Dma controllers - computer architecture, Computer Engineering

DMA controllers in computer system:

  •   DMA Controller
  •   Part of the I/O device interface
  •   DMA Channels
  •   Performs functions that in general would be performed by the processor
  •   Bus signals that control transfer
  •   Provides memory address
  •   Keeps track of number of transfers
  •   Under control of the processor

INTERFACE CIRCUITS

o   Provides a storage buffer for at least one word of data.

o   Circuitry required connecting an I/O device to a computer bus

o   Contains address-decoding circuitry

o   Contains status flag that can be accessed by the processor.

o   Generates the appropriate timing signals required by the bus control scheme.

o   Performs format conversions

o   Ports

o  Parallel port

o  Serial port

Keyboard to processor connection

8_DMA controllers.png

 

Posted Date: 10/13/2012 7:27:06 AM | Location : United States







Related Discussions:- Dma controllers - computer architecture, Assignment Help, Ask Question on Dma controllers - computer architecture, Get Answer, Expert's Help, Dma controllers - computer architecture Discussions

Write discussion on Dma controllers - computer architecture
Your posts are moderated
Related Questions
What is the significance of Technical settings (specified while creating a table in the data dictionary)?  By specifying technical settings we can handle how database tables ar

Assembly language: An assembly program has a series of instructions--mnemonics that relate to a stream of executable instructions, when translated by an assembler that may be

What is meant by a priority encoder? Ans: Priority encoder- Basically an encoder is a combinational circuit which performs the inverse operation of a decoder. The input c

what is java?

Signaling - Universal Serial Bus: USB supports following signaling rates: o   A low speed rate of 1.5 Mbit/s is defined by USB 1.0. This is so much similar to "full speed"

en a five station token bus LAN with station addresses of 3000, 500, 100, 70, and 50. Stations with addresses of 5000, 4000, 400, 90, and 60 are waiting to enter the ring. Assume a

How do I update an existing copy of the source to the current version? Ans) As the common code changes, you might need to update your copy to have the lastest version. To do tha

SET SCREEN With SET SCREEN the present screen simply specifies the next screen in the chain , control branches to this next screen  as soon as the current screen has been proce

How future climate/environment changes can be predicted -  Information over time is fed into a weather/climate model -  based on changes in weather patterns, carries out a s

In this part you are required to develop the website that you designed in Your written report must describe any changes that you make to theoriginal plan with justification.