Hardware interrupts - computer architecture, Computer Engineering

Assignment Help:

Hardware interrupts:

Hardware interrupts-from I/O devices, processor, memory Software interrupts-produced by a program.

Direct Memory Access (DMA)

 Interrupt or Polling driven I/O incurs considerable overhead

  • Saving program state
  • Incrementing memory addresses
  • Multiple program instructions
  • Keeping track of word count

Transfer  high  amounts  of  data  at  high  speed  without  continuous  intervention  by  the processor

DMA controller keeps track of memory locations, directly transfers to memory (using the bus)

independent of the processor

Special control circuit needed in the I/O device interface which is called a DMA controller

1840_Hardware interrupts.png


Related Discussions:- Hardware interrupts - computer architecture

Utilization summary, Utilization Summary The Utilization Summary shows ...

Utilization Summary The Utilization Summary shows the status of each processor i.e. how much time (in the form of percentage) have been spent by every processor in busy mode, o

What is a PCI bus and discuss its aspects and usage, What is a PCI bus? Dis...

What is a PCI bus? Discuss its aspects and usage. Peripheral Component Interconnect (PCI): This bus was developed by Intel and introduced in 1993. It is geared specifically to

Bubbling the pipeline - computer architecture, Bubbling the Pipeline: B...

Bubbling the Pipeline: Bubbling the pipeline (also known as a pipeline break or pipeline stall) is a technique for preventing, structural, data and branch hazards from taking p

Future trends of microcontrollers, Currently microcontrollers are embedded ...

Currently microcontrollers are embedded within most products, typical uses are in Camera's for auto focus and display drivers, Laser printers to compute fonts and control printing.

Device controllers, All components of computer communicate with processor b...

All components of computer communicate with processor by the system bus. Which means I/O devices required to be attached to system bus. But I/O devices aren't connected directly to

Unification algorithm - artificial intelligence, Unification Algorithm - Ar...

Unification Algorithm - Artificial intelligence: To merge two statements, we should get a substitution which forms the two sentences similar. Remember that we write V/T to sign

Hazard, how to calculate delay for hazard?

how to calculate delay for hazard?

Facsimile , FACSIMILE : This is often known as 'fax' and it represents the...

FACSIMILE : This is often known as 'fax' and it represents the interface between reprographic and computer technology. By using fax, the contents of a sheet of paper (text or illu

Data validation and data transfer, Data Validation condition: The following...

Data Validation condition: The following condition stated below must be met for a data to be valid as is shown in the figure 3a below. 1. The data on the SDA line must remain stabl

State the advantages of CMOS, State the advantages of CMOS. Ans. Su...

State the advantages of CMOS. Ans. Subsequent are the advantages of CMOS: Both n-channel and p-channel devices are fabricated on similar substrate. Low power di

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