device requests

  •   Interrupt-enable

KEN, DEN

Implementation of interrupt priory by using individual interrupt-request and acknowledge lines

Polled interrupts: Priority decided by the order in which processor polls the component (polls their status registers) vectored interrupts: Priority determined by the order in which processor tells component toput its code on the address lines (order of connection in the chain)

801_Handling Multiple Devices.png

(a)   Daisy chain

Daisy chaining of INTA: If device has not requested any service, passes the INTA signal to next device if necessitate service, does not pass the INTA, puts its code on the address lines Polled

518_Handling Multiple Devices1.png

 


Related Discussions:- Handling multiple devices - computer architecture

Explain vector reduction instructions, Vector reduction Instructions Wh...

Vector reduction Instructions When operations on vector are being decreased to scalar items as a result then these are vector reduction instructions. These instructions are ref

Your worksheet and organizing the data, You presently work for an automotiv...

You presently work for an automotive parts supply store. Your company is growing, and is considering expansion. The company presently has three locations (North, South, and Central

What is assembler directive, What is assembler directive? SUM EQU 200 ...

What is assembler directive? SUM EQU 200 Assembler directives are not instructions that will be implemented. It easily informs the assembler that the name SUM should be chan

What are the benefits of web-based spreadsheets, What are the Benefits of W...

What are the Benefits of Web-Based Spreadsheets? The spreadsheets can be accessed from any Internet-connected computer, not just the computer originally formed the spreadsh

Where signalling transfer point exist, Signalling transfer point (STP) exis...

Signalling transfer point (STP) exist in (A) Strowger exchange                  (B)  SS7 (C)  Local area network                 (D)  PABX Ans: STP that is stand f

Write the factors considered in designing an i/o subsystem, Write the facto...

Write the factors considered in designing an I/O subsystem? 1.  Data Location: Device selection, address of data within device ( track, sector etc) 2.  Data transfer: Amount

Explain about bus of register transfer, Explain about Bus of register trans...

Explain about Bus of register transfer Since a computer has   several registers, paths must be provided to transfer information among registors. If separate lines are used amon

What is memory mapped i/o, What is memory mapped I/O? When the I/O devi...

What is memory mapped I/O? When the I/O devices share the similar address space, the arrangement is known as memory mapped I/O.

What is block started by symbol, What is BSS(Block Started by Symbol)? ...

What is BSS(Block Started by Symbol)? A data showing at the machine level, that has initial values when a program begins and tells about how much space the kernel assigns for t

Multithreaded architecture, Q. Multithreaded Architecture? It is clear ...

Q. Multithreaded Architecture? It is clear at the moment if we provide a lot of contexts to multiple threads then processors with numerous contexts are known as multithreaded s

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